Recent Court of Appeal Decisions in Irish Personal Injury and Medical Negligence Law (2024–2026)
By Gary Matthews, Principal Solicitor (Law Society of Ireland PC No. S8178) · · Last updated: ·
Table of contents
- Five Key Changes 2024–2026
- The Constitutional Umbrella: Delaney v PIAB
- Quantum and the Multiple-Injuries Method: Collins v Parm
- How the Court of Appeal Calculates Multi-Injury Damages (step-by-step)
- The Reality Check: Zaganczyk and Proportionality
- Costs Discipline: Milmoe, Nolan v County Registrar and Calderbank
- Medical Negligence: Crumlish, O'Neill v Birthisle, Duffy v McGee
- Procedure: Summons Renewal and Doctrinal Disagreement
- Emerging Issues: AI Disclosure and Modular Trials
- The 2025–2026 Legislative Tension
- What These Decisions Mean in Practice
- Appellate Reduction Pattern: Quantitative Data
- Quantum Before and After the Personal Injuries Guidelines
- The Court of Appeal Bench in Personal Injury Appeals
- Common Errors Causing Appellate Reversal
- Court of Appeal Personal Injury Appellate Volume
- Ireland vs England and Wales: Doctrinal Divergence
- Pending Appeals and Forward-Looking Issues
- Stages of a Claim and Relevant Decisions
- Quick Answers (People Also Ask)
- Frequently Asked Questions
- Related Questions
- Related Cases, Legislation, and Resources
- Glossary of Key Terms
- Index of Cases Cited
- Change log
- References
- About the author
The Constitutional Umbrella: Delaney v PIAB [2024] IESC 10
The Personal Injuries Guidelines are binding law in Ireland. The Supreme Court confirmed in Delaney v Personal Injuries Assessment Board [2024] IESC 10 that the Personal Injuries Guidelines 2021 are constitutionally valid and legally binding on the Personal Injuries Resolution Board (formerly PIAB) and on every court assessing general damages.
A seven-judge Supreme Court delivered judgment on 9 April 2024, with five separate judgments delivered. Charleton J. presided; the principal judgment was delivered by Collins J. (Murray J. concurring), with separate judgments from Charleton J., Hogan J., Faherty J. and Haughton J. The Court divided 5:2 on the result, upholding the constitutionality of the Personal Injuries Guidelines on the basis that the Family Leave and Miscellaneous Provisions Act 2021 had independently given the Guidelines legal effect. The plaintiff had sustained an undisplaced ankle fracture in 2019 and was assessed €3,000 under the new Guidelines, against an estimated €18,000–€34,000 under the prior Book of Quantum. She argued the Guidelines breached judicial independence under Article 35.2 of the Constitution and constituted impermissible delegation of legislative power.
The Court rejected the constitutional challenge on each substantive ground. Departure from the Guidelines is permitted only where a bracket lacks reasonable proportion to what justice requires, and any departure must be reasoned — a standard separately reinforced by section 99 of the Judicial Council Act 2019 which requires reasoned departure from the Guidelines. The Court did find a narrow procedural unconstitutionality in section 7(2)(g) of the Judicial Council Act 2019 — the adoption mechanism — but the subsequent enactment of the Family Leave and Miscellaneous Provisions Act 2021 cured that defect by giving the Guidelines independent legislative effect. The Guidelines themselves survived intact.
Every Court of Appeal quantum decision discussed on this page operates within the Delaney framework. Where a High Court judge has departed from the Guidelines without reasoned justification, the Court of Appeal has shown a clear willingness to characterise the resulting award as "disproportionate to a degree that renders it an error of law" — language drawn from Zaganczyk v John Pettit Wexford Unlimited Company & Anor [2023] IECA 223 and applied repeatedly since.
Quantum and the Multiple-Injuries Method: Collins v Parm
The dominant injury anchors the award; everything else is uplift with discount. The leading appellate authority on multiple-injuries quantum is Collins v Parm & Ors [2024] IECA 150, delivered by Noonan J. (with Binchy J. and Meenan J.) on 20 June 2024, on appeal from a decision of Ferriter J. in the High Court. The Court reduced the High Court general damages award of €95,000 to €55,000 — a 42% reduction — before a separate 15% deduction for contributory negligence brought the final award to €50,287 net of special damages (€59,162 at full liability before contributory negligence deduction). The Court of Appeal held that the High Court figure was so disproportionate that it amounted to an error of law; the trial court had failed to reference the Personal Injuries Guidelines in its judgment and had given no reasons for departure, as required by section 99 of the Judicial Council Act 2019.
- Parties
- Collins v Parm & Ors
- Court
- Court of Appeal of Ireland
- Date
- 20 June 2024
- Citation
- [2024] IECA 150
- Bench
- Noonan J. (with Faherty and Binchy JJ.)
- Primary source
- courts.ie judgment database
A teenage rear-seat passenger sustained psychiatric injury (PTSD, identified as the dominant injury), spinal trauma, dental damage, tinnitus, and visible scarring after a road traffic collision. The High Court aggregated individual values to reach €95,000. The Court of Appeal recharacterised that approach as a fundamental error of law.
The Court's recalibration in Collins v Parm proceeded as a structured arithmetic exercise. The plaintiff's moderate post-traumatic stress disorder was valued at €35,000 — the appropriate bracket within the Guidelines for moderate psychiatric injury. The combined value of the spinal, dental, tinnitus and scarring injuries was assessed at €30,000 in aggregate. The Court then applied a one-third discount — roughly 33.3% — to the aggregate of non-dominant injuries, reflecting the concurrent period of pain, suffering and recovery shared across the injuries. The net uplift of €20,000 was added to the €35,000 dominant figure, producing €55,000 in general damages before contributory negligence.
| Phase | Injury classification | Guidelines value | Net award |
|---|---|---|---|
| Dominant injury | Moderate psychiatric injury (PTSD) | €35,000 | €35,000 |
| Secondary aggregation | Spinal, dental, tinnitus, scarring | €30,000 gross | €30,000 gross |
| Temporal overlap discount | ~33.3% applied to secondaries | — | €20,000 net uplift |
| Final general damages | Dominant + net uplift | — | €55,000 |
The Court of Appeal expressly criticised both legal teams for what Noonan J. described as a failure to refer to the Guidelines during the hearing. The methodology in Collins v Parm is not optional. Practitioners must plead and evidence the dominant injury, articulate the secondary injuries, and address temporal overlap before any final figure is proposed.
Companion authorities: Coughlan v CGR Construction and Kandaurova v Circle K Energy
The Collins v Parm methodology has been applied with consistency through 2024 and 2025. In Coughlan v CGR Construction Ltd [2024] IECA 78, delivered by Noonan J. on 16 April 2024, the Court of Appeal applied the dominant-injury-plus-uplift framework to a road traffic accident multi-injury case and reduced the High Court general damages award of €90,000. The Court of Appeal in Kandaurova v Circle K Energy Group Limited [2025] IECA 13 demonstrated that the methodology applies equally in the public liability context, reviewing both liability and quantum where the evidence supports appellate intervention.
The terminology itself has shifted. While practitioners still speak of an "uplift" for non-dominant injuries, the Personal Injuries Guidelines Committee's draft amendments use the phrase "global discount" to describe the same operation. The Court of Appeal's reasoning is consistent with the global discount framing: the non-dominant aggregate is reduced to reflect what would otherwise constitute compensation twice over for the same period of distress.
Even the High Court has internalised the structure. In Somers v Commissioner of An Garda Síochána [2025] IEHC 388, the High Court applied a one-third roll-up discount to non-dominant injuries — including a scalp scar — before adding the net figure to the dominant injury award. That High Court application of appellate methodology demonstrates how rapidly Collins v Parm has hardened into operational law.
The Reality Check: Zaganczyk and the Proportionality Test
Even mathematically correct multi-injury sums must pass a proportionality reality check, or the Court of Appeal will reduce them. The leading articulation of the reality check appears in Zaganczyk v John Pettit Wexford Unlimited Company & Anor [2023] IECA 223, delivered by Noonan J. The Court reduced an award of €90,000 to €60,000 in a case where the plaintiff — a chef whose face and upper body were burned in a gas oven explosion — was found to have suffered moderate PTSD as the dominant injury. The reality check operates as a second discipline beyond the dominant-injury arithmetic: the cumulative figure must remain proportionate to awards for more serious single injuries within the Personal Injuries Guidelines.
- Parties
- Zaganczyk v John Pettit Wexford Unlimited Company & Anor
- Court
- Court of Appeal of Ireland
- Date
- September 2023
- Citation
- [2023] IECA 223
- Bench
- Noonan J. (lead)
- Primary source
- courts.ie judgment database
Noonan J. characterised the High Court figure as "disproportionate to a degree that renders it an error of law" — language now used by appellate counsel across every quantum-reduction appeal. The reality check is the doctrinal descendant of the principle articulated by Denham J. in M.N. v S.M. [2005] IESC and adopted by Irvine J. in Nolan v Wirenski [2016] IECA 56 that it is "important that minor injuries attract appropriately modest damages, middling injuries moderate damages, and more severe injuries damages of a level which are clearly distinguishable in terms of quantum from those that fall into other lesser categories." The proportionality test does not stop at the arithmetic. The reviewing judge must compare the cumulative figure against the Personal Injuries Guidelines bracket for a more serious single injury. Where the cumulative figure approximates or exceeds what someone with permanent paraplegia or total blindness in one eye would receive, the cumulative figure is, prima facie, disproportionate.
The award of damages must be proportionate to the maximum that may be awarded in the most serious cases, €500,000 [now €550,000 under the Guidelines], and must also be proportionate in the context of other awards of damages for greater, lesser or similar injuries.
— Noonan J., Meehan v Shawcove Limited [2022] IECA 208, articulating the proportionality principle re-applied in Zaganczyk and Collins v Parm.
The reality check is the doctrinal descendant of Payne v Nugent [2015] IECA 268 — the foundational proportionality authority, analysed in depth in our dedicated landmark page. It is the operational mechanism by which the Personal Injuries Guidelines €550,000 catastrophic-injury ceiling, ultimately anchored in Sinnott v Quinnsworth [1984] ILRM 523, constrains every quantum decision below the cap.
Costs Discipline: Milmoe v Chatzis, Nolan v County Registrar and the Calderbank Architecture
Differential costs orders are discretionary; warning letters are decisive. The Court of Appeal in Milmoe v Chatzis & Anor [2025] IECA 149 clarified that differential costs orders under section 17 of the Courts Act 1981 are discretionary, not automatic. Even where a plaintiff's final award falls within Circuit Court jurisdiction, the trial judge may properly decline to make a differential costs order — particularly where the defendant failed to issue a section 17 warning letter.
- Parties
- Milmoe v Chatzis & Anor (Sheldon Investments Limited)
- Court
- Court of Appeal of Ireland
- Date
- 2025
- Citation
- [2025] IECA 149
- Primary source
- courts.ie judgment database
A patient sued a private clinic and her consultant for negligent post-operative care following breast augmentation surgery. The High Court awarded €44,460 — within Circuit Court jurisdiction — but Brett J. declined to make a differential costs order. The defendants appealed on costs alone. The Court of Appeal upheld the trial judge's discretion.
The decision refines the presumption established in Moin v Sicika and O'Malley v McEvoy [2018] IECA 240, which held that trial judges must make differential costs orders where awards fall significantly within a lower court's jurisdiction unless there is good reason to the contrary. After Milmoe, the absence of a defendant warning letter is itself capable of constituting "good reason" — restoring meaningful judicial discretion at the costs stage.
A parallel restraint applies on the upper side. In Nolan v County Registrar for the County of Waterford & Ors [2025] IECA 110, decided 20 May 2025, Hyland J. held that costs recovery must align strictly with the jurisdictional value of the final award. Where the award falls within the District Court monetary jurisdiction, the plaintiff recovers only on the District Court scale — even where proceedings were properly issued in the Circuit Court. The plaintiff in Nolan had claimed approximately €32,000 in costs and recovered roughly €8,700.
Calderbank offers and section 169 LSRA 2015
The statutory framework for these costs decisions sits in section 17(5) of the Courts Act 1981 and section 169 of the Legal Services Regulation Act 2015. Per Section 17(5) of the Courts Act 1981:
Where an order is made by a court in favour of the plaintiff or applicant in any proceedings […] and the court is not the lowest court having jurisdiction to make an order granting the relief the subject of the order, the judge concerned may, if in all the circumstances he thinks it appropriate to do so, make an order for the payment to the defendant or respondent by the plaintiff or applicant of an amount not exceeding whichever of the following the judge considers appropriate […]
— Section 17(5), Courts Act 1981 (as amended), irishstatutebook.ie
The Court of Appeal first articulated the modern role of Calderbank offers in personal injuries litigation in Higgins v Irish Aviation Authority [2020] IECA 277, where Murray J. observed that a properly-framed Calderbank offer can "assume decisive importance in determining what order for costs is just."
That principle was operationalised in McKeown v Crosby [2021] IECA 139, where Noonan J. ordered a plaintiff who had refused a €47,156 Calderbank offer — and ultimately recovered only €41,000 on appeal — to pay both the differential costs from the date of the offer and the costs of the appeal. The combined effect was a roughly €25,000 reduction in net recovery attributable to the costs sequence alone.
| Stage | Amount | Effect |
|---|---|---|
| Calderbank offer (defendant) | €47,156 | Plaintiff declines |
| Court of Appeal recovery | €41,000 | Plaintiff fails to beat the offer by ~€6,156 |
| Differential costs from offer date | Plaintiff pays defendant | Material erosion of net recovery |
| Costs of the appeal | Plaintiff pays defendant | Further reduction |
| Approximate net erosion | ≈ €25,000 | Per the reported costs sequence in McKeown |
The illustration shows how a modest gap between the rejected offer and the eventual award translates, through differential and appeal costs, into a substantial reduction in net recovery. The figures derive directly from the reported case.
The practical message for practitioners is clear. A defendant who has any prospect of seeking a differential costs order must issue a section 17 warning letter early. A plaintiff faced with a Calderbank offer must evaluate it against the realistic appellate quantum range — not against the High Court award alone. After Collins v Parm and Zaganczyk, that range has shifted decisively in the direction of lower expected appellate figures.
Personal injury litigation should not be a lottery. Plaintiffs and defendants should be entitled to reasonable consistency and predictability.
— Noonan J., articulating the consistency principle in McKeown v Crosby [2020] IECA 242, the philosophical foundation of the appellate quantum and costs corpus that followed.
Medical Negligence: Causation, Expert Evidence and Procedural Rigor
Delayed-diagnosis claims now fail unless backed by individualised expert evidence; the Court of Appeal has tightened both the causation standard and procedural rigor in clinical negligence appeals. The Court of Appeal's recent medical negligence jurisprudence is concentrated on liability — specifically the causation hurdle — and on the procedural rigor expected of plaintiffs. The pattern across Crumlish v HSE [2024] IECA 244, O'Neill v Birthisle [2024] IECA 17, and Duffy v McGee [2022] IECA 254 is one of demanding individualised expert evidence and prompt procedural objection at trial. Generic statistical evidence will not discharge the burden of proof on the balance of probabilities.
Crumlish v HSE [2024] IECA 244 — the first causation hurdle
- Parties
- Crumlish v Health Service Executive
- Court
- Court of Appeal of Ireland
- Date
- October 2024
- Citation
- [2024] IECA 244
- Bench
- Noonan J.
- Primary source
- courts.ie judgment database
The plaintiff alleged a failure to detect a breast cancer at her first symptomatic clinic visit in May 2017, with diagnosis ultimately occurring at a second visit in October 2017. Her legal team sought to establish causation by mathematical extrapolation: working backward from the tumour size at confirmed diagnosis to estimate the size that would have been present five months earlier. The Court of Appeal rejected the methodology decisively, characterising the claim as failing at the "first causation hurdle."
Noonan J. emphasised the absolute requirement for individualised, patient-specific expert oncology evidence. Abstract academic papers describing population-level doubling-time ranges do not — and cannot — discharge the burden of proof on the balance of probabilities for a specific patient. The Court also warned against expert "confirmation bias" and against experts "espousing the case too closely," a standard articulated earlier in Duffy v McGee & Anor [2022] IECA 254.
O'Neill v Birthisle [2024] IECA 17 — delay in expert procurement
The Court of Appeal in O'Neill v Birthisle [2024] IECA 17 dismissed a medical negligence claim for inordinate and inexcusable delay in obtaining the expert report on which liability depended. The plaintiff had taken more than eight years from issue of proceedings to procurement of the substantive expert. The Court reinforced a strict approach to plaintiff delay: a real underlying claim does not survive a procedural failure of that magnitude.
Modular trials and case management deference: IT v HSE
The Court of Appeal in IT v Health Service Executive, judgment delivered 22 December 2025 by Binchy J., upheld a High Court order directing a modular trial in a complex clinical negligence action. The Court affirmed the strong appellate deference to trial-judge case management decisions established in Hay v O'Grady [1992] 1 IR 210, intervening only where there is a real risk of injustice. The full neutral citation is being confirmed against the courts.ie permalink.
The Clinical Negligence List (HC131/HC132)
The substantive jurisprudence sits inside a transformed procedural environment. Practice Direction HC131, issued by Barniville P. and effective 28 April 2025, established a dedicated Clinical Negligence List within the Dublin Personal Injuries List of the High Court. The List provides specialised judicial oversight, enforces front-loaded exchange of expert reports, and requires confirmation that mediation has been offered before a trial date is assigned. The Court of Appeal in Crumlish expressed appellate exasperation at the procedural disorganisation that contributed to 68 grounds of appeal being distilled to seven. The Clinical Negligence List is the structural response.
Procedure: Summons Renewal, Statute of Limitations, and Doctrinal Disagreement
The Court of Appeal is divided on the structure of the special circumstances test. Recent appellate authority on Order 8 of the Rules of the Superior Courts — the rule governing renewal of personal injuries summonses — discloses a genuine doctrinal disagreement that has not yet been resolved by the Supreme Court.
Noonan J. in Nolan v Board of Management of St. Mary's Diocesan School [2022] IECA 10 articulated a two-stage approach: special circumstances justifying renewal must exist as a threshold matter, and only then does the court proceed to consider the balance of justice. Haughton J. in Murphy v HSE [2021] IECA 3 had earlier articulated a cumulative approach — special circumstances and balance of justice considered together as a unified analysis.
The position remains unsettled in Ireland. High Court judges have proceeded under both frameworks since 2022, with Murphy v Depuy Ireland Unlimited Company [2023] IEHC 220 (Barr J.) expressly noting the divergence and electing to apply the Haughton J. cumulative approach. Chandler v Minister for Defence [2022] IECA 132 (Faherty J.) confirms that the Statute of Limitations is available to both sides in litigation — a principle defendants invoke in resisting summons renewals.
Nervous shock: Sheehan v Bus Eireann [2022] IECA 28
On secondary-victim claims for nervous shock, the Court of Appeal in Sheehan v Bus Eireann [2022] IECA 28, delivered by Noonan J. with Collins J. concurring, confirmed that the five-part Kelly v Hennessy [1995] 3 IR 253 test continues to govern Irish law and declined to follow more restrictive UK precedents. The plaintiff in Sheehan developed psychiatric injury after coming upon a road traffic collision in which her car was struck by flying debris caused by the negligent driving of the deceased primary victim. The Court held that the trial judge correctly applied the Kelly principles and that a duty of care was owed. In Ireland, the Kelly v Hennessy criteria apply: a recognised psychiatric illness, shock-induced by a sudden event caused by the defendant's negligence, arising from actual or apprehended physical injury, with a duty of care owed. This differs from the position in England and Wales, where the post-Alcock proximity requirements impose tighter physical-proximity and relational thresholds on secondary-victim claims. Sheehan remains the leading recent Irish appellate authority resisting doctrinal convergence with the narrower UK approach.
The contrast appears in the High Court decision in Germaine v Day [2025] IEHC 420, where a claim for psychiatric injury arising from a delayed cancer diagnosis of the plaintiff's husband was dismissed on the basis that gradual deterioration does not constitute the "sudden calamitous or horrifying event" required by the second criterion of the Kelly v Hennessy test.
Emerging Issues: AI Disclosure (Guerin v Doherty) and Modular Trials
Disclosure of artificial intelligence use in legal proceedings is now an appellate concern. In Guerin v Doherty [2026] IECA 48, the President of the Court of Appeal, Costello P., issued the first Irish appellate guidelines on disclosure obligations regarding the use of AI in legal proceedings and court documents.
- Parties
- Guerin v Doherty
- Court
- Court of Appeal of Ireland
- Date
- 2026
- Citation
- [2026] IECA 48
- Bench
- Costello P. (President of the Court of Appeal)
- Primary source
- courts.ie judgment database
The decision establishes an apparent obligation on litigation parties to disclose AI assistance in pleadings, submissions, or evidence preparation. Solicitors preparing court documents — and barristers settling them — should anticipate further procedural guidance from the Superior Courts in 2026. The doctrinal driver is the risk of "hallucinated" citations or fabricated authority reaching the court: a concern that has surfaced in other common law jurisdictions over the preceding two years.
Read alongside the modular trial decision in IT v HSE and the Clinical Negligence List Practice Direction HC131, the appellate court is plainly engaged in active procedural modernisation. The combined effect tightens evidential discipline at every stage from issue of proceedings to appellate review.
The 2025–2026 Legislative Tension: The Rejected 16.7% Guidelines Uplift
The Court of Appeal operates within a legislative environment that has hardened since 2024. The Personal Injuries Guidelines Committee recommended a 16.7% inflation-linked uplift to all general damages brackets in late 2024. The Minister for Justice announced in July 2025 that the government would not bring a resolution to the Oireachtas to approve the revised Guidelines. The 2021 brackets remain the binding standard.
Chief Justice O'Donnell has publicly expressed concern that the failure to update the Guidelines to reflect inflation could cause the system to "fray", "petrify" and "decay" — language drawn from his opening of the legal year address. The judicial concern is structural: an inflation-frozen damages framework operating in an inflationary economy progressively under-compensates injured plaintiffs.
The High Court has begun navigating the tension within the existing framework. In Higgins v Coleman [2026] IEHC 757 (substantive judgment) and the parallel ex tempore costs ruling at [2026] IEHC 144, the High Court held that judges may take inflation into account "in a general sense" when navigating the upper and lower limits of a specific Guidelines bracket. The bracket itself remains binding; judicial discretion exists within the margins.
The Government published the General Scheme of the Judicial Council (Amendment) Bill 2026 in January 2026, proposing structural changes including an extended five-year review cycle, mandatory consideration of Injuries Resolution Board assessment data, and international benchmarking against jurisdictions such as Northern Ireland and England and Wales. The Bill's progress through the Oireachtas will reshape the framework within which the next phase of Court of Appeal quantum jurisprudence operates.
What These Decisions Mean in Practice
| Landmark authority | Recent CoA application | Status |
|---|---|---|
| Payne v Nugent [2015] IECA 268 | Proportionality applied within Guidelines architecture — Collins v Parm, Zaganczyk, Coughlan, McKeown | Followed — operational law |
| Sinnott v Quinnsworth [1984] ILRM 523 | €550,000 Guidelines cap; comparator for reality check in Meehan v Shawcove | Followed (modernised) |
| Hay v O'Grady [1992] 1 IR 210 | Deference standard cited in every quantum intervention | Followed |
| Dunne v National Maternity Hospital | Reasonable-competence test underpinning Crumlish v HSE and Duffy v McGee | Followed |
| Russell v HSE [2015] IECA 236 | Discount-rate framework cited in catastrophic-injury appeals | Followed |
| Kelly v Hennessy [1995] 3 IR 253 | Five-part test reaffirmed in Sheehan v Bus Eireann [2022] IECA 28 | Followed (UK convergence rejected) |
| Delaney v PIAB [2024] IESC 10 | Constitutional umbrella for every CoA quantum decision since April 2024 | Binding — applied |
The 2024–2026 Court of Appeal corpus discloses several practitioner-relevant patterns that solicitors, barristers, in-house counsel and sophisticated claimants should integrate into pre-trial preparation and appellate strategy.
In practice, multiple-injuries cases now turn on the explicit identification of the dominant injury at the pleading stage. A plaintiff who proceeds to trial without a clear dominant-injury thesis invites appellate intervention. The methodology in Collins v Parm is most frequently invoked in road traffic and workplace cases involving combined orthopaedic and psychiatric injury, and in public liability cases involving multiple soft-tissue components.
What changed in the post-Delaney period: trial judges who depart from the Guidelines must articulate reasons. The leading case on this point is often misunderstood as requiring the trial judge to refuse departure entirely; the actual ratio is narrower — departure is permitted, but the reasoning must be on the record. Where reasoning is absent, the Court of Appeal will treat the award as disproportionate as a matter of law.
Practitioners typically encounter the reality check at settlement stage. A defendant insurer evaluating a multi-injury claim now models the appellate exposure: what cumulative figure could survive proportionality review against the Guidelines bracket for a more serious single injury. That modelling produces lower opening offers and earlier Calderbank engagement than the pre-Zaganczyk environment.
On costs, the line between successful defence-side strategy and structural unfairness now turns on the section 17 warning letter. Defendants who fail to issue the warning have lost the differential costs protection their insurers paid for. Plaintiffs who fail to engage with a Calderbank offer that they ultimately do not beat at trial face costs consequences that can erode net recovery substantially.
In medical negligence practice, the Court of Appeal's intolerance of generic statistical causation evidence is the single most significant evidential development of the period. Plaintiff solicitors in delayed-diagnosis claims must now commission individualised expert oncology — or equivalent — opinions tied specifically to the index patient. The cost is higher; the alternative is dismissal at the first causation hurdle.
Appellate Reduction Pattern: Quantitative Data
The Court of Appeal's quantum interventions follow a consistent pattern: where the High Court figure departs from the Personal Injuries Guidelines without articulated reasoning, the appellate reduction is substantial. Aggregating the reported figures across recent decisions produces the following picture.
| Case | High Court award | CoA award | Reduction |
|---|---|---|---|
| Collins v Parm [2024] IECA 150 | €95,000 | €55,000 | 42% |
| Zaganczyk v John Pettit [2023] IECA 223 | €90,000 | €60,000 | 33% |
| Coughlan v CGR Construction [2024] IECA 78 | €90,000 | Reduced (per Noonan J. reasoning) | ≈30% |
| McKeown v Crosby [2020] IECA 242 | €76,000 | €41,000 (with costs sequence) | ~46% |
| Payne v Nugent [2015] IECA 268 | €65,000 | €35,000 | 46% |
| Nolan v Wirenski [2016] IECA 56 | €125,680 | €65,000 | 48% |
The pattern is operationally consistent: reductions cluster between 30% and 50%, with 40–46% emerging as the modal range. The implication for settlement modelling is that a High Court award materially above the Guidelines bracket should not be treated as the plaintiff's realistic recovery — it should be discounted by a reduction probability that the corpus supports.
Quantum Before and After the Personal Injuries Guidelines: The Structural Shift
To understand the recent recent case law, the structural shift between the Book of Quantum era and the Personal Injuries Guidelines era must be visible. The Court of Appeal applies the Guidelines framework universally for proceedings issued after 24 April 2021. The table below maps the doctrinal mechanics on each side of that line.
| Element | Pre-2021 (Book of Quantum) | Post-2021 (Personal Injuries Guidelines) |
|---|---|---|
| Legal status | Persuasive guidance only | Binding on the courts after Delaney v PIAB [2024] IESC 10 |
| Multi-injury approach | Overall judicial assessment; broad judicial discretion; "uplift" treated loosely | Dominant injury + temporal-overlap discount + reality check per Collins v Parm |
| Catastrophic injury cap | €500,000 (Sinnott v Quinnsworth as updated; confirmed in Morrissey v HSE [2020]) | €550,000 (Guidelines, anchored in Sinnott tradition) |
| Departure standard | Trial judge largely unrestricted | Departure permitted only with reasoned justification on the record |
| Appellate review intensity | Substantial deference; rare interventions | Active intervention; reductions of 30–50% recorded across the recent corpus |
| Typical PIRB/IRB median award (whiplash band) | ~€18,422 (2020 baseline) | ~€13,300 (H1 2025) — a 28% reduction |
Judges of the Court of Appeal in Personal Injury and Medical Negligence Appeals
Recognising which judges most frequently author personal injury and medical negligence judgments helps practitioners predict the doctrinal orientation of a panel before judgment is delivered. The list below records the senior judges whose decisions appear most often in the recent corpus on this page.
| Judge | Role | Key recent PI / medical negligence authorship |
|---|---|---|
| Barniville P. | President of the High Court | Practice Direction HC131 / HC132 establishing the Clinical Negligence List (April 2025) |
| Binchy J. | Court of Appeal Judge | Member of Collins v Parm panel; modular trial reasoning in IT v HSE (December 2025) |
| Collins J. | Court of Appeal Judge | Joint authorship in Duffy v McGee [2022] IECA 254 on expert evidence standards |
| Costello P. | President of the Court of Appeal | Guerin v Doherty [2026] IECA 48 — first appellate AI disclosure guidance |
| Faherty J. | Court of Appeal Judge | Chandler v Minister for Defence [2022] IECA 132 on Statute of Limitations |
| Meenan J. | Court of Appeal Judge | Member of Collins v Parm [2024] IECA 150 panel |
| Haughton J. | Court of Appeal Judge (former) | Murphy v HSE [2021] IECA 3 — cumulative-approach articulation on Order 8 RSC |
| Hyland J. | Court of Appeal Judge | Nolan v County Registrar for Waterford [2025] IECA 110 on costs alignment |
| Murray J. | Court of Appeal Judge | Higgins v Irish Aviation Authority [2020] IECA 277 on Calderbank offers |
| Noonan J. | Court of Appeal Judge | Collins v Parm, Zaganczyk, Crumlish v HSE, McKeown v Crosby, Coughlan v CGR Construction, Nolan v St. Mary's, Meehan v Shawcove, Duffy v McGee |
The dominance of Noonan J. across the recent corpus is doctrinally significant. The substantive proportionality framework — encompassing Collins v Parm, Zaganczyk, Coughlan, McKeown, Meehan, and Crumlish — is largely his judicial product. The retirement of senior judges or rotation onto criminal panels will materially affect the future shape of the corpus.
Common Errors Causing Appellate Reversal
The 2024–2026 corpus discloses a recurring pattern of errors at first instance that produce appellate intervention. The Court of Appeal has been explicit about each. Solicitors and barristers preparing for trial should treat the list as a compliance map.
- Failure to identify the dominant injury on the pleadings. A multi-injury claim that proceeds to trial without a clear dominant-injury thesis invites appellate intervention. The trial judge cannot apply the Collins v Parm methodology without a clear identification at the outset.
- Failure to articulate the temporal-overlap discount on the record. The Court of Appeal in Collins v Parm treated the absence of any articulated discount as an error of law. The trial judge must show the working.
- Failure to apply the reality check against a single-injury comparator. Zaganczyk requires comparison to the Guidelines bracket for a more serious single injury. Omission of this step produces awards that appellate counsel can characterise as "disproportionate to a degree that renders it an error of law."
- Reliance on generic statistical evidence to prove causation. In Crumlish v HSE [2024] IECA 244, the Court rejected the use of population-level tumour doubling-time literature to discharge the causation burden for a specific plaintiff.
- Expert "espousal" — experts who advocate rather than analyse. Duffy v McGee [2022] IECA 254 and Crumlish both criticise experts who "espouse the case too closely." Experts must remain analytical, not advocacy-oriented.
- Failure to object promptly to procedural irregularities at trial. Crumlish reinforces that procedural complaints must be raised at trial — by application to adjourn or amend — or they are waived on appeal.
- Delay in expert procurement. O'Neill v Birthisle [2024] IECA 17 demonstrates that an eight-year delay in obtaining the expert report is fatal to the underlying claim, regardless of liability strength.
- Refusing a Calderbank offer without realistic appellate quantum modelling. McKeown v Crosby [2021] IECA 139 shows the costs sequence that follows where a plaintiff fails to beat the offer at appeal — approximately €25,000 net erosion in that case.
- Failing to issue a section 17 warning letter on the defence side. Milmoe v Chatzis [2025] IECA 149 confirms that the absence of the warning is a material factor against a differential costs order, even where the award falls within Circuit Court jurisdiction.
- Inadequate distillation of grounds on appeal. Crumlish documents appellate exasperation at the submission of 68 grounds of appeal that were ultimately distilled to seven. Excessive grounds without analytical focus invite the court's criticism.
Court of Appeal Personal Injury Appellate Volume
The Courts Service of Ireland's Annual Reports record the volume of appeals received and disposed of by the Court of Appeal each year. The data positions the recent doctrinal output in a quantitative context.
The Court of Appeal, established in October 2014 under the Court of Appeal Act 2014, hears appeals from the High Court in civil matters including personal injury and medical negligence cases. Civil appeals account for the substantial majority of the Court's docket. Reported figures across recent years show that personal injury matters consistently constitute one of the largest categories of civil appeals received, alongside commercial, employment, and judicial review proceedings.
The Personal Injuries Resolution Board's H1 2025 Personal Injuries Award Values Report records that personal injury claim volume nationally remained 33% below the pre-Guidelines peak (2019), with H1 2025 award values 28% below the 2020 baseline. The recent case law operates within this broader contraction of the personal injury system.
For the most current volume statistics, readers are directed to the Courts Service of Ireland's annual reports and the data portal at courts.ie. Figures cited in legal commentary should be verified against the official source before being relied upon.
Ireland vs England and Wales: Doctrinal Divergence on Recent Issues
Irish appellate jurisprudence in 2024–2026 has consistently rejected convergence with English authority on three key issues. The table below maps the divergence for practitioners and academics working comparatively.
| Issue | Ireland | England and Wales |
|---|---|---|
| Multiple-injuries valuation | Dominant injury + uplift + discount per Collins v Parm [2024] IECA 150; reality check per Zaganczyk | Judicial College Guidelines applied differently; no equivalent reality-check overlay codified |
| Nervous shock / secondary victims | Five-part Kelly v Hennessy [1995] 3 IR 253 test reaffirmed in Sheehan v Bus Eireann [2022] IECA 28 | Post-Alcock proximity requirements (physical, temporal, relational) — narrower |
| Damages cap | €550,000 catastrophic-injury ceiling per Personal Injuries Guidelines (anchored in Sinnott v Quinnsworth) | No equivalent catastrophic cap; PSLA calculated by reference to Judicial College Guidelines without ceiling |
| Causation in clinical delay | Patient-specific expert evidence required per Crumlish v HSE [2024] IECA 244; statistical-only causation rejected | Statistical loss-of-chance jurisprudence (Gregg v Scott) operates within material-contribution framework — different evidential threshold |
| Differential costs orders | Discretionary post-Milmoe v Chatzis [2025] IECA 149; section 17 warning letter pivotal | CPR Part 36 framework — automatic costs consequences on offers not beaten at trial |
The pattern across the divergence is that Irish appellate courts have preserved doctrinal autonomy where the English position is materially different. In Sheehan, the Court of Appeal expressly declined to follow more restrictive UK precedents on nervous shock. In Milmoe, the Court declined to import the automatic-consequences logic of CPR Part 36 into the discretionary framework under section 17 of the Courts Act 1981.
Pending Appeals and Forward-Looking Issues
The doctrinal development described on this page is not closed. Several appeals and procedural developments are expected to shape the next phase of Court of Appeal jurisprudence in 2026 and 2027. The list below records the position as at the last review date.
- IT v HSE — modular trials in clinical negligence
- Following the High Court order for a modular trial, any further appellate guidance on case management in complex clinical negligence is expected to refine the application of Hay v O'Grady deference in this specific procedural context. Full neutral citation to be confirmed against courts.ie permalink.
- Further appellate guidance on AI disclosure post-Guerin v Doherty
- Guerin v Doherty [2026] IECA 48 established the initial position. Further appellate or Superior Courts Rules Committee guidance is expected on the form of disclosure, scope of disclosable AI use, and consequences of non-disclosure.
- Judicial Council (Amendment) Bill 2026 — Oireachtas progress
- The proposed extension of the review cycle, mandatory consideration of IRB data, and international benchmarking will reshape the framework within which Court of Appeal quantum decisions operate. The next round of Personal Injuries Guidelines revision is the structural pivot point.
- Resolution of the Order 8 RSC disagreement
- The doctrinal divergence between Noonan J. in Nolan v St. Mary's Diocesan School [2022] IECA 10 and Haughton J. in Murphy v HSE [2021] IECA 3 on the structure of the special-circumstances test remains unsettled. A Supreme Court intervention is the cleanest resolution path.
- Crumlish-line appeals testing the Goldilocks threshold
- Whether the Crumlish evidential threshold is generalised to non-cancer delayed-diagnosis cases (cardiac, neurological, sepsis) will be tested in subsequent appellate decisions. The principle is patient-specific evidence — but its application to non-oncology contexts remains to be developed in the recent case law.
This list of pending appeals will be updated on each substantive review of this page. The next scheduled review is 15 August 2026.
Which Court of Appeal Decisions Matter at Which Stage of a Claim
The decisions on this page operate at different points in the litigation cycle. The map below indicates which authorities are most directly relevant at each phase of a personal injury or medical negligence action.
| Phase | Key recent CoA authorities | What the authority governs |
|---|---|---|
| Pre-action and limitation | Murphy v HSE [2021] IECA 3 · Nolan v St. Mary's [2022] IECA 10 · Chandler v Minister for Defence [2022] IECA 132 | Summons renewal under Order 8 RSC; Statute of Limitations |
| Pleadings and dominant-injury identification | Collins v Parm [2024] IECA 150 · Coughlan v CGR Construction [2024] IECA 78 | Pleading of dominant injury; multi-injury methodology |
| Expert evidence procurement | O'Neill v Birthisle [2024] IECA 17 · Crumlish v HSE [2024] IECA 244 · Duffy v McGee [2022] IECA 254 | Timing of expert procurement; individualised expert evidence; expert objectivity |
| Settlement and Calderbank stage | Higgins v Irish Aviation Authority [2020] IECA 277 · McKeown v Crosby [2021] IECA 139 | Effect of Calderbank offers; costs sequence on refused offers |
| Trial — quantum | Delaney v PIAB [2024] IESC 10 · Collins v Parm [2024] IECA 150 · Zaganczyk [2023] IECA 223 · Meehan v Shawcove [2022] IECA 208 | Personal Injuries Guidelines application; multi-injury method; reality check; proportionality |
| Trial — procedural objections | Crumlish v HSE [2024] IECA 244 · Practice Direction HC131/HC132 | Timely procedural objection; expert evidence handling; Clinical Negligence List management |
| Post-trial — costs | Milmoe v Chatzis [2025] IECA 149 · Nolan v County Registrar Waterford [2025] IECA 110 · Moin v Sicika [2018] IECA 240 | Section 17 differential costs orders; jurisdictional alignment; warning letter requirement |
| Appeal — drafting and conduct | Crumlish v HSE [2024] IECA 244 · Hay v O'Grady [1992] 1 IR 210 · Guerin v Doherty [2026] IECA 48 | Distillation of grounds of appeal; deference standard for findings of fact; AI disclosure in appellate documents |
Short Answers to Common Questions
Short answers to the queries most commonly searched alongside this digest. Each links to the longer treatment elsewhere on this page.
- What is the most important Court of Appeal personal injury decision since 2024?
- Collins v Parm [2024] IECA 150 — articulating the four-step multi-injury methodology applied across the subsequent corpus. Read the full treatment.
- Are the Personal Injuries Guidelines binding on Irish courts?
- Yes. The Supreme Court confirmed binding status in Delaney v PIAB [2024] IESC 10. Read the full treatment.
- What is the reality check in Irish personal injury damages?
- The proportionality test from Zaganczyk v John Pettit [2023] IECA 223 — the cumulative figure for multiple injuries must be tested against the Guidelines bracket for a more serious single injury. Read the full treatment.
- Why did Crumlish v HSE fail?
- The Court of Appeal in Crumlish v HSE [2024] IECA 244 held that generic statistical evidence on tumour doubling times cannot prove causation for a specific plaintiff — patient-specific expert evidence is required. Read the full treatment.
- What does Milmoe v Chatzis mean for differential costs orders?
- Milmoe v Chatzis [2025] IECA 149 confirmed that section 17 Courts Act 1981 orders are discretionary, and that the absence of a defendant warning letter is a material factor against making the order. Read the full treatment.
- Has the Court of Appeal issued guidance on AI use in legal proceedings?
- Yes. Guerin v Doherty [2026] IECA 48 (Costello P.) issued the first appellate guidance on disclosure obligations regarding AI assistance in pleadings, submissions, and evidence preparation. Read the full treatment.
Frequently Asked Questions
What does the Court of Appeal do in personal injury cases?
The Court of Appeal of Ireland reviews High Court decisions on quantum, liability, costs, and procedure in personal injury and medical negligence appeals. It can reduce, increase, or leave the High Court award undisturbed.
The Court sits between the High Court and the Supreme Court. On findings of fact, the Court applies the deferential standard articulated in Hay v O'Grady [1992] 1 IR 210 — it will not disturb credible factual findings supported by evidence. On questions of law and on the application of the Personal Injuries Guidelines, the Court conducts a full review. Since Delaney v PIAB [2024] IESC 10, the Court has consistently reduced awards where High Court judges have departed from the Guidelines without reasoned justification.
In practice: appellate intervention is more common in quantum than in liability. Defendants appeal awards they consider disproportionate; plaintiffs less often appeal because the deference standard makes overturning a fact-finding loss difficult.
Next: see our Case Law hub for landmark authorities the Court of Appeal applies.
What does Collins v Parm mean for a multi-injury claim?
The dominant injury is valued first within the Personal Injuries Guidelines bracket. Non-dominant injuries are aggregated and discounted (typically by around one third) for temporal overlap, then added to the dominant figure. The cumulative total is then tested against the bracket for a more serious single injury.
The methodology was articulated by Noonan J. in Collins v Parm [2024] IECA 150 and operationalised through subsequent decisions including Coughlan v CGR Construction [2024] IECA 78. The first step is identification: which injury is the most significant? The second is valuation within the relevant Guidelines bracket. The third is the uplift calculation — aggregate the non-dominant values, then apply a discount reflecting the concurrent period of pain and suffering. The fourth is the reality check from Zaganczyk [2023] IECA 223: would the cumulative figure approximate or exceed the bracket value for a single catastrophic injury?
In practice: the dominant injury should be identified in the pleadings and supported by expert evidence at the earliest stage. Late-stage shifts in the dominant-injury thesis invite appellate intervention.
Next: read more in our guide to general damages in medical negligence claims.
Are the Personal Injuries Guidelines still binding after Delaney?
Yes. The Supreme Court in Delaney v PIAB [2024] IESC 10 confirmed that the Personal Injuries Guidelines 2021 are constitutionally valid and binding on the courts and on the Personal Injuries Resolution Board (formerly PIAB until 2023).
Departure from a Guidelines bracket is permitted only where the bracket lacks reasonable proportion to what justice requires, and the departing judge must state reasons on the record per section 99 of the Judicial Council Act 2019. The seven-judge Supreme Court panel delivered five separate judgments. Charleton J. presided, with Collins J. delivering the principal judgment (Murray J. concurring), and separate judgments from Hogan J., Faherty J. and Haughton J. The Court identified a narrow procedural unconstitutionality in section 7(2)(g) of the Judicial Council Act 2019, but the Family Leave and Miscellaneous Provisions Act 2021 cured the defect by giving the Guidelines independent legislative effect. Any future material change to bracket values requires primary legislation through the Oireachtas — judicial discretion alone cannot raise the figures.
In practice: trial judges who depart from a bracket without reasoned justification produce appellate-vulnerable awards. The Court of Appeal in Collins v Parm [2024] IECA 150 treated unjustified departure as an error of law.
Next: read the Personal Injuries Guidelines on judicialcouncil.ie for the current bracket values.
When can a defendant seek a differential costs order?
Under section 17(5) of the Courts Act 1981, a trial judge may order a plaintiff to pay the difference between the costs actually incurred in the High Court and the costs that would have been incurred in a lower court — but only where the final award falls within the lower court's jurisdiction. After Milmoe v Chatzis [2025] IECA 149, the order is discretionary, not automatic.
The Court of Appeal in Moin v Sicika [2018] IECA 240 had earlier held that trial judges must make the order where awards fall significantly within a lower court's jurisdiction, unless there is good reason to the contrary. Milmoe refines that presumption: the absence of a section 17 warning letter is itself capable of constituting "good reason" to decline the order. The Court of Appeal in Nolan v County Registrar for the County of Waterford [2025] IECA 110 (Hyland J.) further confirmed that costs recovery must align strictly with the jurisdictional value of the final award.
In practice: a defendant who anticipates jurisdictional issues should issue a section 17 warning letter as soon as the question crystallises. A plaintiff who receives one should re-evaluate forum choice and any Calderbank exposure.
Next: see our note above on the Calderbank architecture under section 169 LSRA 2015.
Why did the plaintiff lose in Crumlish v HSE?
The claim failed at the causation stage. The Court of Appeal in Crumlish v HSE [2024] IECA 244 held that generic statistical literature on tumour doubling times cannot discharge the burden of proof for a specific plaintiff. Individualised expert oncology evidence is required.
The plaintiff sought to establish that her breast cancer was detectable five months before diagnosis by extrapolating backward from the tumour size at confirmed diagnosis, relying on academic literature describing doubling-time ranges of 44 to 147 days. Noonan J. characterised the methodology as failing at the "first causation hurdle." The Court emphasised that abstract population-level evidence cannot establish, on the balance of probabilities, that this specific patient's outcome would have been altered by earlier diagnosis. The judgment also warned against expert "confirmation bias" and against experts "espousing the case too closely" — a standard articulated in Duffy v McGee [2022] IECA 254.
In practice: delayed-diagnosis claims now require individualised oncology evidence commissioned early in the litigation. Practitioners who rely on generic statistical models face dismissal regardless of how persuasive the breach-of-duty evidence may be.
Next: read more in our guide to causation in medical negligence claims.
What are "special circumstances" for summons renewal?
Under Order 8 of the Rules of the Superior Courts, a personal injuries summons may be renewed where "special circumstances" justify the extension. The Court of Appeal authorities articulate different structural approaches — the position remains unsettled in Ireland.
Noonan J. in Nolan v Board of Management of St. Mary's Diocesan School [2022] IECA 10 applied a two-stage approach: special circumstances must exist as a threshold matter before the court considers the balance of justice. Haughton J. in Murphy v HSE [2021] IECA 3 articulated a cumulative analysis — special circumstances and balance of justice considered together. High Court judges have applied both frameworks since 2022. Short delays with credible explanations have succeeded; ordinary solicitor inadvertence, without more, generally has not.
In practice: if the 12-month service window is missed, the renewal application should be brought immediately and supported by detailed affidavit evidence explaining the reasons for delay and addressing any prejudice to the defendant.
Next: read more in our guide to time limits in personal injury claims.
Who is the current President of the Court of Appeal?
Ms Justice Caroline Costello was formally appointed President of the Court of Appeal on 3 October 2024, succeeding Mr Justice George Birmingham, following the Government's nomination in July 2024. She is the third president of the Court since its establishment in 2014.
Costello P. was educated at University College Dublin, the University of Oxford and King's Inns. She was called to the Bar in 1988, took silk in 2010, and was appointed to the High Court in 2014 before joining the Court of Appeal in 2018. Costello P. delivered the leading judgment in Guerin v Doherty [2026] IECA 48, the first appellate guidance on AI disclosure obligations in Irish legal proceedings, and has continued the consistent corrective approach of the Court on quantum disproportion.
In practice: applications to the Court of Appeal are now lodged through the registry under Costello P.'s practice directions, including the revised criminal-appeals direction CA15 (effective from 27 May 2025).
Next: see the official biography on the Courts Service of Ireland.
What is a section 17 warning letter and when should it issue?
A section 17 warning letter is correspondence served by a defendant on a plaintiff under section 17 of the Courts Act 1981, warning that the case is suitable for a lower court and that a differential costs order will be sought if the award falls within the lower court's monetary jurisdiction.
After Milmoe v Chatzis [2025] IECA 149, the absence of a section 17 warning letter is a material factor weighing against making a differential costs order, even where the final award falls within Circuit Court jurisdiction (under €60,000). The letter is not a formal statutory prerequisite to the discretion under section 17(5), but practitioners now treat it as effectively decisive. The letter should issue as soon as the defendant has a reasonable basis to anticipate that the eventual award will fall below the High Court jurisdictional threshold.
In practice: defence solicitors should issue the letter when expert quantum evidence first emerges. Plaintiff solicitors who receive one should consider remittal under section 25 of the Courts of Justice Act 1924 or risk a costs differential order at trial.
Next: see the Costs Discipline section above.
What is a Calderbank offer and how does it interact with the Personal Injuries Guidelines?
A Calderbank offer is a written offer of settlement marked "without prejudice save as to costs" that, if rejected by the plaintiff and not bettered at trial, exposes the plaintiff to liability for the defendant's costs from the date of the offer onwards.
The framework operates under section 169 of the Legal Services Regulation Act 2015, which empowers courts to consider the terms of any prior settlement offer when allocating costs. In McKeown v Crosby [2021] IECA 139, Noonan J. ordered a plaintiff who had refused a €47,156 offer to pay both differential costs and the costs of the appeal after recovering only €41,000 — a roughly €25,000 reduction in net recovery attributable to the costs sequence alone. Since the Personal Injuries Guidelines came into force in April 2021, well-pitched Calderbank offers near the Guidelines bracket midpoint have become highly effective.
In practice: plaintiff solicitors should respond to any Calderbank offer with a written assessment of bracket valuation. Refusal of a proportionate offer is the single most common cause of costs erosion at appellate level.
Next: see the Calderbank Architecture section above for the section 169 framework.
When does the Court of Appeal direct a modular trial?
A modular trial separates liability from quantum (or some other discrete issue) so the issues can be determined in stages. The Court of Appeal applies the deferential Hay v O'Grady standard to High Court modular-trial case management decisions, intervening only where there is a real risk of injustice.
The Court of Appeal in IT v Health Service Executive (22 December 2025, Binchy J.) upheld a High Court order directing a modular trial in a complex clinical negligence action. The decision is consistent with the consistent appellate practice of treating trial-judge case management decisions as discretionary. Modular trials are increasingly directed in clinical negligence proceedings under Practice Direction HC131 and HC132, which establish the Clinical Negligence List in the Dublin Personal Injuries List with effect from 28 April 2025.
In practice: applications for modular trial should be supported by evidence that bifurcation will reduce overall trial time, narrow expert issues, or facilitate earlier settlement. The Judge in Charge of the Clinical Negligence List will direct case management.
Next: read the Clinical Negligence List Practice Directions HC131 and HC132 on courts.ie.
What does Guerin v Doherty require for AI disclosure in legal proceedings?
In Guerin v Doherty [2026] IECA 48, Costello P. issued the first Irish appellate guidance on disclosure obligations regarding the use of artificial intelligence in legal proceedings and court documents. Parties using AI in the preparation of submissions, evidence summaries, or pleadings should disclose that use.
The Court did not establish a categorical prohibition on AI assistance but established a transparency principle: undisclosed reliance on AI risks undermining the integrity of court documents, especially where AI-generated content includes fabricated citations or "hallucinated" authorities. The judgment intersects with the Law Society's professional conduct guidance for solicitors using AI tools, and with the Bar Council's emerging code on AI use by barristers. Practitioners should keep contemporaneous records of any AI use in preparing court documents.
In practice: the safest position is to disclose any substantive AI use in court documents and to verify every cited authority by reference to the courts.ie or BAILII source. Failure to do so risks both adverse costs orders and professional regulatory consequences.
Next: see the Emerging Issues section above for the wider doctrinal context.
How much do Court of Appeal awards typically get reduced compared to the High Court?
Across the 2024–2026 corpus of Court of Appeal personal injury decisions, appellate reductions cluster between 30% and 50% of the High Court award. The pattern is consistent across both pre-Guidelines and post-Guidelines cases.
Indicative reductions include Collins v Parm [2024] IECA 150 at 42% (€95,000 → €55,000), Coughlan v CGR Construction [2024] IECA 78 at 30%, Zaganczyk v John Pettit [2023] IECA 223 at 33% (€90,000 → €60,000), Payne v Nugent [2015] IECA 268 at 46%, Nolan v Wirenski [2016] IECA 56 at 48% (€125,680 → €65,000), and McKeown v Crosby [2020] IECA 242 at approximately 46%. The Court of Appeal's reduction language characterises these awards as "disproportionate to a degree that renders it an error of law" — the standard articulated by Noonan J. in Zaganczyk and applied repeatedly.
In practice: plaintiff solicitors should assume that any High Court award disproportionate to the relevant Guidelines bracket is at material risk of appellate reduction. The reduction pattern is the empirical answer to the question "how strict is the Court of Appeal?".
Next: see the Appellate Reduction Pattern section above for the quantitative chart.
Related Questions
If your reading on this digest raises related questions, the following bridge to the dedicated landmark pages on this site.
Related Cases, Legislation, and Resources
Cluster — landmark cases
- Payne v Nugent [2015] IECA 268 — the foundational proportionality authority. Read the dedicated case page.
- Russell v HSE [2015] IECA 236 — the real rate of return framework. Read the dedicated case page.
- Sinnott v Quinnsworth [1984] ILRM 523 — the catastrophic damages cap. Read the dedicated case page.
- Morrissey v HSE [2020] IESC 6 — CervicalCheck liability and disclosure. Read the dedicated case page.
- Dunne v National Maternity Hospital — the standard of care in clinical negligence. Read the dedicated case page.
- Philp v Ryan — the Periodic Payments architecture. Read the dedicated case page.
Cluster — legislation
- Judicial Council Act 2019 (the empowering Act for the Personal Injuries Guidelines)
- Civil Liability and Courts Act 2004 (section 22 mandates regard to the Guidelines)
- Civil Liability Act 1961 (section 34 contributory negligence)
- Civil Liability (Amendment) Act 2017 (Periodic Payments)
Cluster — practice areas
Glossary of Key Terms
The terms below recur throughout the recent recent case law. Each definition reflects how the term is used by the Court of Appeal in 2024–2026, not its broader meaning in tort theory.
- Dominant injury
- The most significant injury identified in a multi-injury claim, valued first within the relevant Personal Injuries Guidelines bracket. Articulated by Noonan J. in Collins v Parm [2024] IECA 150.
- Uplift
- The traditional practitioner term for the additional value assigned to non-dominant injuries above the dominant-injury figure. The term remains current but the operation now incorporates the temporal-overlap discount.
- Global discount
- The reduction applied to the aggregate of non-dominant injuries to reflect the concurrent period of pain, suffering, and recovery shared across simultaneous injuries. Typically one third in recent CoA decisions. Term used by the Personal Injuries Guidelines Committee's draft amendments.
- Reality check
- The proportionality test articulated in Zaganczyk v John Pettit [2023] IECA 223: the cumulative figure for multiple injuries must be tested against the Guidelines bracket for a more serious single injury before being finalised.
- Calderbank offer
- A written settlement offer made on an open or "without prejudice save as to costs" basis, used to shift costs risk to a party who declines the offer and fails to beat it at trial. The Irish operative authority is Higgins v Irish Aviation Authority [2020] IECA 277.
- Differential costs order
- An order under section 17(5) of the Courts Act 1981 requiring a plaintiff to pay the difference between the costs actually incurred in the High Court and the costs that would have been incurred had proceedings been issued in the appropriate lower court. Discretionary after Milmoe v Chatzis [2025] IECA 149.
- Section 17 warning letter
- A defendant's pre-trial letter warning the plaintiff that, on the likely value of the claim, the defendant will seek a differential costs order if the eventual award falls within the jurisdiction of a lower court. The presence or absence of such a letter is a material factor under Milmoe.
- Goldilocks problem
- The evidential paradox in delayed-diagnosis claims: the plaintiff must establish that the missed lesion was simultaneously detectable at the index examination yet sufficiently early-stage that earlier intervention would have materially altered the outcome. Recognised in commentary on Crumlish v HSE [2024] IECA 244.
- Special circumstances (Order 8 RSC)
- The statutory threshold for renewal of a personal injuries summons under Order 8 of the Rules of the Superior Courts. The structure of the test — two-stage per Nolan v St. Mary's [2022] IECA 10 (Noonan J.) or cumulative per Murphy v HSE [2021] IECA 3 (Haughton J.) — remains contested.
- Hay v O'Grady deference
- The appellate standard for findings of fact: the Court of Appeal will not disturb credible factual findings supported by evidence at first instance. Articulated in Hay v O'Grady [1992] 1 IR 210 and cited in every appellate quantum decision.
- Modular trial
- A trial structure in which discrete issues (typically liability, causation, and quantum) are tried in separate modules rather than concurrently. Approved by the High Court and supported on appeal in clinical negligence under IT v HSE (December 2025).
- Causation hurdle
- The requirement that the plaintiff prove, on the balance of probabilities, that the defendant's breach materially altered the medical outcome. The "first causation hurdle" formulation derives from Noonan J. in Crumlish v HSE [2024] IECA 244.
Index of Cases Cited in This Digest
The table below indexes every decision discussed on this page, alphabetised by case name. Where the case is treated substantively in a dedicated section, the anchor links directly to that section. Primary-source links route to the courts.ie judgments database.
| Case | Citation | Court | Lead judge | Topic on this page |
|---|---|---|---|---|
| Chandler v Minister for Defence | [2022] IECA 132 | Court of Appeal | Faherty J. | Statute of Limitations |
| Collins v Parm & Ors | [2024] IECA 150 | Court of Appeal | Noonan J. | Multi-injury methodology |
| Coughlan v CGR Construction Ltd | [2024] IECA 78 | Court of Appeal | Noonan J. | RTA multi-injury quantum |
| Crumlish v HSE | [2024] IECA 244 | Court of Appeal | Noonan J. | Causation in delayed diagnosis |
| Delaney v PIAB | [2024] IESC 10 | Supreme Court | Collins J. (principal judgment; Charleton J. presiding) | Constitutional validity of Guidelines |
| Duffy v McGee & Anor | [2022] IECA 254 | Court of Appeal | Noonan J. / Collins J. | Expert evidence standards |
| Germaine v Day | [2025] IEHC 420 | High Court | — | Nervous shock — sudden event criterion |
| Guerin v Doherty | [2026] IECA 48 | Court of Appeal | Costello P. | AI disclosure in legal proceedings |
| Higgins v Coleman & Anor | [2026] IEHC 757 / 144 | High Court | Higgins J. | Inflation within Guidelines brackets; costs |
| Higgins v Irish Aviation Authority | [2020] IECA 277 | Court of Appeal | Murray J. | Calderbank offers |
| IT v HSE | December 2025 (citation pending) | Court of Appeal | Binchy J. | Modular trials in clinical negligence |
| Kandaurova v Circle K Energy Group Limited | [2025] IECA 13 | Court of Appeal | — | Public liability liability/quantum review |
| McKeown v Crosby | [2020] IECA 242 (substantive); [2021] IECA 139 (costs) | Court of Appeal | Noonan J. | Calderbank costs sequence |
| Meehan v Shawcove Limited | [2022] IECA 208 | Court of Appeal | Noonan J. | Proportionality principle |
| Milmoe v Chatzis & Anor | [2025] IECA 149 | Court of Appeal | — | Differential costs orders |
| Moin v Sicika & O'Malley v McEvoy | [2018] IECA 240 | Court of Appeal | — | Differential costs presumption |
| Murphy v Depuy Ireland Unlimited Company | [2023] IEHC 220 | High Court | Barr J. | Order 8 RSC framework selection |
| Murphy v HSE | [2021] IECA 3 | Court of Appeal | Haughton J. | Cumulative-approach Order 8 RSC |
| Nolan v Board of Management of St. Mary's Diocesan School | [2022] IECA 10 | Court of Appeal | Noonan J. | Two-stage Order 8 RSC |
| Nolan v County Registrar for Waterford | [2025] IECA 110 | Court of Appeal | Hyland J. | Costs jurisdictional alignment |
| Nolan v Wirenski | [2016] IECA 56 | Court of Appeal | Irvine J. | Proportionality across categories |
| O'Neill v Birthisle | [2024] IECA 17 | Court of Appeal | — | Delay in expert procurement |
| Payne v Nugent | [2015] IECA 268 | Court of Appeal | — | Foundational proportionality |
| Sheehan v Bus Eireann | [2022] IECA 28 | Court of Appeal | Noonan J. (Collins J. concurring) | Nervous shock — Kelly v Hennessy test |
| Somers v Commissioner of An Garda Síochána | [2025] IEHC 388 | High Court | — | High Court application of Collins method |
| Zaganczyk v John Pettit Wexford Unlimited Company | [2023] IECA 223 | Court of Appeal | Noonan J. | Reality check; proportionality test |
References
Court of Appeal of Ireland — judgments cited
- Collins v Parm & Ors [2024] IECA 150 (Noonan J., 20 June 2024). courts.ie.
- Zaganczyk v John Pettit Wexford Unlimited Company & Anor [2023] IECA 223 (Noonan J.). courts.ie.
- Coughlan v CGR Construction Ltd [2024] IECA 78 (Noonan J., 16 April 2024). courts.ie.
- Meehan v Shawcove Limited [2022] IECA 208 (Noonan J.). courts.ie.
- Kandaurova v Circle K Energy Group Limited [2025] IECA 13. courts.ie.
- Milmoe v Chatzis & Anor [2025] IECA 149. courts.ie.
- Nolan v County Registrar for the County of Waterford & Ors [2025] IECA 110 (Hyland J., 20 May 2025). courts.ie.
- McKeown v Crosby [2020] IECA 242 (substantive) and [2021] IECA 139 (costs) (Noonan J.). courts.ie.
- Moin v Sicika and O'Malley v McEvoy [2018] IECA 240. courts.ie.
- Higgins v Irish Aviation Authority [2020] IECA 277 (Murray J.). courts.ie.
- Crumlish v Health Service Executive [2024] IECA 244 (Noonan J., October 2024). courts.ie.
- O'Neill v Birthisle [2024] IECA 17. courts.ie.
- Duffy v McGee & Anor [2022] IECA 254 (Noonan J. and Collins J.). courts.ie.
- IT v Health Service Executive (22 December 2025, Binchy J.) — full neutral citation to be confirmed against the courts.ie permalink. courts.ie.
- Nolan v Board of Management of St. Mary's Diocesan School [2022] IECA 10 (Noonan J.). courts.ie.
- Murphy v HSE [2021] IECA 3 (Haughton J.). courts.ie.
- Chandler v Minister for Defence [2022] IECA 132 (Faherty J.). courts.ie.
- Sheehan v Bus Eireann/Irish Bus and Vincent Dower [2022] IECA 28 (Noonan J., Collins J. concurring). courts.ie.
- Guerin v Doherty [2026] IECA 48 (Costello P.). courts.ie.
- Nolan v Wirenski [2016] IECA 56 (Irvine J., 25 February 2016). courts.ie.
- Payne v Nugent [2015] IECA 268. courts.ie.
Supreme Court (referenced for context)
- Delaney v Personal Injuries Assessment Board, the Judicial Council, Ireland and the Attorney General [2024] IESC 10 (Collins J. delivering principal judgment, Murray J. concurring; Charleton J. presiding; 9 April 2024). courts.ie.
High Court (referenced for context)
- Higgins v Coleman & Anor [2026] IEHC 757 (Higgins J., substantive) and [2026] IEHC 144 (costs ex tempore). courts.ie.
- Somers v Commissioner of An Garda Síochána & Ors [2025] IEHC 388. courts.ie.
- Germaine v Day [2025] IEHC 420. courts.ie.
- Murphy v Depuy Ireland Unlimited Company [2023] IEHC 220 (Barr J.). courts.ie.
Legislation
- Courts Act 1981, section 17 — differential costs orders.
- Civil Liability and Courts Act 2004, section 22 — regard to Personal Injuries Guidelines.
- Legal Services Regulation Act 2015, sections 168 and 169 — costs framework.
- Civil Liability Act 1961, section 34 — contributory negligence.
- Judicial Council Act 2019.
- Civil Liability (Amendment) Act 2017 — Periodic Payments.
- Rules of the Superior Courts — Order 8 (renewal of summons), Order 22 (lodgments and tenders), Order 99 (costs).
Guidelines, Practice Directions, and Reports
- Personal Injuries Guidelines (Judicial Council, March 2021).
- Personal Injuries Guidelines Committee Report (Judicial Council).
- High Court Clinical Negligence List — Practice Directions HC131 and HC132, effective 28 April 2025 (Barniville P.).
- General Scheme of the Judicial Council (Amendment) Bill 2026 (published January 2026).
- Personal Injuries Award Values Report H1 2025 (Injuries Resolution Board).
- Injuries Resolution Board (formerly Personal Injuries Assessment Board, renamed 2023).
- Courts Service of Ireland Annual Reports — for appellate volume and disposal statistics.
Professional and regulatory bodies (authoritative sources)
- Law Society of Ireland — solicitor regulatory authority under the Solicitors Acts 1954–2015 and the Legal Services Regulation Act 2015.
- The Bar of Ireland — barrister representative body publishing continuing professional development materials on personal injury and medical negligence.
- Law Reform Commission of Ireland — statutory advisory body publishing reports on Irish tort law and procedure (search for personal injury and medical negligence working papers and final reports).
- Legal Services Regulatory Authority — regulator established under the Legal Services Regulation Act 2015.
- Revised Acts of the Oireachtas — consolidated/revised versions of Acts incorporating amendments.
- Houses of the Oireachtas — Bills, debates, and committee reports including the Judicial Council (Amendment) Bill 2026 progress.
Gary Matthews Solicitors
Medical negligence solicitors, Dublin
We help people every day of the week (weekends and bank holidays included) that have either been injured or harmed as a result of an accident or have suffered from negligence or malpractice.
Contact us at our Dublin office to get started with your claim today