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See the 60-second demo →In early 2026, a Texas Court of Appeals decision — covered in Mealey's and Law360 — reversed a defense verdict in a gallbladder/post-operative-sepsis med-mal case. The trial court had excluded the plaintiff's sole expert, and a defense verdict had followed. The appellate court held that exclusion was an abuse of discretion. New trial.
Reversal of a Daubert exclusion on appeal is rare in 2024–2026. Most exclusions stick. The post-amendment FRE 702 environment, and the parallel state-court tightening, has made the appellate posture harder than it used to be. So when a plaintiff-side reversal does land, it is worth studying in detail — not as a celebration but as a template.
If you are a plaintiff attorney whose case ever might depend on appellate review of a Daubert ruling, the Texas decision is the cleanest 2026 illustration of what it takes to preserve that issue cleanly.
The plaintiff alleged that post-operative care failures after a gallbladder procedure had caused sepsis and resulting harm. The case turned on the plaintiff's sole standard-of-care and post-operative-care expert. The defense moved to exclude the expert; the trial court granted the motion; the case proceeded to trial without the plaintiff's causation testimony; the jury returned a defense verdict.
The Texas Court of Appeals reversed. Two strands of reasoning:
The defense verdict was vacated. The case was remanded for a new trial.
The post-2023 FRE 702 amendment, and the Sardis v. Overhead Door framework that the amendment formalized, make appellate reversal of Daubert exclusions structurally harder. Three reasons:
Doctrinal alignment. The amendment formalized that reliability is admissibility, not weight. Trial courts that exclude on reliability grounds are now applying the rule the way the rule explicitly directs. Appellate courts have less doctrinal room to reverse.
Abuse-of-discretion review. Most Daubert rulings are reviewed for abuse of discretion. That standard is deferential by design. The appellate court has to find that the trial court's exclusion was outside the range of acceptable judgment — not just that the appellate court would have ruled differently.
The plaintiff-side strike rate. Across the cases catalogued in our internal research, the strike rate against plaintiffs' experts was 78%. Most of those exclusions were affirmed on appeal. Engilis v. Monsanto (9th Cir. 2025) — affirmed. Scottoline v. Women First (Del. 2025) — affirmed by the state's highest court. The Maryland brachial-plexus and Bayview/Hopkins cases (2024–2025) — both affirmed on appeal. The Acetaminophen MDL exclusions — affirmed in their procedural posture. The Paraquat MDL exclusions — affirmed in summary judgment. The pattern is consistent.
The Texas reversal is one of three plaintiff-side wins identified in the same research. The other two are Moore v. Intuitive Surgical (11th Cir. 2021), still cited heavily, and a Delaware Superior Court denial of a defense motion to exclude in In re Zantac — itself later reversed by the Delaware Supreme Court in late 2025, which wiped out approximately 75,000 cases.
That makes the Texas decision unusually valuable as a study object. Why did this exclusion get reversed when so many others have not?
The Texas reversal is instructive less for its specific holding than for what the underlying record made possible. Three observations:
The record at the trial court level was clean. The expert's qualifications and methodology were sufficient under the applicable standard, the appellate court found. That conclusion was only possible because the trial-court record contained the qualifications and methodology in a form that the appellate court could evaluate. Reports built sloppily do not get reversed on appeal even when the trial court ruling was wrong, because the appellate court cannot find that the trial court was outside the range of reasonable judgment without a clean record.
The expert was the sole expert. When the plaintiff has only one causation or standard-of-care expert and the trial court excludes that expert, the practical effect is summary judgment or a defense verdict. Texas reflects that posture cleanly. The appellate court understood the exclusion was outcome-determinative, which sharpens appellate review.
The case had recognizable categorical clarity. Gallbladder surgery; post-operative sepsis; standard-of-care testimony from an appropriate specialty. Cases where the underlying medicine is clear are easier to read on appeal than cases where the underlying medicine is contested at every level. The appellate court could evaluate the methodology because the methodology was about a question the court could understand.
The implication for plaintiff strategy is that appellate preservation of a Daubert exclusion is a function of how the report and the engagement were built — not of how the brief was written. The brief is downstream of the record. A report that does not survive Daubert at the trial court level rarely survives on appeal even when the trial court was wrong. A report that does survive Daubert on the merits, but is excluded for some narrower reason, can be reversed when the appellate posture is clean.
Four concrete steps:
1. Build the report for both trial-court Daubert review and appellate sufficiency review. That means the report should articulate: (a) the expert's qualifications mapped to the precise causation question, (b) the methodology used and its application to this case's facts, (c) the alternative-cause analysis, and (d) the substantive opinion. A report with these four components is reviewable at both levels. A report missing any of them is not.
2. Anchor every standard-of-care opinion to a named source. Rivera Rodriguez v. Hospital San Cristobal (1st Cir. 2024) is the cautionary tale on this point. A report that says "the care was below standard" without naming the standard is structurally defective. The Texas reversal, by contrast, was built on a methodology the appellate court could identify and evaluate.
3. Preserve the Daubert hearing record. When the trial court holds a Daubert hearing, ensure the record contains the expert's qualifications, methodology, and answers to anticipated cross. When the trial court excludes on the papers without a hearing, object on the record and request a hearing. Appellate review is much easier when the record contains the expert's substantive testimony than when it contains only the report.
4. Have a backup expert when feasible. Cases where the plaintiff has only one expert are uniquely vulnerable to a single Daubert ruling. When budget allows, retain a second expert in the same field whose opinion overlaps. The second expert is insurance against an erroneous exclusion of the first.
A broader strategic point: Texas's appellate sliver exists. It is narrow. It rewards firms that built the record cleanly from the start. It does not rescue firms that wrote sloppy reports and hoped to fix the problem on appeal.
MedLegal AI's Daubert workup tool optimizes the report for both trial-court Daubert review and appellate sufficiency review. The tool requires every report to include qualifications mapped to the causation question, methodology articulation, alternative-cause analysis, and substantive opinion before the report can be flagged ready for filing. It maintains a precedent library that includes both Robinson (Texas) and federal-equivalent standards, so the report's structure can be aligned with the gatekeeping standard the trial court will apply. The tool also surfaces the kind of documentation that builds a clean appellate record — pre-specified protocols, deposition transcripts aligned with the report, alternative-cause matrices with record citations. The point is to prepare smarter for Daubert challenges — to give your case a posture that survives both layers of review. You can run a free Daubert workup on your expert here.
The Texas reversal is the rare appellate save in 2024–2026 plaintiff-side Daubert practice. It reads as a template, not as a windfall. The reversal was possible because the underlying record was clean — qualifications mapped to the question, methodology recognizable, application to facts documented. Plaintiff firms that build their reports that way preserve the Texas appellate sliver. Firms that do not, do not. The cases that survive Daubert at every level in 2026 will be the ones whose reports were built with both trial-court and appellate review in mind from engagement.
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MedLegal AI is software, not a law firm. We do not provide legal advice. All AI-generated outputs require independent review by a licensed attorney.
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