A Pennsylvania Superior Court panel affirmed a defense win for Lowe’s Home Centers LLC and MTD Products Inc. in a products suit over a lawnmower accident, holding that the plaintiffs’ failure-to-warn theory could not survive because the injured user admitted he did not read the warnings posted on the mower. The decision leaves intact both the trial court’s pretrial summary judgment disposing of the warning-based claims and the jury verdict for the defendants. The panel also rejected challenges to bifurcation, evidentiary rulings, and the admission of defense expert testimony.
What Happened
Jerome and Cheyenne McDonnell sued Lowe’s and MTD after Jerome McDonnell suffered a severe foot injury while mowing his yard with an MTD-manufactured mower purchased at Lowe’s.
Court records described the incident as occurring while McDonnell was mowing down a slope. He slipped, and his foot went under the mower, where it was mangled by the blades.
The mower was a floor model and, according to the record, did not come with an instruction manual. McDonnell argued that additional warnings—particularly guidance about releasing the operator presence control and pushing the mower away after losing footing—should have been provided.
Before trial, the trial court granted summary judgment to Lowe’s and MTD on the failure-to-warn claims. The case proceeded to trial on the remaining issues, where the companies ultimately prevailed. On appeal, the Superior Court affirmed the trial court across the board.
Why the Failure-to-Warn Claims Failed on Appeal
The Superior Court focused on a core causation problem for warning-based claims: the plaintiff’s own admission that he did not read the warnings already provided.
The panel concluded that McDonnell’s attempt to undo the summary judgment ruling relied on a mischaracterization of the factual record—specifically, his insistence that mowing on a slope was not a factor in the accident. The court found that position was contradicted by his own testimony indicating he fell while moving down a slope, not on a flat portion of the yard.
That factual dispute mattered because the mower’s existing warnings included slope-related guidance. The opinion noted that the mower warned against mowing up or down slopes at all, undercutting the argument that the warnings were insufficient on the point most closely tied to how the accident occurred.
The appellate court also emphasized the absence of evidence that any additional warning would have changed McDonnell’s conduct. It found the record “glaringly absent” of proof that he would have heeded further instructions and acted differently in the moments leading up to the injury.
The Manual Argument: Undermined by Plaintiff’s Own Testimony
McDonnell also contended that because the mower was a discounted floor model without a manual, he was deprived of additional safety information.
But the panel pointed to testimony that McDonnell did not seek out a manual because he did not think he needed one, and that he did not consult instruction manuals for his tools generally. The opinion highlighted his description of lawnmower use as straightforward—start it, cut the grass, and put it away—concluding that the record did not support a finding that providing a manual would have altered his behavior.
For defense counsel, the decision is a reminder that even where a plaintiff alleges missing or inadequate warnings, testimony about the plaintiff’s habits and actual reading/consulting practices can be dispositive on warning causation.
Bifurcation, Evidence, and Defense Experts: No Abuse of Discretion
The McDonnells also challenged several trial-management and evidentiary decisions, including:
- The trial court’s decision to bifurcate the trial and reserve the plaintiffs’ medical expert witnesses for a damages phase, contingent on proving liability
- Evidentiary rulings allowing defendants to introduce evidence about product warnings
- The admission of defense expert testimony about how lawnmower accidents occur
The panel disposed of these arguments succinctly, holding that the trial judge—Judge Jeffery D. Wright—did not abuse his discretion and that the court’s reasoning for bifurcation and evidentiary rulings was sound.
While the opinion did not elaborate at length, it is notable for defense practitioners that the court endorsed (1) keeping medical causation and damages experts out of the liability phase through bifurcation, and (2) allowing defendants to develop a warnings-and-accident-mechanism record through both documents and expert testimony.
What This Means for Defendants and Insurers
The decision reinforces several themes that frequently drive outcomes in consumer-product warning cases:
- Heeding/causation remains central: A plaintiff’s admission that they did not read existing warnings can be fatal to a failure-to-warn claim absent evidence they would have followed an additional or different warning.
- Accident mechanics can narrow warning theories: Where the mechanism of injury aligns with an existing warning (here, slope-related warnings), courts may view “missing warning” theories as speculative.
- Trial structure can limit damages exposure at the liability phase: The panel’s approval of bifurcation and the sequencing of medical experts provides support for defense requests to keep high-impact damages testimony from influencing liability determinations.
- Defense experts on incident dynamics can survive appeal: The ruling affirmed the trial court’s decision to allow defense experts to explain how lawnmower accidents occur, supporting a strategy of pairing documentary warnings evidence with technical testimony on loss-of-footing scenarios.
MTD and Lowe’s were represented on appeal by attorneys from Dickie McCamey & Chilcote PC.
