Brown v. McDonald's Corp.
Facts
Susan Brown bought and ate a McLean Deluxe at a McDonald's franchise owned by Potts and shortly afterward developed a rash, tight chest, blue lips, and hives requiring immediate treatment and a five-hour hospital stay. The Browns alleged that carrageenan, a seaweed-derived ingredient in the sandwich, caused the reaction and that defendants knew or should have known of the risk but failed to warn. McDonald's and Keystone participated in development of the McLean, and Potts sold it at his restaurant. The defendants pointed to an ingredient flier listing carrageenan, but Brown testified she did not receive it and did not know it was available.
Issue
Whether summary judgment was proper for McDonald's and Keystone on the Browns' statutory product-liability failure-to-warn claims, and for Potts on the Browns' supplier-liability theories. More specifically, the court considered whether the Browns produced evidence creating genuine issues of material fact on defect, duty to warn, and causation as to the manufacturers, and on duty as to the supplier.
Rule
Under R.C. 2307.73 and 2307.76, a manufacturer is liable for compensatory damages on a product-liability claim only if the claimant shows the product was defective due to inadequate warning or instruction and that the defective aspect proximately caused the harm. A product is defective due to inadequate warning if, when it left the manufacturer's control or at a relevant post-marketing time, the manufacturer knew or should have known of the associated risk and failed to provide the warning a reasonably careful manufacturer would have given in light of the likelihood and seriousness of the harm; there is no duty to warn of open and obvious or common-knowledge risks. Under R.C. 2307.78, supplier liability is limited to negligence, strict liability based on an express representation, or certain manufacturer-linked circumstances; an implied warranty theory does not satisfy the statute's express-representation requirement. A supplier is negligent for failing to warn only when it knows or has reason to know of a latent defect rendering the product unsafe, and absent such knowledge or reason to know, it has no duty to inspect or investigate further.
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