Can a product manufacturer be subject to liability for a competitor’s product? American tort law has always said, “No.” It does not matter if the products are identical. Companies are not to be their competitors’ keepers.

Nevertheless, over the past few years, three courts have overturned this fundamental of tort law, holding that a manufacturer of a brand-name prescription drug can be subject to liability even when a plaintiff alleges that he or she was harmed by a generic drug made by the brand-name manufacturer’s competitor. Most courts, including four federal courts of appeal and dozens of federal district and state trial courts, have rejected this expansion of tort law.

This debate has intensified since 2011, when the Supreme Court of the United States held that all duty to warn claims against manufacturers of generic drugs are preempted by federal drug. The personal injury bar is hoping that courts will give competitor liability theories a new look, particularly when courts find that there is no other path for users of generic drugs to sue.

This Article explains the reasons courts should continue resisting any temptation to change state tort law to allow for competitor liability: (1) it is driven by a search for pockets for paying claims in violation of fundamental tort law principles; (2) the overwhelming majority of courts have continued rejecting competitor liability, even since the Supreme Court ruling; and (3) shifting liability to manufacturers of brand-name drugs could have significant adverse legal and health care consequences.