SCOTUS Changes ‘Impossibility Preemption’ Landscape
A 5/20 Supreme Court decision in a Merck Fosamax case involving the company’s alleged failure to warn about atypical femur fractures “will change the dynamics of litigation involving the impossibility defense, and will introduce new litigation uncertainty due to a shift in the decision maker for impossibility preemption.” That’s the view of attorney Ethan Townsend (McDermitt Will &Emery) writing in a blog post.
Townsend says the high court unanimously reversed a 3rd Circuit Court of Appeals decision that held that the “clear evidence” standard enunciated by the Supreme Court in 2009 in Wyeth v Levine was a factual burden of proof for a jury to decide. The high court in the Fosamax case said the question of whether there is clear evidence that FDA would have rejected a proposed labeling change was a question of law for a judge to decide.
The post says there were differences in the justices’ reasoning, even though the decision was unanimous. As a result, Townsend writes, questions still remain. One such question is whether a manufacturer must use the “changes being effected” (CBE) process whenever it wants to make a labeling change in hopes of preserving the impossibility preemption defense. He says the court’s opinion does not go that far, only stating that because of the CBE process, manufacturers will not “ordinarily be able to show that there is an actual conflict between state and federal law such that it was impossible to comply with both.”
According to Townsend, it seems possible, if not likely, that many lower courts will simply default to a bright-line rule that requires manufacturers to use the CBE process, and for FDA to thereafter disapprove the label warning alleged to be required by state law, to successfully invoke the impossibility defense.