This case was based on the distinction between brand name drugs and generics as decided by the U.S. Supreme Court in Wyeth v. Levine, 555 U.S. 555 (2009) and PLIVA v. Mensing, 564 U.S. 604 (2011). The federal district court judge in Chicago, the Northern District of Illinois, dismissed failure-to-warn claims made against Pfizer, the manufacturer of Depo-T, a testosterone therapy that the Food and Drug Administration (FDA) classified as a generic drug.
In the Wyeth case, it was ruled that federal law does not pre-empt state law claims based on allegations that the manufacturer of a brand name drug failed to provide an adequate warning label. When a drug manufacturing company that produces a brand name drug realizes its warning label is inadequate, it can invoke a changes-being-effected regulation to immediately provide beefed-up warnings without prior FDA approval.
But because federal law requires the manufacturer of generic drugs to use the warning label approved for the brand-named version, Mensing ruled that conflict-pre-emption bars claims that the manufacturer of the generic version failed to provide adequate warnings.