Cancellation of Claims by USPTO During Reexam is Binding in Pending District Court Infringement Litigation
Last month, the Federal Circuit addressed the question of “whether, under the reexamination statute, the cancellation of claims by the PTO is binding in pending district court infringement litigation.” Fresenius USA, Inc. v. Baxter Int’l, Inc., 2013 U.S. App. LEXIS 13484, at *13 (Fed. Cir. July 2, 2013). The Federal Circuit interpreted the reexamination statute to have a binding effect on concurrent litigation, and thus terminated a pending litigation where the same patent claims were cancelled during reexamination. Id. at *43. Accordingly here, the Federal Circuit held that the PTO’s invalidity decisions trump the prior district court ruling.