Fresenius USA, Inc. v. Baxter Int'l, Inc., No. 12-1334 (Fed. Cir. 2013)Annotate this Case
In 2003, Fresenius, a manufacturer of hemodialysis machines sought declaratory judgments of invalidity and non-infringement with respect to Baxter’s 434 patent, covering a dialysis machine with an integrated touch screen interface. Baxter counterclaimed for infringement. The Federal Circuit affirmed a determination that the claims at issue were not invalid, but remanded for reconsideration of an injunction and post-verdict damages. While the appeal was pending, the United States Patent and Trademark Office completed reexamination of the patent and determined that all asserted claims were invalid. The Federal Circuit affirmed. Meanwhile the district court entered judgment against Fresenius in the infringement proceedings. The Federal Circuit vacated; in light of the cancellation of the asserted claims and the fact that the infringement suit remains pending, Baxter no longer has a cause of action.