Medical Care Holdings, Inc. (collectively “Fresenius”) appeal and Defendants Baxter International, Inc. and Baxter Healthcare Corporation (collectively “Baxter”) cross appeal from the final judgment of the United States District Court for the District of California, which was based on findings that Fresenius infringed claims of three patents asserted by Baxter—U.S. Patent Nos. 5,247,434 (“the ’434 patent”), 5,744,027 (“the ’027 patent”), and 6,284,131 (“the ’131 patent”)—all of which disclose and claim a hemodialysis machine integrated with a touch screen user interface. Fresenius Med. Care Holdings, Inc. v. Baxter Int’l, Inc., No. 03-CV-1431 (N.D. Cal. Feb. 12, 2007) (“JMOL Opinion”). We affirm in part, reverse in part, vacate in part, and remand for further proceedings consistent with this opinion.