Hewlett-Packard v. Mustek Systems

Opinion for the court filed by Circuit Judge DYK. Dissenting opinion filed by Chief Judge MAYER. Mustek Systems, Inc. and Mustek, Inc. (collectively ""Mustek"" or ""appellants"") appeal the judgment of literal infringement of claims 1, 4, and 7-9 of United States Patent No. 5,336,878 (""the `878 patent""). Hewlett-Packard Co. v. Mustek Sys., Inc., No. 99-CV-0351, slip op. at 13-18 (S.D. Cal. Apr. 26, 2002) (""Order Re: Post-Trial Motions""). Hewlett-Packard Co. (""Hewlett"" or ""appellee"") cross-appeals the judgment of invalidity under 35 U.S.C. § 102 of claim 1 and under 35 U.S.C. § 103 of claims 1-8 of United States Patent No. 4,837,635 (""the `635 patent""). Id. at 5-10. On the main appeal, we vacate the judgment of infringement of the asserted claims of the `878 patent. On the cross appeal, we affirm the judgment of invalidity of the asserted claims of the `635 patent.