Court of Appeals for the Federal Circuit September 12, 2003, 02-1372, 02-1395, 02-1465 (Hewlett-Packard Company, Plaintiff-Cross v. Mustek Systems, Inc. And Mustek, Inc.)

Opinion for the court filed by Circuit Judge DYK. Dissenting opinion filed by Circuit Judge MAYER.

DYK, Circuit Judge.

Mustek Systems, Inc. and Mustek, Inc. (collectively “Mustek” or “appellants”) ap*1317peal the judgment of literal infringement of claims 1, 4, and 7-9 of United States Patent No. 5,836,878 (“the '878 patent”). Hewlett-Packard Co. v. Mustek Sys., Inc., No. 99-CV-0351, slip op.