Court of Appeals for the Federal Circuit November 25, 2002, No. 02-1163 (K&K Jump Start/Chargers, Inc. v. Schumacher Electric Corp.)

CLEVENGER, Circuit Judge.

In this action for patent infringement, plaintiffs K&K Jump Start/Chargers, Inc., and Bonnet Enterprises (collectively “K&K”) sued defendant Schumacher Electric Corporation (“Schumacher”) for infringement of U.S. Patent No. 5,183,407 (“the ’407 patent”). Schumacher asserted that the patent was invalid under 35 U.S.C.