Knapp-Monarch Company v. Dominion Electric Corporation and Steinmetz & Kelly, Inc.

SWYGERT, Circuit Judge.

This appeal presents for our consideration a situation which in many respects is similar to that presented in Knapp-Monarch Co. v. Casco Products Corp., 342 F.2d 622 (7th Cir.), cert. denied, 382 U.S. 828, 86 S.Ct. 64, 15 L.Ed.2d 73 (1965), in which we affirmed the dismissal of a suit for patent infringement against a manufacturer for lack of proper venue under 28 U.S.C. § 1400(b) and held that a manufacturer’s representative’s infringement was de minimis.

Knapp-Monarch Company is the owner of United States Letters Patent No. 3,-038,269 for a steam and spray iron. It…