Panduit Corporation v. Stahlin Bros. Fibre Works, Inc.

These appeals relate to the alleged infringement of a patent which the trial court had found to be valid and infringed in prior litigation between these par ties. That judgment was affirmed. 298 F.Supp. 435 (W.D.Mich., 1969), aff’d. 430 F.2d 221 (6th Cir. 1970), cert. denied 401 U.S. 939, 91 S.Ct. 932, 28 L.Ed. 2d 218 (1971).

The proceedings resulting in these appeals involved the appellee’s challenge to certain modifications of the appellant’s device made in an effort to avoid the claims of the patent previously found to be valid. The trial court concluded that there was infringement of the…