American Anode, Inc. v. Lee-tex Rubber Products Corp.

SPARKS, Circuit Judge.

Plaintiff charged defendant with the infringement of United States patent No. 1,825,736 to Klein and Szegvari, and United States patent No. 1,996,051 to Twiss. The first patent was issued October 6, 1931, on an application filed May 29, 1926. The second patent was issued April 2, 1935, on an application filed February 19, 1931. Both patents are owned by the plaintiff. Claims 1, 16, 18 and 19 of the first patent, and claims 2, 4, 17, 18, 28 and 29 of the second patent were relied upon. The defenses were invalidity and non-infringement. The court found that all the claims…