Charles R. Pollard, Jr., D. B. A. Lytron Distributing Company, and Plastoid Corporation v. American Phenolic Corporation

DOBIE, Circuit Judge.

This is an appeal from a decision of the United States District Court for the District of Maryland, 122 F.Supp. 172, holding valid and infringed a patent for a high-frequency transmission cable owned by American Phenolic Corporation (hereinafter called Phenolic). Two questions are raised on this appeal: (1) is the patent in suit valid? and (2) if valid, is it infringed by Plastoid’s product? We hold that the patent is invalid, and, since this is sufficient ground for reversal, we need not consider the question of infringement.

The patent in suit, No. 2,543,696 (hereinafter…