Westinghouse Electric & Mfg. Co. v. Formica Insulation Co.

DENISON, Circuit Judge.

The appellant brought in the District Court the usual infringement suit upon claims II and 12 of patent No. 1,284,432, issued November 12, 1918, to O’Connor, on .an application filed February 1, 1913, covering a process for making composite materials. The two claims are alike, save that claim 12 calls for “a phenolic condensation product,” while claim 11 more broadly reaches in the same association any suitable adhesive substance. Claim 12 is given in the margin.1

In the court below the defenses were that these claims were invalid, or that, if valid, they must be so…