Cover v. Chicago Eye Shield Co.

SPARKS, Circuit Judge.

Cover charged the Chicago Eye Shield Company with infringement of six United States patents of which he was the owner and patentee. The patent numbers, with the several dates of application and issue, and the claims involved, are in the margin1 and they will be separately referred to hereafter by the last two digits of their respective numbers. The answer was invalidity and non-infringement.

The court held that claim 4 of No. 95 was invalid; that claim 2 of No. 30 was infringed but invalid on account of anticipation by prior use; that claim 3 of No. 30 and claims 2 and 3…