National Brass Co. v. Michigan Hardware Co.

STARR, District Judge.

Plaintiff corporation is assignee of patent No. 1,871,633 issued August 16, 1932, to Herman Ter Meer for a spring-bolt type ■of door latch. On November 13, 1945, plaintiff filed complaint, alleging that defendant had infringed said patent and asking for an injunction against further infringement and an accounting for profits and damages. Defendant answered, claiming that the patent was invalid and denying infringement. In support of its claim of invalidity on the ground of prior art anticipation, defendant cited the following patents: McGrath et al. No. 373,993, November…