Park-Ohio Industries, Inc. And Growth International Industries Corp., and Cross-Appellees v. Letica Corporation, and Cross-Appellant

BAILEY BROWN, Circuit Judge.

Appellants, Park-Ohio Industries, Inc., and its subsidiary Growth International Industries Corp. (“Park-Ohio”), filed this action in the United States District Court for the Eastern District of Michigan, Southern Division, alleging that defendant-appellee Letica Corporation (“Letica”) had infringed Park-Ohio’s patented design for securing plastic lids or closures on plastic pails or buckets used as containers for shipping materials by rail or truck. Letica answered and counterclaimed, alleging invalidity of the patent and noninfringement, and also sought an award…