Court of Appeals for the Federal Circuit April 8, 1999, 98-1171 (Signtech Usa, Ltd. v. Vutek, Inc.)

RADER, Circuit Judge.

Signtech USA, Ltd. (Signtech) sued Vu-tek, Inc. (Vutek) for infringement of its U.S. Patent No. 5,376,957 (the ’957 patent) involving inkjet printers for printing large signs. Vutek counterclaimed for infringement of its U.S. Patent No. 4,914,522 (the ’522 patent).