Utica Enterprises v. Federal Broach and Machine (Fed. Cir. Aug. 19, 2004) (nonpublished opinion).
Utica sued Federal Broach for infringement of its patented metal finishing process, known as “broaching.” (U.S. Patent No 6,256,857). After construing the claims in a Markman hearing, the Michigan district court entered summary judgment of non-infringement for Federal Broach.
Utica appealed the judgment, arguing incorrect claim construction. The Federal Circuit (LOURIE, J) held that the court unduly limited claim terms, and thus vacated and remanded. Mayer, CJ, dissented without opinion.