MEMC Electronic Materials, Inc. v. Mitsubishi Materials Silicon Corp.

SCHALL, Circuit Judge.

MEMC Electronic Materials, Inc. (“MEMC”) is the assignee of record of U.S. Patent No. 5,919,302 (the “ ’302 patent”). It brought suit in the United States District Court for the Northern District of California against Mitsubishi Materials Silicon Corporation, Mitsubishi Silicon America Corporation, Sumitomo Mitsubishi Silicon Corporation (“SUMCO Corp.”), Sumco USA Corporation (“SUM-CO USA”), and Sumco USA Sales Corporation (“SUMCO USA Sales”) (collectively, “defendants” or “SUMCO”). In its suit, MEMC alleged direct infringement of the ’302 patent under 35 U.S.C. § 271(a)…