This case features computer graphics systems such as the type used to animate the Pixar Animation Studios (“Pixar”) movies Toy Story and Wall-E. The United States District Court for the Western District of Wiscon-sin granted summary judgment of non-infringement in favor of defendants ATI Technologies, Inc. (“ATI Inc.”), ATI Technologies ULC (“ATI ULC”), and Advanced Micro Devices, Inc. (“AMD”) (collectively “ATI”) on a number of claims of U.S. Patent No. 6,650,327 (the “’327 patent”). Silicon Graphics, Inc. v. ATI Techs., Inc., No. 06-611, 2008 WL 4200359 (Jan. 30, 2008) (“Summary Judgment Opin-ion”). The District Court concluded that plaintiff Silicon Graphics, Inc., (“Silicon Graphics” or “SGI”) did not create a genuine factual dispute on direct infringement. Id. at *18-20. The trial court also concluded that a license between Silicon Graphics and Microsoft Corp. (the “Mi-crosoft license”) authorized users of Microsoft operating systems to practice the claimed technology. Id. at *21-23. Following its summary judgment ruling, the district court held a jury trial on the validity of the ’327 patent. The jury concluded that certain claims were not proved to be invalid. Silicon Graphics, Inc. v. ATI Techs., Inc., 569 F. Supp. 2d 819 (W.D. Wis. 2008) (“JMOL Opinion”).
Because the district court erroneously construed two of the three contested limitations in the ’327 patent this court vacates the summary judgment on claims with those terms. This court also determines that the district court erred with respect to the effect of the Microsoft license on direct infringement. In all other respects, this court affirms.