Sunoco Partners Marketing v. U.S. Venture, Inc., No. 20-1640 (Fed. Cir. Apr. 29, 2022)

From the Opinion

The passage below is extracted verbatim from the opening of the document. It has not been editorially summarized — consult the full opinion for the court's complete reasoning.

U.S. Venture, Inc. and U.S. Oil Co., Inc. (collectively, “Venture”) appeal the judgment of the Northern District of Illinois that Venture infringed patents owned by Sunoco Partners Marketing & Terminals L.P. (“Sunoco”) . Sunoco cross-appeals. As to Venture’s appeal, we first reverse the district court ’s determination that the experimental -use doctrine insulates a subset of asserted patent claims from the on -sale bar , vacate the infringement judgment as to those claims, and remand for the district court to analyze the second prong of the on-sale bar.