Chevron U.S.A. Inc. v. University of Wyoming Research Corp., No. 19-1530 (Fed. Cir. 2020)
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The University of Wyoming’s 425 patent is directed to a procedure whereby solvents of increasing strength are successively passed over asphaltenes that have been segregated in a packed column from a hydrocarbon such as oil and amounts of asphaltenes dissolved and eluted from the column by the various solvents yield information about the oil. Chevron was also studying the analysis of asphaltene impurities in crude oil. Wyoming initiated an interference by copying into its pending application claims from a pending Chevron application.
The Patent Trial and Appeal Board held that Wyoming’s 425 patent had an adequate written description for the count limitation and held that Wyoming was entitled to the benefit of the earlier filing dates of two patent applications, Because Chevron had filed a Priority Statement that indicated its earliest corroborated conception coupled with diligence date was March 1, 2009, the Board determined that Chevron was unable to prevail on priority and assigned Wyoming status as the senior party and entered judgment in its favor in the interference. The Federal Circuit affirmed, upholding the Board’s constructions of the limitation “gradually and continuously changing the alkane mobile phase solvent to a final mobile phase solvent.”
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