Context:
- In August 2021, the University of Washington (UW) and its exclusive licensee TwinStrand Biosciences filed a complaint in the United States District Court for the District of Delaware, accusing Guardant Health of infringing several patents describing duplex sequencing methods.
- Guardant filed several petitions with the U.S. Patent and Trademark Office (USPTO) Patent Trial and Appeal Board (PTAB) for inter partes review (IPR) of the asserted patents.
- Recently, final judgment was entered in the district court case, finding willful infringement of remaining asserted claims and ordering Guardant to pay the plaintiffs $245.2 million in total damages, accrued royalties, and interest (August 24, 2026 ip fray article).
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Board & counsel
Panel: Administrative Patent Judge Sheridan K. Snedden, Administrative Patent Judge Zhenyu Yang, and Administrative Patent Judge Timothy G. Majors.
Guardant is represented by Wilson Sonsini’s Michael T. Rosato, Jad A. Mills, Sonja R. Gerrard, and Patrick M. Medley.
UW is represented by Sterne Kessler’s Ralph Wilson Powers III, David H. Holman, Kristina C. Kelly, Christopher M. Gallo, and Byron L. Pickard.