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Patent
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Petitioner / Claimant (Plaintiff)
Merck Sharp & Dohme LLC
Respondent / Defendant
Surrozen Operating, Inc. et al.
Dispute Summary
Merck has filed a post‑grant review petition challenging U.S. Patent 12,297,278 covering broad tetravalent Wnt‑surrogate antibodies. The petition asserts lack of written description, enablement, indefiniteness, and anticipation by the Garcia publication.
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