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Patent
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Filing Date
Decision Verdict Date
Court / Tribunal
Bench / Panel Judges
Petitioner / Claimant (Plaintiff)
Merck Sharp & Dohme LLC
Respondent / Defendant
Halozyme, Inc. et al.
Dispute Summary
Merck has filed a Post‑Grant Review petition challenging Halozyme’s U.S. Patent 12,123,035 covering PH20 hyaluronidase mutants. The petition asserts lack of written description, lack of enablement, and obviousness of the claims. The Board has yet to decide whether to institute the trial.
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