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Case Lawsuit Title
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Case / Trial ID Number
Jurisdiction Code
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Category
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Patent
Trademark
Copyright
Design
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 PH20 enzyme patent, asserting the claims lack adequate written description and enablement. The reply emphasizes the breadth of the claimed genus and the impossibility of testing all variants.
Outcome / Ruling
Verdict Document PDF URL
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