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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 enzyme patent, arguing the claims lack adequate written description and enablement. The reply emphasizes functional language and the impossibility of testing the claimed 1,059+ PH20 variants.
Outcome / Ruling
Verdict Document PDF URL
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