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Patent
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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 12,104,185 covering modified PH20 hyaluronidase proteins. The petition argues the claims are overly broad, lack written description and enablement, and are obvious in view of prior art. The case is pending institution.
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