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Patent
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Petitioner / Claimant (Plaintiff)
Halozyme, Inc.
Respondent / Defendant
Alteogen Inc.
Dispute Summary
Halozyme has filed an IPR petition seeking cancellation of all 15 claims of Alteogen’s 2025 ‘638 patent covering a temperature‑shift method for producing recombinant hyaluronidase PH20. The petition relies on obviousness over prior art Wei and Zmuda, with a second ground adding Wei 2013.
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