Enanta Pharmaceuticals Files European Patent Infringement Suit Against Pfizer Over COVID-19 Antiviral

Reuters
08/20
Enanta Pharmaceuticals Files European Patent Infringement Suit Against Pfizer Over COVID-19 Antiviral

Enanta Pharmaceuticals has announced the filing of a patent infringement suit against Pfizer in the Unified Patent Court of the European Union. The suit concerns the alleged infringement of European Patent No. EP 4 051 265, which involves coronavirus protease inhibitors. Enanta is seeking a determination of liability related to the manufacture, use, and sale of Pfizer's COVID-19 antiviral, Paxlovid. The patent is the European counterpart of a U.S. patent involved in ongoing litigation between the two companies. A hearing in the UPC is expected to take place within 12 months, with a decision to follow shortly thereafter.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Enanta Pharmaceuticals Inc. published the original content used to generate this news brief via Business Wire (Ref. ID: 20250820282912) on August 20, 2025, and is solely responsible for the information contained therein.

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