Form 8-K ENANTA PHARMACEUTICALS For: Jun 23

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Enanta Pharma loses appeal in Pfizer Paxlovid patent case

June 23, 2026 5:30 PM EDT

Enanta Pharmaceuticals (NASDAQ: ENTA) lost its patent infringement appeal against Pfizer Inc. after the United States Court of Appeals for the Federal Circuit ruled on June 23, 2026, that the claims of U.S. Patent No. 11,358,953 were invalid.

The Federal Circuit's decision affirmed a December... More