Legal Opinion
Enanta Pharmaceuticals, Inc. v. Pfizer Inc.
Court of Appeals for the Federal Circuit
Decided June 23, 2026No. 25-1427Published
1Opinion of the Court
Case: 25-1427 Document: 42 Page: 1 Filed: 06/23/2026 United States Court of Appeals for the Federal Circuit ______________________ ENANTA PHARMACEUTICALS, INC., Plaintiff-Appellant v. PFIZER INC., Defendant-Appellee ______________________ 2025-1427 ______________________ Appeal from the United States District Court for the District of Massachusetts in No. 1:22-cv-10967-DJC, Judge Denise J. Casper. ______________________ Decided: June 23, 2026 ______________________ BARBARA A. FIACCO, Foley Hoag LLP, Boston, MA, ar- gued for plaintiff-appellant. Also represented by SPENSER ANGEL, TAYLOR ROSS…
2Cases cited12 opinions
- Santiago-Ramos v. Centennial P.R. Wireless Corp.Court of Appeals for the First Circuit · 2000
- Ariad Pharmaceuticals, Inc. v. Eli Lilly and Co.Court of Appeals for the Federal Circuit · 2010
- Lawrence B. Lockwood v. American Airlines, Inc.Court of Appeals for the Federal Circuit · 1997
- Novo Industries, L.P., Plaintiff-Cross v. Micro Molds Corporation, and Oscar HelverCourt of Appeals for the Federal Circuit · 2003
- Application of Heinrich Ruschig, Walter Aumuller, Gerhard Korger, Hans Wagner, Josef Scholz and Alfred BanderCourt of Customs and Patent Appeals · 1967
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