Legal Opinion
Seagen Inc. v. Daiichi Sankyo Company, Ltd.
Court of Appeals for the Federal Circuit
Decided December 2, 2025No. 23-2424Published
1Opinion of the Court
Case: 23-2424 Document: 72 Page: 1 Filed: 12/02/2025 United States Court of Appeals for the Federal Circuit ______________________ SEAGEN INC., Plaintiff-Appellee v. DAIICHI SANKYO COMPANY, LTD., ASTRAZENECA PHARMACEUTICALS LP, ASTRAZENECA UK LTD., Defendants-Appellants ______________________ 2023-2424, 2024-1176 ______________________ Appeals from the United States District Court for the Eastern District of Texas in No. 2:20-cv-00337-JRG, Judge J. Rodney Gilstrap. ______________________ Decided: December 2, 2025 ______________________ SARA TONNIES HORTON, Willkie Farr & Gallagher LLP,…
2Cases cited16 opinions
- 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
- Application of Heinrich Ruschig, Walter Aumuller, Gerhard Korger, Hans Wagner, Josef Scholz and Alfred BanderCourt of Customs and Patent Appeals · 1967
- Power-One, Inc. v. Artesyn Technologies, Inc.Court of Appeals for the Federal Circuit · 2010
- Walter C. Fiers v. Michel Revel and Pierre Tiollais v. Haruo Sugano, Masami Muramatsu and Tadatsugu TaniguchiCourt of Appeals for the Federal Circuit · 1993
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