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U.K. House Of Lords Declares Amgen's Erythropoietin Patent Invalid

Law360 (October 21, 2004, 12:00 AM EDT) -- In yet another twist in one of the most dramatic weeks of the seven-year patent battle between biotech rivals Amgen Inc. and Transkaryotic Therapeutics Inc., the U.K.’s House of Lords has stripped Amgen of the patent covering its blockbuster anemia treatment Erythropoietin (EPO).

Dealing TKT some welcome relief after a setback in the U.S. earlier in the week, the U.K.'s highest court upheld on Thursday the Court of Appeal's decision that TKT and its partner, French drug maker Sanofi-Aventis, did not infringe Amgen's patent and reversed...
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