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Amgen boosted by EPO hearing

Shares of Transkaryotic Therapies (TKTX) closed Wednesday at $53, down $25.125 (32 percent) on the week, after a U.S. District Court judge adopted modified versions of Amgen's definitions of four patent claim terms related to AGMN's erythropoietin patent infringement suit against TKTX and partner Aventis Pharmaceuticals.

Judge William

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