Article: AMGEN PREVAILS OVER TKT, AVENTIS IN EPO PATENT INFRINGEMENT CASE.(Amgen Inc., Transkaryotic Therapies Inc., Aventis Pharma AG)

U.S. District Court of Massachusetts Judge William Young ruled in favor of Amgen Inc. in its three-year patent dispute with Transkaryotic Therapies Inc. and Aventis Pharma AG late Friday, siding with Amgen on eight claims of patent infringement related to three patents.

The patents at issue cover Epogen alfa, Amgen's billion-dollar blockbuster anemia therapeutic, a recombinant form of erythropoietin, a red blood cell production-regulating hormone.

TKT officials, however, said the war is far from over, and vowed to turn the ruling they called "interim" around on appeal.

Analysts call the decision a decisive round for Amgen, and some say the ...

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