Biogen Idec Inc. and Genentech, Inc. (collectively, "Biogen") seek review of the district court's construction of the disputed claim term "anti-CD20 antibody" that narrowed the term based on prosecution history disclaimer. Under that construction, Biogen stipulated that it could not prove infringement by GlaxoSmithKline LLC and Glaxo Group Ltd. (collectively, "GSK"). Biogen took that approach in order...
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