For the second time, a biosimilar sponsor is seeking a declaratory judgment that it is not infringing Genentech Inc. patents. This time around, Celltrion Inc. and partner Teva Pharmaceuticals USA Inc. are trying to obtain a ruling they do not infringe patents covering Genentech's Herceptin (trastuzumab) and Rituxan (rituximab).
Celltrion and Teva filed a pair of complaints against Genentech on Jan. 11 in the US District Court for the...






