The much-anticipated trial in the biosimilar litigation over Enbrel® has been pushed from April, to June and now to September. Although Amgen ($AMGN) has asserted five patents against Sandoz’s ($NVS) proposed biosimilar, Erelzi®, the focus of the case are the two Roche patents directed to the entanercept protein itself. And yet, a skirmish has erupted related to one of the three other patents, which collectively cover indications for using entanercept to treat psoriasis indications.
Read MoreIn an earlier post, we discussed the pending IPRs filed by Coherus Biosciences against Amgen’s two patents covering its Enbrel® protein (entanercept). Whereas our earlier post summarized Coherus’s argument for why the fusion protein claimed in Amgen’s ‘182 and ‘522 patents should be found obvious by the PTAB, this post will summarize Amgen’s preliminary response.
Read MoreIn February 2016, Amgen brought suit against Sandoz in connection with its proposed biosimilar for Amgen’s Enbrel® blockbuster. The case is on a relatively fast track, currently scheduled to go to trial later this year in April. Some investors have inquired about whether Sandoz has a strong obviousness-type double-patenting invalidity defense for the ‘182 patent.
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