Welcome to the Big Molecule Watch!

Big Molecule Watch will be posting updates and analyses on regulatory issues, litigation, legislation, and other news in the ever-developing world of biosimilars. The editors of this blog have collectively been watching and engaging with the world of biosimilars (“big molecules”) since before the inception of the biosimilar industry in the U.S., and we’re excited to share the observations of our active watch on this new forum.

If you’re looking for a primer on biologics, check out our background post introducing the world of biologics, biosimilars, and the Biologics Price Competition and Innovation Act (“BPCIA”).

We’ve also collected (and will continue to update) some reference documents that might be of interest to visitors of this blog—you can find them under the “Links” section to the right of this page.

Boehringer Ingelheim Announces Positive Phase III Results for Its Adalimumab Biosimilar

On September 12, 2018, Boehringer Ingelheim announced positive results from a Phase III clinical trial for its approved adalimumab biosimilar, Cyltezo®. The clinical trial compared the efficacy, safety and immunogenicity of Cyltezo® and Humira® in patients with moderate-to-severe chronic plaque psoriasis.  According to Boehringer Ingelheim, the study confirmed equivalence of Cyltezo®…

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Federal Circuit Solicits U.S. Attorney General’s Views on Constitutionality of Subjecting Pre-AIA Patents to Inter Partes Review

Genentech recently submitted two opening appellate briefs to the Federal Circuit in connection with its appeals from the Board’s final written decisions in Hospira’s IPRs, IPR2016-01771 and IPR2016-01837, which found that the challenged claims of U.S. Patent Nos. 7,622,115 and 7,807,799, respectively, were unpatentable in view of the prior art….

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Mylan Files Ten Additional IPR Petitions Challenging Sanofi's Lantus Patents

As we reported here, on June 9, 2017, Mylan filed two IPR petitions challenging Sanofi-Aventis’s U.S. Patent No. 7,476,652 (IPR2017-01528) and U.S. Patent No. 7,713,930 (IPR2017-01526), related to Sanofi’s Lantus® (insulin glargine injection).  Both petitions were instituted on December 13, 2017, as reported here. On September 10, 2018, Mylan filed ten additional…

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Sandoz Stipulates to Infringement of Certain Asserted Claims Prior to Etanercept Biosimilar Trial

As we have previously reported, the Immunex v. Sandoz patent litigation under the BPCIA concerning Sandoz’s Erelzi™ (etanercept-szzs) biosimilar is scheduled to begin trial today before New Jersey District Judge Claire C. Cecchi. Yesterday, prior to the start of trial, the Court entered a stipulation wherein Sandoz stipulated to infringement of…

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Xbrane Shifts Strategic Focus to Biosimilars

Today, September 10, 2018, Xbrane Biopharma announced that it has decided to shift its strategic focus of capital and resources toward biosimilars and away from its pipeline of generic long-acting injectables.  In addition to moving forward with its pivotal clinical trial for Xlucane, its proposed biosimilar of Lucentis® (ranibizumab), Xbrane…

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Biologic and Biosimilar Litigation Updates

Below we provide updates in three pending litigations. First, in an update on the Amgen v. Coherus appeal regarding Coherus’s biosimilar application for pegfilgrastim, Amgen filed its opening brief on August 20. Amgen’s statement of the issues reads: 1. Whether the district court erred in dismissing Amgen’s Complaint, with prejudice, based…

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New BPCIA Complaint: Genentech Sues Samsung Bioepis Regarding Proposed Trastuzumab Biosimilar (UPDATED)

Yesterday, September 4, 2018, Genentech filed a complaint against Samsung Bioepis in the District of Delaware alleging infringement under the BPCIA of 21 patents based on Bioepis’s filing of an aBLA for SB3, a biosimilar candidate referencing Herceptin® (trastuzumab).  This is the fourth litigation regarding a biosimilar of Herceptin®, following…

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Biosimilar and Biologic Development Updates

On Wednesday, Celltrion announced its completion of its Phase 3 clinical trial for Remsima SC, a subcutaneous version of its biosimilar Remsima® (infliximab).  According to Celltrion, “[t]he subcutaneous formulation allows patients to conveniently inject it by themselves according to the administration cycle unlike the intravenous formulation that require patients to…

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Litigation Update:  Sanofi’s Summary Judgment Motion Denied, Immunex Renews Its Motion to Stay Pending IPR in DUPIXENT Patent Litigation

Following up on our previous coverage of Immunex’s patent infringement suit against Sanofi related to Immunex’s Dupixent® (dupilumab) biologic, Judge Otero recently denied Sanofi’s motion for summary judgement of invalidity based on indefiniteness of the claim terms “competes” and “binding affinity (Ka).” Sanofi criticized Immunex’s ’487 patent for failing to…

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