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.

Supreme Court Narrows Scope of Judicial Review before the PTAB

The Supreme Court yesterday narrowed the scope of judicial review of proceedings before the Patent Trial and Appeal Board (PTAB) in Thryv, Inc. v. Click-to-Call Technologies, LP.  Thryv had petitioned the PTAB to institute an IPR of Click-to-Call‘s patent.  Thryv’s predecessor had been sued on that patent more than one…

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Samsung Bioepis and Merck Announce U.S. Launch of Trastuzumab Biosimilar

On Wednesday, Samsung Bioepis and Merck announced the U.S. launch of Ontruzant® (trastuzumab-dttb), a biosimilar to Herceptin® (trastuzumab).  Ontruzant® is indicated for the treatment of HER2-overexpressing breast cancer, and HER2-overexpressing metastatic gastric or gastroesophageal junction adenocarcinoma, and is available in both 150 mg single-dose vials and 420 mg multiple-dose vials. …

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Biosimilar Market Updates

Shanghai Henlius biosimilar antibody developments On March 9, 2020, Shanghai Henlius Biotech, Inc. announced that its investigational new drug application has been accepted by China’s National Medical Products Administration (NMPA) for HLX14, a biosimililar to Amgen’s PROLIA (denosumab).  According to the press release, HLX14 is indicated for the treatment of…

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Rituximab Biosimilar Updates from Europe

Mabion We previously reported last month that applications for initial marketing authorization for two rituximab biosimilars were withdrawn from the European Medicines Agency (EMA), according to the Committee for Medicinal Products for Human Use (CHMP).  In particular, the EMA reported that these applications were withdrawn after the agency had evaluated…

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Partnership Updates

COVID-19 Delays Proposed Combination of Mylan and Upjohn Mylan N.V. and Pfizer Inc. have announced that unprecedented circumstances surrounding the COVID-19 pandemic will delay the proposed integration of Mylan and Upjohn, a division of Pfizer.  As we previously reported, Mylan and Upjohn, Pfizer’s off-patent branded and generic business, will combine…

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