On October 29, 2025, the FDA released a new draft guidance “Scientific Considerations in Demonstrating Biosimilarity to a Reference Product: Updated Recommendations for Assessing the Need for Comparative Efficacy Studies”...more
11/10/2025
/ Biosimilars ,
Clinical Trials ,
Draft Guidance ,
Drug Pricing ,
Expedited Actions Process ,
Food and Drug Administration (FDA) ,
Pharmaceutical Industry ,
Prescription Drugs ,
Proposed Guidance ,
Regulatory Requirements ,
Research and Development
On October 20, 2025, Celltrion and Regeneron announced they reached a settlement agreement, dismissing Case Nos. 1-23-cv-00089 (N.D.W. Va.) and 1-24-cv-00053 (N.D.W. Va.) / MDL 1:24-md-03103 (N.D.W. Va.) and allowing the...more
On October 2, 2025, Celltrion launched Avtozma® (tocilizumab-anoh), in intravenous and subcutaneous formulations, as the third biosimilar of Genentech’s Actemra® (tocilizumab). ...more
On October 9, 2025, Celltrion announced the FDA approved Eydenzelt® (aflibercept-boav), a biosimilar of Regeneron’s EYLEA® (aflibercept). ...more
On September 18, 2025, the Patent Trial and Appeal Board (“Board”) issued a Final Written Decision (“FWD”) in Merck’s IPR2024-00625 against The Johns Hopkins University’s (“JHU”) U.S. Patent No. 11,339,219 B2 (“the ’219...more
Beginning in November 2024, Merck Sharp & Dohme, LLC (“Merck”) requested post-grant review (“PGR”) of 14 patents owned by Halozyme, Inc. (“Halozyme”), with claims directed to modified PH20 hyaluronidase polypeptides,...more
On October 1, 2025, the FDA approved Gedeon Richter / Hikma’s Enoby™ / Xtrenbo™ (denosumab-qbde), biosimilars of Amgen’s Prolia® / Xgeva® (denosumab). ...more
On August 18, 2025, Accord and Dong-A ST announced the U.S. launch of Imuldosa® (ustekinumab-srlf), a biosimilar of Janssen / Johnson & Johnson’s Stelara® (ustekinumab). Imuldosa® is approved for all the reference product’s...more
Pegfilgrastim Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
8/13/2025
/ Amgen ,
Biosimilars ,
Coherus ,
Intellectual Property Protection ,
Inter Partes Review (IPR) Proceeding ,
Life Sciences ,
Mylan Pharmaceuticals ,
Patent Infringement ,
Patent Litigation ,
Patent Trial and Appeal Board ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs ,
Sandoz
Adalimumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
8/12/2025
/ AbbVie ,
Amgen ,
Biosimilars ,
Boehringer ,
Coherus ,
Inter Partes Review (IPR) Proceeding ,
Patent Infringement ,
Patent Litigation ,
Patent Trial and Appeal Board ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs
On July 15, 2025, the FDA approved Biocon’s Kirsty™ (insulin aspart-xjhz) as the first interchangeable biosimilar of Novo Nordisk’s NovoLog® (insulin aspart). ...more
Pegfilgrastim Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
7/15/2025
/ Biosimilars ,
Drug Pricing ,
FDA Approval ,
Generic Drugs ,
Inter Partes Review (IPR) Proceeding ,
Patent Invalidity ,
Patent Litigation ,
Patents ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs
Denosumab Challenged Claim Types in Litigation: Claims are counted in each litigation, so claims from the same patent challenged in multiple litigations are counted more than once. Within each litigation a claim is counted...more
7/15/2025
/ Biosimilars ,
FDA Approval ,
Inter Partes Review (IPR) Proceeding ,
Litigation Strategies ,
Patent Infringement ,
Patent Invalidity ,
Patent Litigation ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs ,
Regulatory Requirements
Trastuzumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
Adalimumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
On June 2, 2025, Sandoz announced the launch of Jubbonti® / Wyost® (denosumab-bbdz), the first Prolia® / Xgeva® (denosumab) interchangeable biosimilars to launch in the U.S....more
6/12/2025
/ Amgen ,
Biosimilars ,
Food and Drug Administration (FDA) ,
Generic Drugs ,
Interchangeability ,
Patent Litigation ,
Patents ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs ,
Sandoz ,
Settlement Agreements
In May 2025, the FDA approved numerous biosimilars as interchangeable with Stelara® (ustekinumab) and Humira® (adalimumab), bringing the total number of Stelara® interchangeables to four, plus an additional biosimilar (Sandoz...more
Pegfilgrastim Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
5/13/2025
/ Biosimilars ,
Generic Drugs ,
Intellectual Property Litigation ,
Inter Partes Review (IPR) Proceeding ,
Patent Infringement ,
Patent Litigation ,
Patent Validity ,
Patents ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs
On April 14, 2025, Celltrion announced that the FDA designated Yuflyma® (adalimumab-aaty) as an interchangeable biosimilar of AbbVie’s Humira® (adalimumab). Yuflyma® is a high-concentration (100mg/mL) citrate-free...more
Trastuzumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
4/18/2025
/ Intellectual Property Litigation ,
Inter Partes Review (IPR) Proceeding ,
Life Sciences ,
Patent Infringement ,
Patent Litigation ,
Patent Validity ,
Patents ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs ,
Prior Art
On April 10, 2025, Biocon announced the FDA approval of Jobevne™ (bevacizumab-nwgd) as the sixth biosimilar of Genentech’s Avastin® (bevacizumab)...more
Insulin Glargine Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more
4/17/2025
/ Biosimilars ,
Generic Drugs ,
Intellectual Property Litigation ,
Inter Partes Review (IPR) Proceeding ,
Patent Infringement ,
Patent Invalidity ,
Patent Litigation ,
Patents ,
Pharmaceutical Industry ,
Pharmaceutical Patents ,
Prescription Drugs ,
Prior Art
On March 3, 2025, Fresenius Kabi and Formycon announced the launch of Otulfi™ (ustekinumab-aauz), a provisionally interchangeable biosimilar of Janssen / Johnson & Johnson’s Stelara® (ustekinumab), subject to the...more
On February 28, 2025, the FDA approved Celltrion’s Stoboclo® / Osenvelt® (denosumab-bmwo) as the third company to receive FDA approval of biosimilars of Amgen’s Prolia® / Xgeva® (denosumab). ...more
3/18/2025
/ Amgen ,
Biosimilars ,
Celltrion ,
FDA Approval ,
Food and Drug Administration (FDA) ,
Life Sciences ,
Patent Litigation ,
Patents ,
Pharmaceutical Industry ,
Prescription Drugs ,
Sandoz
On March 7, 2025, the FDA approved Celltrion’s Omlyclo® (omalizumab-igec), the first interchangeable biosimilar of Genentech’s Xolair® (omalizumab). Omlyclo® was approved for all of Xolair®’s approved indications, including...more