As we have previously reported, a group of health insurers and health insurance administrators (collectively, “CareFirst”) filed a class action complaint in 2023 against Johnson & Johnson and Janssen Biotech, Inc. (collectively, J&J), alleging multiple violations of federal and state antitrust laws arising from J&J’s STELARA® (utsekinumab) product, as well…
On November 12, 2025, Regeneron filed a Motion to Strike Certain Affirmative Defenses and Dismiss Certain Counterclaims against Amgen in the aflibercept patent litigation in the U.S. District Court for the Northern District of West Virginia. The dispute centers on Amgen’s aflibercept biosimilar, PAVBLU®. As we have previously reported, in…
In a new draft guidance, issued on October 29, 2025, the FDA proposed major updates to simplify biosimilarity studies and potentially reduce clinical testing for therapeutic protein products. The guidance, “Scientific Considerations in Demonstrating Biosimilarity to a Reference Product: Updated Recommendations for Assessing the Need for Comparative Efficacy Studies Guidance…
As we previously reported, on June 17, 2025, Regeneron filed a complaint against Amgen under the BPCIA, alleging that Amgen’s aflibercept biosimilar, PAVBLU, infringes U.S. Patent No. 12,331,099 (“the ’099 patent”). The ‘099 patent issued on June 17, 2025, almost eight months after Amgen announced the launch of PAVBLU on…
In the past month, President Trump signed two executive orders concerning drug access and affordability, including for biologics and biosimilar drugs. On April 15, 2025, President Trump signed Executive Order No. 14273 (“EO 273”), titled “Lowering Drug Prices By Once Again Putting Americans First.” Then, on May 12, 2025, President…
As 2024 has come and passed, we saw another year of significant developments in litigation involving biologics and biosimilars. The following is a recap of the top four legal developments that we covered on the Big Molecule Watch last year. The Aflibercept BPCIA Litigations Continue Into 2025 As was the…
On August 26, 2024, Regeneron filed a BPCIA complaint in the District Court for the District of New Jersey against Sandoz Inc. related to Sandoz’s ENVEEZU (aflibercept-abzv). This is the fifth BPCIA litigation regarding aflibercept, following Regeneron’s litigations against Biocon/Mylan, Samsung Bioepis, and Formycon, and Amgen, which have been consolidated…
In a sealed order that issued last week, the Court has granted a preliminary injunction against Samsung Bioepis in the aflibercept BPCIA litigation brought by Regeneron. Regeneron had limited its preliminary injunction motion to a single patent, U.S. Patent No. 11,084,865 (“’865 patent”), generally directed to an ophthalmic formulation with…
In a sealed order that issued on June 11, the Court granted a permanent injunction in favor of Regeneron against Mylan/Biocon in the pending aflibercept BPCIA litigation. The Court’s ruling on the permanent injunction follows a nine-day bench trial, held in June 2023, after which the Court held on December…
On October 5, Celltrion Healthcare Co. announced that it has signed a contract with Ventegra, a major U.S. Medical Benefits Manager (MBM) “who administers pharmacy benefits through its Pharmacy Services Administration (PSA) model that has been effectively displacing traditional PBM’s.” According to the press release, YUFLYMA (adalimumab-aaty) will be a…