Tagged as: PTAB

Regeneron’s Disclaimer of Aflibercept Formulation Patent Causes PTAB Denial of Institution of Celltrion PGR

On March 15, 2022, the Patent Trial and Appeal Board (PTAB) denied institution of post-grant review (PGR) proceedings initiated by Celltrion Inc. concerning Regeneron Pharmaceutical’s U.S. Patent No. 10,857,231 (the ’231 Patent) after Regeneron disclaimed the patent.  The ’231 patent has claims directed to formulations of aflibercept, the active ingredient…

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PTAB Institutes Two More IPRs on Tocilizumab Patents Challenged by Fresenius

Earlier this week, the PTAB instituted inter partes review of two patents directed to methods of treating rheumatoid arthritis by subcutaneously administering tocilizumab and devices for subcutaneously administering tocilizumab, respectively.  Fresenius filed petitions for inter partes review of U.S. Patent Nos. 8,580,264 (“the ’264 patent”), owned by Chugai and Roche,…

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Mylan Invalidates Another LANTUS Patent at the PTAB

On March 26, 2021, the PTAB issued its Final Written Decision in Mylan Pharmaceuticals, Inc. v. Sanofi-Aventis Deutschland GMBH, IPR2019-01657, which involved Sanofi’s Patent RE47,614 (“’614 patent”) relating to its LANTUS (insulin glargine) product. The PTAB ruled in favor of Mylan and held all 18 claims invalid for obviousness in view…

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Federal Circuit Affirms PTAB Finding that Rituxan® Biogen Patent is Invalid

As we previously reported, in October 2018, Pfizer persuaded the Patent Trial and Appeal Board (PTAB) that the claims of Biogen’s U.S. Patent No. 8,821,873, directed to a method of treating lymphoma with anti-CD20 antibodies and covering the cancer therapeutic RITUXAN (rituximab), were unpatentable on obviousness grounds. After appealing to…

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Federal Circuit Affirms PTAB Finding that Dupixent® Immunex Patent is Obvious

As previously reported, in February 2019, the Patent Trial and Appeal Board issued final written decisions in two IPR proceedings initiated by Sanofi challenging the U.S. Patent No. 8,679,487 (the ’487 patent) owned by Immunex.  In IPR2017-01884, the Board held that the challenged claims of the ‘487 patent were unpatentable…

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PTAB Issues Final Written Decisions Finding Most Claims of Sanofi’s Lantus Patents Invalid

As we previously reported, Mylan filed a number of IPR petitions challenging a total of seven of Sanofi-Aventis’s patents related to Lantus® (insulin glargine injection).  On May 29, 2020, the PTAB issued Final Written Decisions in eight of Mylan’s pending petitions concerning four patents finding most of the challenged claims…

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