Tagged as: PGR

PTAB Issues Final Written Decision Finding Seagen Antibody-Drug Conjugate Patent Claims to be Unpatentable

On January 16, 2024, the Patent Trial and Appeal Board (PTAB) of the United States Patent and Trademark Office issued a Final Written Decision in a post-grant review (PGR) (PGR2021-00030) of claims in US Patent No. 10,808,039 (“the ’039 patent”) owned by Seagen. The PGR, filed by Daiichi Sankyo, Inc….

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Proposed USPTO Fee Changes Could Impact PGR and IPR Filing Strategies Used by Biosimilars

The USPTO has proposed several fee changes for implementation in 2025. If implemented, these changes will increase filing fees for Inter Partes Reviews (IPRs) and Post Grant Reviews (PGRs) by 25% “to improve cost recovery.” Additionally, the PTO is proposing to allow IPR and PGR petitions to exceed the current…

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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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