Tag Archives: IPR estoppel

Texas Court Finds IPR Estoppel Extends To Grounds That Could Have Been Raised In Joinder Petition

U.S. patent law provides that any patent challenger initiating an inter partes review (IPR) proceeding at the United States Patent & Trademark Office (PTO) “may not assert” an invalidity ground in a patent case in U.S. district court or in the U.S. International Trade Commission that it “raised or reasonably could have raised during that inter partes review.”  Despite … Continue Reading

The Pendulum Continues To Swing On The Scope Of IPR Estoppel

The America Invents Act of 2011, which ushered in a new regime for post-grant patent challenges at the U.S. Patent and Trademark Office (PTO), provides that any patent challenger initiating an inter partes review (IPR) proceeding at the PTO “may not assert” an invalidity ground in a patent case in U.S. district court or in the U.S. … Continue Reading

Illinois District Court Continues Trend Toward Broader Interpretation of IPR-Estoppel

The America Invents Act of 2011, which ushered in a new regime for post-grant patent challenges at the U.S. Patent and Trademark Office (PTO), provides that any patent challenger initiating an inter partes review (IPR) proceeding at the PTO “may not assert” an invalidity ground in a patent case in U.S. district court or in … Continue Reading
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