Tag Archives: IPR estoppel

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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