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Patent Applications Patent Invalidity Patent Validity

McCarter & English, LLP

Navigating the Landscape of Patent Challenges at the USPTO

Challengers striving to beat higher-ranked opponents at the US Open tennis tournament happening now in New York are not the only challengers facing tricky new situations. Parties wishing to challenge the validity of US...more

Morgan Lewis

Patent Interferences

Morgan Lewis on

A patent interference is an inter partes proceeding to determine which party was the first to invent commonly claimed subject matter. An interference is also a viable procedure for challenging the validity of an issued patent...more

Mintz - Intellectual Property Viewpoints

Doctrine of Assignor Estoppel to be Reviewed by U.S. Supreme Court

On January 8, 2021, the U.S. Supreme Court agreed to hear a case calling for it to abolish or limit the doctrine of assignor estoppel. See Minerva Surgical, Inc. v. Hologic, Inc., et al., No. 20-440, 2021 WL 77248 (U.S. Jan....more

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