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Patent Invalidity Collateral Estoppel Motion to Dismiss

Jenner & Block

Inter Partes Review Invalidity Finding Does Not Collaterally Estopell Assertion of Unchallenged Claims in Same Patent

Jenner & Block on

In a February 10, 2025 order, the Federal Circuit Court of Appeals rejected the application of the collateral estoppel doctrine to patent claims asserted in a district court infringement action where other claims in the same...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: PTAB Decision of Invalidity Cannot Estop District Court Litigation on Different Claims from the Same Patent, Even...

The Federal Circuit recently refused to apply collateral estoppel to claims of a patent asserted in district court litigation based on a Patent Trial and Appeal Board (PTAB) decision finding similar claims from the same...more

Holland & Knight LLP

SDNY: Collateral Estoppel Halts Social Media Patent Case

Holland & Knight LLP on

In late 2018, Plaintiff NetSoc sued Chegg in the U.S. District Court for the Southern District of New York (SDNY), alleging infringement of a patent directed to "establishing and using a social network to facilitate people in...more

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