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Patent Trial and Appeal Board Doctrine of Equivalents Prosecution History Estoppel

Knobbe Martens

Federal Circuit Review | July 2025

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In Janssen Pharmaceuticals, Inc. v. Teva Pharmaceuticals USA, Inc., Appeal No. 25-1228, The Federal Circuit found that claims reciting a dosing regimen with unequal loading doses were not obvious and that a presumption of...more

Akin Gump Strauss Hauer & Feld LLP

Cancellation of Independent Claims in IPR Does Not Estop Doctrine of Equivalents Arguments for Surviving Dependent Claims

A judge in the Eastern District of Virginia recently held that cancellation of independent claims in an inter partes review (IPR) did not preclude the plaintiff from asserting infringement based on the doctrine of equivalents...more

Knobbe Martens

Federal Circuit Review - June 2019

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One-year Clock for Filing IPR Petition Applies to Litigants and Parties that Become Privies of the Litigant Prior to Institution. In Power Integrations, Inc v. Semiconductor Components, Appeal No. 2018-1607, the Federal...more

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