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Disclaimer Not Binding in IPR Proceeding Where Made

In CUPP Computing AS v. Trend Micro Inc., the Federal Circuit held that a disclaimer made in an inter partes review (IPR) proceeding was not binding in that proceeding, i.e., the disclaimer is not binding in the proceeding in...more

Error in Prior Art Did Not Render Invention Obvious

In LG Electronics Inc. v. Immervision, Inc., the Federal Circuit held that an obvious error in a prior art reference was not considered a teaching. The court explained that a person of ordinary skill in the art (POSITA) would...more

Inter Partes Review: Updated Guidance on Use of Applicant Admitted Prior Art

The U.S. Patent and Trademark Office issued updated guidance on acceptable uses of applicant admitted prior art (AAPA) in inter partes review (IPR) proceedings under 35 U.S.C. § 311.1 This guidance replaces the guidance...more

Inter Partes Review May Not Rely Solely on Admitted Prior Art

In Qualcomm Incorporated v. Apple Inc., the Federal Circuit held that applicant admitted prior art (AAPA) may not be the basis of an invalidity ground in an inter partes review (IPR), and therefore, an IPR petition cannot...more

Prior Invention as a Litigation Defense: All Claim Elements Must Be Appreciated

In Ingevity Corporation v. International Trade Commission, the Federal Circuit held that a prior invention will not anticipate under 35 U.S.C. § 102(g) unless the prior inventors appreciated the invention. Specifically, an...more

Supreme Court: Assignor Estoppel Survives, but Only for Explicit or Implicit Representations

In Minerva Surgical, Inc. v. Hologic, Inc., the Supreme Court held, in a 5–4 opinion, that the doctrine of assignor estoppel continues to apply, but only for an assignor’s invalidity assertion that contradicts explicit or...more

Non-Enabled Futuristic Engine Could Not Invalidate Claimed Turbine Engine

In Raytheon Technologies Corporation v. General Electric Company, the Federal Circuit held that the Patent Trial and Appeal Board (Board) incorrectly invalidated a Raytheon turbine engine patent as obvious based on a...more

Invalidity Challenges May Star Simple Words–Reading of ‘Command Function’ Doomed Obviousness Dispute

In Comcast Cable Communications, LLC v. Promptu Systems Corp., the Federal Circuit held that the plain meaning of the claim phrase “command function” was limited to functions that command an action to be taken. The meaning of...more

Patent Held Invalid—Specification Disclaimer Prevented Claim to Earlier Priority Date

In Akeva L.L.C., v. Nike, Inc., the Federal Circuit held that a disclaimer in a specification that excluded a particular embodiment prevented later claims in the continuation patents from claiming the excluded embodiment,...more

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