News & Analysis as of

Claim Construction Appeals CAFC

A&O Shearman

Federal Circuit Affirms Patent Invalidity, Emphasizes Need For Substantive Expert Testimony

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On August 19, 2025, the U.S. Court of Appeals for the Federal Circuit issued an opinion affirming the U.S. District Court for the Eastern District of Louisiana’s grant of summary judgment that claims of Wilco Marsh Buggies &...more

Bradley Arant Boult Cummings LLP

Federal Circuit Vacates $4.7 Million Patent Infringement Verdict

The Federal Circuit recently issued a significant decision in the ongoing patent litigation between Laboratory Corporation of America Holdings (Labcorp) and Qiagen Sciences, LLC, reversing a Delaware district court’s judgment...more

Lathrop GPM

Federal Circuit Decision Highlights the Risks of Inconsistency from Provisional to Patent

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In an August 1, 2025, precedential ruling (FMC Corporation v. Sharda USA, LLC, No. 24-2335 (Fed. Cir. Aug. 1, 2025)), the U.S. Court of Appeals for the Federal Circuit vacated a temporary restraining order granted by the U.S....more

Bradley Arant Boult Cummings LLP

A Super Touchy Reversal by the Federal Circuit Gives Taction Another Bite at Apple

In a significant blow to Apple, the Federal Circuit recently vacated a summary judgment of noninfringement in the case of Taction Technology, Inc. v. Apple Inc. The dispute centers on Taction’s U.S. Patent Nos. 10,659,885 and...more

McDermott Will & Schulte

Identical or not? Jury can’t decide issues of claim construction

The US Court of Appeals for the Federal Circuit reversed a district court’s denial of a motion for judgment as a matter of law (JMOL) of noninfringement, finding that the jury’s infringement findings were unsupported by...more

Proskauer - The Patent Playbook

Federal Circuit Reverses $4.7M Verdict in Labcorp v. QIAGEN: Claim Scope and Doctrine of Equivalents in the Crosshairs

The Federal Circuit recently reversed a $4.7M verdict in a patent lawsuit involving two patents concerning next-generation sequencing methods—U.S. Patent Nos. 10,017,810 and 10,450,597. Both patents concern DNA preparation...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Laboratory Corporation of America Holdings v. Qiagen Sciences, LLC

Laboratory Corporation of America Holdings v. Qiagen Sciences, LLC, Appeal No. 2023-2350 (Fed. Cir. Aug. 13, 2025) - In our Case of the Week, the Federal Circuit reversed a jury finding of infringement from the District...more

Knobbe Martens

Deleted Specification Portions Undermine Claim Construction

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FMC Corp. v. Sharda USA, LLC - Before Moore, Chen, and Barnett. Appeal from the Eastern District of Pennsylvania. The district court erred by construing a claim term based on disclosures made in a provisional application and...more

Brownstein Hyatt Farber Schreck

Federal Circuit: Claim Construction Missteps Can Be Fatal for Preliminary Injunctions

In a decision that should make every patent litigator pause before filing for preliminary relief, the Federal Circuit has vacated a preliminary injunction in FMC Corp. v. Sharda USA, LLC, No. 2024-2335 after finding that the...more

Morgan Lewis

Federal Circuit Applies Prosecution History Estoppel Based on Claim Cancellation

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The US Court of Appeals for the Federal Circuit recently held that cancellation of a claim during prosecution may give rise to prosecution history estoppel, precluding the patentee from recapturing the surrendered subject...more

Sheppard Mullin Richter & Hampton LLP

The Push and Pull of Prosecution Estoppel: How Cancelled Claims Can Affect the Scope of Non-Amended Claims

Prosecution history estoppel may narrow the scope of a claim that was unamended during prosecution, if another closely related claim is amended or cancelled during prosecution....more

MoFo Life Sciences

Is Your Claim Open or Closed? Claim Construction Takes on a New Meaning in Eye Therapies, LLC v. Slayback Pharma, LLC

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On June 30, 2025, the Federal Circuit issued a precedential decision in Eye Therapies, LLC v. Slayback Pharma, LLC, reversing the Patent Trial and Appeal Board’s (PTAB’s) claim construction of the phrase “consisting...more

Knobbe Martens

An Eye Toward Prosecution History

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EYE THERAPIES, LLC v. SLAYBACK PHARMA LLC - Before Taranto, Stoll and Scarsi (sitting by designation). The patent’s prosecution history required a restrictive interpretation of the term “consisting essentially of.”...more

MoFo Life Sciences

A Tip for Improving Your “Improved” Jepson Claim: Include Written Description Support

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The Federal Circuit issued a precedential opinion in In re: Xencor, Inc.concerning written support for Jepson claims. The decision affirms the decision of the Appeals Review Panel (ARP) of the USPTO, which held that the...more

Knobbe Martens

Reissue Applications Are Bound by the Scope of the Claims as Written, Not as Intended

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IN RE KOSTIC - Before Stoll, Clevenger, and Cunningham. Appeal from the Patent Trial and Appeal Board. When considering whether a reissue claim broadens the scope of the original patent, the PTAB determines the actual scope...more

Knobbe Martens

No Takebacks: The High Bar for Departing From Patent Lexicography

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ALNYLAM PHARMACEUTICALS, INC. v. MODERNA, INC. - Before Taranto, Chen, and Hughes. Appeal from the United States District Court for the District of Delaware. Once the high threshold for lexicography is met, there must be a...more

Alston & Bird

Patent Case Summaries | Week Ending June 20, 2025

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Ancora Technologies, Inc. v. Roku, Inc., et al., Nos. 2023-1674, -1701 (Fed. Cir. (PTAB) June 16, 2025). Per curiam opinion, before Louri, Reyna, and Hughes. Ancora owns a patent directed to restricting unauthorized use of...more

A&O Shearman

Federal Circuit Clarifies Nexus Standard For Secondary Consideration Licensing Evidence

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On June 16, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) vacated and remanded two final written decisions by the Patent Trial and Appeal Board (“PTAB”) that found several claims of Ancora Technologies,...more

Irwin IP LLP

Seeing Double?  Similar Claim Terms Could Be Trouble  

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When prosecuting a patent with similar language across various claims make sure your claim terms have different meanings, otherwise, during litigation you may lose the strategic opportunity to keep some claims valid if others...more

McDermott Will & Schulte

X-Ray Vision: Court Sees Through Implicit Claim Construction

The US Court of Appeals for the Federal Circuit reversed the Patent Trial & Appeal Board’s final determination that challenged patent claims were not unpatentable, finding that the Board’s decision relied on an erroneous...more

A&O Shearman

Federal Circuit Rejects PTAB’s Implicit And Incorrect Claim Construction Of “Between 1 And 10”

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On May 23, 2025, the United States Court of Appeals for the Federal Circuit (“CAFC”) issued a precedential opinion reversing a final written decision from the U.S. Patent Trial and Appeal Board (“PTAB”) finding the challenged...more

Sheppard Mullin Richter & Hampton LLP

Undetectable Amount of Magnification IS Magnification

This Federal Circuit Opinion analyzes invalidity based on anticipation and obviousness, more specifically based on implicit claim construction of the claim limitation and inherent disclosures....more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

Broadening on Reissue is Based on the Scope of the Language of the Claims, Not the Original Intention of the Applicant

Takeaways: - Claim construction for determining whether reissue claims are improperly broadened is based on fundamental claim construction cannons and not applicant intentions. - Patent Owners should check patented claims...more

McDonnell Boehnen Hulbert & Berghoff LLP

The Narrow Pathway to Patent Eligibility in the Federal Circuit

The last 11 years have taught us much about the Federal Circuit; namely, that a majority of the judges simply do not seem to appreciate software. Given the statements that several have made in opinions, one might be able to...more

McDonnell Boehnen Hulbert & Berghoff LLP

Regents of the University of California v. Broad Institute, Inc. (Fed. Cir. 2025) - Update

Only a few days after the one-year anniversary of hearing oral argument, the Federal Circuit handed down its decision in Regents of the University of California v. Broad Institute, Inc. on Monday. The opinion reviewed the...more

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