News & Analysis as of

Claim Construction

McDermott Will & Schulte

From ‘best’ to bust: Multiple methods to determine “optimal/best” render claims indefinite

The US Court of Appeals for the Federal Circuit affirmed a district court’s judgment of invalidity and grant of summary judgment of noninfringement, concluding that even if excluded portions of expert testimony were...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Patentee Acts as a Lexicographer to Impliedly Define Term by Consistently Referring to Feature with...

The Federal Circuit recently held that a patentee acted as its own lexicographer to define a claim term even though it did not explicitly define the term. Rather, because the patentee consistently and clearly used two terms...more

Sheppard Mullin Richter & Hampton LLP

Claim Construction: Indefinite or Clerical Error?

This Federal Circuit opinion analyzes the “very demanding standard” of judicial correction of erroneous wording of a patent claim. Background - Canatex Completion Solutions owns U.S. Patent No. 10,794,122. This patent...more

Sheppard Mullin Richter & Hampton LLP

Federal Circuit Upends Two Infringement Judgments

In Smartrend Manufacturing Group (SMG), Inc. v. Opti-Luxx Inc., the Federal Circuit vacated a finding of design patent infringement due to an erroneous claim construction. The panel also reversed the district court’s denial...more

Alston & Bird

Patent Case Summaries | Week Ending November 14, 2025

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Our Patent Case Summaries provide a weekly summary of the precedential patent-related opinions issued by the Court of Appeals for the Federal Circuit and the opinions designated precedential or informative by the Patent Trial...more

WilmerHale

Federal Circuit Patent Watch: Petitioner Has No Right to Appeal “Deinstitution” of IPRs

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In Re MOTOROLA SOLUTIONS, INC. [ORDER] (2025-134, 11/06/2025) (Dyk, Linn, Cunningham) Linn, J. The Court denied Motorola Solutions, Inc.’s petition for a writ of mandamus challenging the Acting Director’s decision to...more

Knobbe Martens

Litigation Update | October 2025

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Standing or Guesswork? A Speculative Risk of Patent Cancellation is Insufficient for Standing - US INVENTOR, INC. v. UNITED STATES PATENT AND TRADEMARK OFFICE Before Lourie, Reyna, and Stark. Appeal from the United States...more

Seyfarth Shaw LLP

Patent Pending and Oven Ready: A Deep Dive into America’s Turkey Innovations

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Thanksgiving is finally here, which means the turkey gets its annual moment in the spotlight. For 364 days a year, the turkey is just trying to fit in. It was forced to take on roles it never auditioned for. Turkey bacon....more

McDermott Will & Schulte

Pick a lane: USPTO Director nixes IPR for inconsistent claim construction positions

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The Director of the United States Patent and Trademark Office (USPTO) vacated a Patent Trial & Appeal Board decision instituting an inter partes review (IPR) proceeding after finding that the petitioner advanced inconsistent...more

McDermott Will & Schulte

Well, well, well: Indefinite claims turn out to be a typo

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The US Court of Appeals for the Federal Circuit reversed a district court ruling that invalidated patent claims for indefiniteness, finding that the disputed language was a minor clerical error. Canatex Completion Solutions,...more

Jones Day

Collateral Estoppel May Not Apply When Claim Interpretation Standards Differ

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In its recent decision in RØDE Microphones, LLC et. al. vs. Zaxcom, Inc., the PTAB declined to apply collateral estoppel based on prior post-grant proceedings because the prior proceedings had applied a different standard of...more

A&O Shearman

Federal Circuit Grapples With Standard For Judicial Correction Of Patent Claim Language

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On November 12, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) reversed and remanded the claim construction decision of the U.S. District Court for the Southern District of Texas that invalidated for...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Canatex Completion Solutions, Inc.

In our Case of the Week, the Federal Circuit revisited and clarified the “demanding standard for judicial correction via claim construction,” which permits a court in narrow circumstances to modify claim language to correct...more

Morgan Lewis

Federal Circuit Reinforces Standard for Judicial Correction of Patent Error

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The US Court of Appeals for the Federal Circuit reinforced when judicial correction of drafting errors is allowed, emphasizing the potential importance of intrinsic evidence, reasonable debate, and prosecution history. This...more

Warner Norcross + Judd

Complete Federal Circuit Victory for Opti-Luxx in Dual Patent Appeal

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The U.S. Court of Appeals for the Federal Circuit has set aside both judgments entered against Opti-Luxx, Inc. in a high-stakes pair of patent infringement cases involving illuminated school bus signs....more

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

IP Hot Topic: Is This Clear Enough? A Caution Against Claiming Transparency but Excluding Translucency From a Design Patent’s...

A U.S. design patent protects how something looks, as opposed to how it works. An applicant conveys that look primarily using drawings. Typically they use line drawings, so that the scope of protection is focused on the shape...more

Bradley Arant Boult Cummings LLP

When Courts Can Fix Patent Claim Errors: Federal Circuit Reverses Indefiniteness Ruling in Oil and Gas Equipment Case

The Federal Circuit’s recent decision in Canatex Completion Solutions, Inc. v. Wellmatics, LLC is a good example of the courts’ ability to correct obvious errors in patent claims through claim construction....more

Alston & Bird

Patent Case Summaries | Week Ending November 7, 2025

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Our Patent Case Summaries provide a weekly summary of the precedential patent-related opinions issued by the Court of Appeals for the Federal Circuit and the opinions designated precedential or informative by the Patent Trial...more

Alston & Bird

Intellectual Property Litigation Newsletter | November 2025

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Welcome to the Intellectual Property Litigation Newsletter, our review of decisions and trends in the intellectual property arena. In this edition, we learn avoiding prior art “by another” may be difficult, secret sales...more

Alston & Bird

Patent Case Summaries | Week Ending October 31, 2025

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Merck Serono S.A. v. Hopewell Pharma Ventures, Inc., Nos. 2025-1210, -1211 (Fed. Cir. (P.T.A.B.) Oct. 30, 2025). Opinion by Linn, joined by Hughes and Cunningham. Merck owns two patents directed to methods of treating...more

Jenner & Block

The Federal Circuit Expands Disclaimer of Patent Scope During Prosecution

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The Federal Circuit Court of Appeals’ recent decision in Focus Products Group International, LLC v. Kartri Sales Co., Inc., No. 2023-1446 (Fed. Cir. Sept. 30, 2025) reversed summary judgment of infringement on two patents and...more

McDonnell Boehnen Hulbert & Berghoff LLP

Aortic Innovations LLC v. Edwards Lifesciences Corp. (Fed. Cir. 2025)

In a seemingly otherwise run-of-the-mill, albeit precedential, decision, the Federal Circuit affirmed a stipulated judgment of non-infringement in Aortic Innovations LLC v. Edwards Lifesciences Corp....more

Smart & Biggar

Exemplary or optional elements in Canadian patent claims

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With the advent of claim fees in 2022, applicants must now limit the number of claims in their Canadian patent applications to avoid government fees. While cancelling claims (particularly dependent claims) is the simplest...more

IMS Legal Strategies

Bridging the Gap Between Brief and Bench: Graphics in Markman Hearings

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Whether you are a veteran partner or a first-year associate, preparing for a Markman hearing can be stressful. You may be done filing the briefs, but you have other things to contend with, such as refining the arguments,...more

McDermott Will & Schulte

Reframing the claim: Plain and ordinary meaning falls to lexicography

The US Court of Appeals for the Federal Circuit affirmed a district court’s construction of a claim, finding that the plain and ordinary meaning of a disputed term was redefined by the patentee under principles of...more

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