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Patent Prosecution History Claim Construction Patents

Fish & Richardson

What’s New in Director Review? Lessons From the Delegated Rehearing Panel’s First Decisions

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The Director of the United States Patent and Trademark Office (USPTO) established the interim process for Director Review of Patent Trial and Appeal Board (PTAB) decisions in the wake of the Supreme Court’s 2021 decision in...more

Haug Partners LLP

Federal Circuit Emphasizes the Importance of Prosecution History in Resolving Ambiguous Claim Terms in University of Massachusetts...

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On June 13, 2022, the Federal Circuit issued a precedential opinion that vacated the district court’s judgment of indefiniteness, deciding that the ruling was based on an erroneous claim construction. The patents-in-suit...more

Morrison & Foerster LLP - Federal Circuitry

Last Week In The Federal Circuit (April 4 - 8): Claim Differentiation Carries The Day

Last week was argument week at the Federal Circuit, and we’ve already begun seeing decisions from the argued cases trickle in. Below we provide our usual weekly statistics and a detailed discussion of our case of the week—our...more

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

2021 PTAB Year in Review: Analysis & Trends

[co-author: Jamie Dohopolski] Love it or hate it, ignore the USPTO Patent Trial and Appeal Board (PTAB) at your peril. The introduction of the PTAB as part of the America Invents Act over ten years ago has forever changed...more

Snell & Wilmer

Federal Circuit Rejects “Unanswered Questions” Indefiniteness Standard

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Last week, a split Federal Circuit panel reversed a decision invalidating certain computer-aided-design patent claims because the district court used an incorrect indefiniteness standard....more

Haug Partners LLP

AztraZeneca AB v. Mylan Pharms. Inc.: Claim Construction of a Percentage Term Guided by the Written Description and Prosecution...

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On December 8, 2021, the Federal Circuit in AztraZeneca AB v. Mylan Pharms. Inc. held that the claim construction of a percentage term should “‘most naturally align[] with the patent’s description of the invention,’ as...more

McDermott Will & Emery

3D Chess at the Federal Circuit: Can't Walk Back Arguments in Prior Appeal or Prosecution History

In the second appeal to the US Court of Appeals for the Federal Circuit, the preamble term “three-dimensional spreadsheet” was found to be a limitation in the context of claims directed to organizing and presenting...more

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

PTAB Strategies and Insights - August 2021: Federal Circuit Remands for Board's Improper Use of Extrinsic Evidence During Claim...

In Seabed Geosolutions (US) Inc. v. Magseis FF LLC, the Federal Circuit vacated and remanded an inter partes review decision for the Patent Owner. The Court held that the Patent Trial and Review Board failed to perform the...more

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

PTAB Strategies and Insights - August 2021

The PTAB Strategies and Insights newsletter provides timely updates and insights into how best to handle proceedings at the USPTO. It is designed to increase return on investment for all stakeholders looking at the entire...more

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (August 9-13): The Dangers of Relying Solely on Extrinsic Evidence for Claim Construction

Although things often slow down in Washington in the August heat and humidity, that wasn’t the case this past week for the Federal Circuit. All told, the Court issued 5 precedential opinions and ruled in 17 cases. Below we...more

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (June 21–25): How Airtight Does an Air Mattress Have to Be?

The Federal Circuit announced last week that it will resume in-person oral arguments later this summer. The Court’s new protocols generally take effect with the September 2021 sitting, and we noticed that the Court has also...more

Jones Day

PTAB Adopts Nautilus Indefiniteness Standard

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In post-grant proceedings since 2018, the PTAB has applied the same claim construction standard as used in district court; a recent Memorandum confirms the PTAB will likewise apply the same standard that district courts use...more

McDonnell Boehnen Hulbert & Berghoff LLP

Horizon Pharma, Inc. v. Dr. Reddy's Laboratories Inc. (Fed. Cir. 2021)

Indefiniteness under U.S. patent law is a failure to satisfy the statutory requirements of 35 U.S.C. § 112(b), which reads:  "The specification shall conclude with one or more claims particularly pointing out and distinctly...more

McDonnell Boehnen Hulbert & Berghoff LLP

Vectura Ltd. v. GlaxoSmithKline LLC (Fed. Cir. 2020)

Trial courts tend to get more than the benefit of the doubt when their decisions are viewed under the "abuse of discretion" standard, and juries similarly are affirmed unless there isn't substantial evidence supporting their...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Does the Term “Human Antibody” Include Humanized Antibodies?

In the context of Immunex’s patent on IL-4 antibodies, the Federal Circuit says yes. On October 13, 2020, the Federal Circuit affirmed the Patent Trial and Appeal Board’s (the “Board”) final written decision in...more

Knobbe Martens

Federal Circuit Review - August 2020

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Claims Covering Human Engineering That Exploit a Naturally-Occurring Phenomenon Are Patent Eligible - In Illumina, Inc. V. Ariosa Diagnostics, Inc., Appeal No. 19-1419, the Federal Circuit modified its earlier decision...more

Haug Partners LLP

The Federal Circuit Says Prosecution History Was Insufficient to Overcome the Claims and Written Description for Claim...

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Baxalta Inc. v. Genentech, Inc., 2019-1527, (Fed. Cir. Aug 27, 2020) - In an appeal from the District of Delaware, the Federal Circuit (Judges Moore, Plager, and Wallach) vacated and remanded the district court’s judgment...more

Akin Gump Strauss Hauer & Feld LLP

Focusing on the Language Used in the Claims, the Federal Circuit Vacates a District Court’s Construction of the Terms “Antibody”...

The Federal Circuit recently vacated a district court’s construction of the terms “antibody” and “antibody fragment.” The court’s constructions were not consistent with the claim language, and nothing in the specification or...more

Knobbe Martens

Imaginary Slice of Accused Product Failed to Satisfy Structural Claim Limitation

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NEVILLE v. FOUNDATION CONSTRUCTORS, INC. Before Lourie, O’Malley, and Chen. Appeal from the United States District Court for the Central District of California. Summary: The Federal Circuit affirmed a construction of...more

Knobbe Martens

The Definition of “Half-Liquid” Is Only Half Baked

Knobbe Martens on

IBSA INSTITUT BIOCHIMIQUE, S.A. V. TEVA PHARMACEUTICALS USA, INC. Before Prost, Reyna, and Hughes. Appeal from the District Court of Delaware - Summary: A term may be indefinite when the proposed construction is not...more

Knobbe Martens

Disclaimer Not Required for Prosecution History to Limit Claim Scope

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PERSONALIZED MEDIA COMMUNICATION, LLC v. APPLE INC - Before Reyna, Taranto and Stoll. Appeal from the Patent Trial and Appeal Board. Summary: Prosecution history evidence need not rise to the level of disclaimer to...more

Brownstein Hyatt Farber Schreck

Federal Circuit Infers Disavowal, Limiting Scope of Chamberlain Patent

The Federal Circuit has issued another opinion arising from the patent conflict between The Chamberlain Group and Techtronic Industries—and, once again, a patent owned by Chamberlain suffered a major blow. In Techtronic...more

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

PTAB Strategies and Insights - September 2019: Words Matter in a Design Patent

It is important for petitioners and patent owners alike to understand the implications of Curver Luxembourg v. Home Expressions, which relied on prosecution history and the title to limit design patent claim scope....more

McDermott Will & Emery

Sharp Turnaround on Applicability of § 112, ¶6 Analysis

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Addressing the applicability of 35 USC § 112, ¶6 to the term “mechanical control assembly,” the US Court of Appeals for the Federal Circuit found that the Patent Trial and Appeal Board (PTAB) gave undue weight to the patent’s...more

McDermott Will & Emery

When Is “Wherein” Clause Limiting? When It’s Material to Patentability

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The US Court of Appeals for the Federal Circuit affirmed a district court’s finding, based largely on the prosecution history, that disputed “wherein” clauses were limiting and therefore the grant of a preliminary injunction...more

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