News & Analysis as of

Patent Prosecution History Patent Litigation

Venable LLP

PTAB Issues Final Written Decision Finding Seagen’s Adcetris® Patent Claims Unpatentable

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On January 16, 2024, the PTAB issued a Final Written Decision in a post-grant review (“PGR”) of claims in U.S. Patent No. 10,808,039 (the “’039 patent”) owned by Seagen Inc. (“Seagen”). PGR2021-00030 was filed by Daiichi...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: Discretionary Denial under § 325(d): Strategic Implications of the PTAB’s Advanced...

The USPTO Patent Trial and Appeal Board (PTAB) has increasingly used its discretionary denial authority in recent years. Although the PTAB’s discretion under 35 U.S.C. § 314(a) and Fintiv grabbed many headlines in 2021, the...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

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Indefiniteness Is Not Judged by the “Claim Language, Standing Alone”

Evaluating whether a patent claim is sufficiently “definite” under 35 U.S.C. § 112 requires looking beyond just the claim language itself. The Federal Circuit reaffirmed this fundamental principle in a recent decision...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

Knobbe Martens

Prosecution History Disclaimer and Estoppel Lead To Noninfringement

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TRAXCELL TECHNOLOGIES, LLC V. NOKIA SOLUTIONS AND NETWORKS Before Prost, O’Malley, and Stoll. Appeal from the Eastern District of Texas. Summary: An applicant’s arguments distinguishing prior art during patent...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 16-20): Controlling for Authentication

It has been another steamy August week here in Washington and at the Federal Circuit, with eleven new opinions fresh off the press.  Below we provide our usual weekly statistics and our case of the week—our highly subjective...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

Smart & Biggar

Federal Court finds silodosin formulation patent valid but not infringed

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On December 24, 2020, the Federal Court issued a decision in a patent infringement action pursuant to s. 6(1) of the Patented Medicines (Notice of Compliance) Regulations relating to silodosin (Allergan’s RAPAFLO): Allergan...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

McDonnell Boehnen Hulbert & Berghoff LLP

Sherwin-Williams Co. v. PPG Industries, Inc. (W.D. Pa. 2020)

Earlier this month, in Sherwin-Williams Co. v. PPG Industries, Inc., Special Master Henry M. Sneath issued a Report and Recommendation in the U.S. District Court for the Western District of Pennsylvania that a motion by...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

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