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Extrinsic Evidence Patents

Hudnell Law Group

Intrinsic Record Paramount In Rule 12 Eligibility Determinations

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In the recent decision of Miller Mendel, Inc. v. City of Anna, Texas, 2024 U.S. App. LEXIS 17637 (Fed. Cir. July 18, 2024), the Federal Circuit upheld the district court’s grant of a motion for judgment on the pleadings under...more

Locke Lord LLP

How Much Claim Construction ‎Significance? – Extrinsic Evidence and Significant Figures

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In almost every claim construction, the courts make their claim construction ruling largely based on the intrinsic evidence – the claims, specification and prosecution history. However, the Federal Circuit (CAFC) bucked this...more

McDermott Will & Emery

Resorting to Extrinsic Evidence Is Necessary When Intrinsic Evidence Is Muddied

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The US Court of Appeals for the Federal Circuit determined that the limitation “a pH of 13 or higher” could not be construed using the asserted patents’ intrinsic evidence and therefore remanded to the district court with...more

Axinn, Veltrop & Harkrider LLP

Failing the Litmus Test? Weighing the Extrinsic Evidence in Construing "a pH of 13 or higher"

The Federal Circuit's claim construction gospel set forth in Phillips has been entrenched in the minds of patent litigators for nearly 20 years.1 The intrinsic evidence - the claims, specification, and prosecution history -...more

McDermott Will & Emery

Context Is Key in Claim Construction

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The US Court of Appeals for the Federal Circuit reiterated that intrinsic evidence trumps extrinsic evidence in determining the meaning of claim terms. Sequoia Technology, LLC v. Dell, Inc. et al., Case Nos. 21-2263; -2264;...more

Morrison & Foerster LLP - Federal Circuitry

Last Week In The Federal Circuit (January 17 – January 20): “Larger Than” Or “Large Enough”?

If you think claim construction is more fun than watching paint peel, then you’re probably a patent lawyer. And what’s more fun than claim construction? Claim construction with an indefiniteness challenge, as happened in this...more

McDermott Will & Emery

Dictionaries Don’t Know Best: The Intrinsic Record Prevails (Again)

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The US Court of Appeals for the Federal Circuit addressed the tension between the intrinsic and extrinsic record in claim construction, holding that the intrinsic record should be relied on first. The Court therefore reversed...more

McDermott Will & Emery

Bad Connection: Claim Construction Argument without Explanation Given No Weight

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The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board (Board) obviousness decision after finding that the patent owner failed to explain how its cited extrinsic evidence supported its proposed...more

McDermott Will & Emery

Terms of Degree Not Always Indefinite

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The US Court of Appeals for the Federal Circuit overturned a district court determination that the claim terms “resilient” and “pliable” were indefinite. The Federal Circuit found that the claims, while broad, were...more

Haug Partners LLP

Federal Circuit Denies Rehearing in Biogen v. Mylan: Dissent Raises Four Written Description “Points of Error” That En Banc Court...

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On March 16, 2022, the Court of Appeals for the Federal Circuit denied Biogen International GmbH and Biogen MA, Inc.’s (“Biogen”) combined petition for panel rehearing and rehearing en banc in Biogen International GmbH v....more

McDermott Will & Emery

Game Reset: Extrinsic Evidence Can’t Limit Claim Scope Beyond Scope Based on Unambiguous Intrinsic Evidence

The US Court of Appeals for the Federal Circuit reversed a district court’s grant of summary judgment of noninfringement after concluding that the district court erred by relying on expert testimony to construe a claim term...more

McDonnell Boehnen Hulbert & Berghoff LLP

ImmunoGen, Inc. v. Hirshfeld (Fed. Cir. 2022)

One of the casualties of the Leahy-Smith America Invents Act in 2012 was 35 U.S.C. § 145, which had provided recourse to U.S. District Courts for U.S. patent applicants disgruntled with a determination of unpatentability...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

Akin Gump Strauss Hauer & Feld LLP

Admission in Specification Dooms Organ Transplant Patents Under § 101

The United States District Court for the District of Delaware recently held that claims covering methods for evaluating organ transplant rejection are invalid under 35 U.S.C. § 101. The patents at issue disclose methods...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

Knobbe Martens

Clear Intrinsic Evidence Forecloses Extrinsic Evidence of Special Meaning

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SEABED GEOSOLUTIONS (US) INC. v. MAGSEIS FF LLC. Before Moore, Linn, and Chen.  Appeal from the Patent Trial and Appeal Board. Where a claim term’s meaning is clear from the intrinsic evidence, no extrinsic evidence...more

McDermott Will & Emery

Stick to the Fax: Conflicting Statements Made During Prosecution Lead to Indefiniteness

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In deciding whether use of the term “passive link” to define a connection between a computer terminal and a fax machine rendered a patent claim indefinite, the US Court of Appeals for the Federal Circuit affirmed the district...more

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (December 14-18): And/or confusion

Last week, we got what may be the last big batch of Federal Circuit opinions of 2020.  (In 2019, only six more opinions issued between this time and the end of the year.)  Although most of last week’s decisions were issued...more

Fenwick & West LLP

Federal Circuit Confirms That “Magnetic Fuzz” Is Too Fuzzy for a Patent Claim

Fenwick & West LLP on

On September 15, 2020, the U.S. Court of Appeals for the Federal Circuit, in IQASR v. Wendt, found that a district court did not err in its scrutiny of the extrinsic and intrinsic evidence presented to find U.S. Patent No....more

McDonnell Boehnen Hulbert & Berghoff LLP

On the Patent Eligibility of Graphical User Interfaces: Part II

This article is Part II of a study on the patent eligibility of graphical user interfaces.  Part I was published yesterday.  We continue from where we left off, with overviews of a handful of Federal Circuit § 101 decisions...more

McDonnell Boehnen Hulbert & Berghoff LLP

Phytelligence, Inc. v. Washington State University (Fed. Cir. 2020)

One of the banes of any practicing patent attorney's professional existence is counseling clients on licensing agreements where the parties attempt to avoid setting forth definitive terms on contract provisions regarding...more

McDonnell Boehnen Hulbert & Berghoff LLP

IBSA Institut Biochimique, S.A. v. Teva Pharmaceuticals USA, Inc. (Fed. Cir. 2020)

The Federal Circuit has spent the past few years applying the Supreme Court's most recent precedent, Nautilus, Inc. v. Biosig Instruments, Inc., on the indefiniteness standards in the patent statute.  35 U.S.C. § 112(b).  The...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

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