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Written Descriptions Prior Art

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

Fitch, Even, Tabin & Flannery LLP

Priority Denied, Patent Derailed: When One Filing Cancels Out the Other

On April 22, 2025, the Federal Circuit issued a decision In re: Bonnie Iris McDonald Floyd that underscores a critical and often overlooked risk in design patent prosecution: relying on a utility patent application for...more

ArentFox Schiff

Designers Beware: Prior Utility Patent Lacking Written Support Can Anticipate Later-Filed Design Patents

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In its recent In re Floyd opinion, the US Court of Appeals for the Federal Circuit upheld a decision by Patent Trial and Appeal Board (PTAB) to reject a design applicant’s priority claim to an earlier utility filing for...more

Wilson Sonsini Goodrich & Rosati

Method of Treatment Claim’s Limiting Preamble Must Satisfy the Written Description Requirement

On March 13, 2025, the U.S. Court of Appeals for the Federal Circuit issued a decision in the case of In Re: Xencor, Inc. In this Appeal from the Appeals Review Panel of the Patent Trial and Appeal Board (ARP), with regard to...more

Morgan Lewis

Priority Catch-22: Federal Circuit Chills Design Patent with Rejection of Priority Claim

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The US Court of Appeals for the Federal Circuit recently issued a decision that highlights a risk in design patent prosecution—specifically, attempting to claim priority to a utility application. In re Floyd, the Federal...more

Goodwin

The Court of Appeals for the Federal Circuit’s In Re Riggs Decision: 35 USC 102(e) Prior Art Requires Written Description Support...

Goodwin on

On March 24, 2025, the US Court of Appeals for the Federal Circuit (Federal Circuit) issued a decision titled In Re: Riggs (the Riggs decision) that vacated a decision of the Patent Trial and Appeal Board (PTAB) of the US...more

Lathrop GPM

Significant Federal Circuit Decision Redefines Prior Art Requirements

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Last week a remarkably interesting Federal Circuit case was decided concerning whether an asserted reference was properly shown to qualify as prior art in the rejection of a pending patent application. The pending application...more

A&O Shearman

Federal Circuit Clarifies Requirements For A Prior Art Reference’s Entitlement To The Filing Date Of A Provisional Application To...

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On March 24, 2025, the U.S. Court of Appeals for the Federal Circuit (“CAFC”) issued an opinion vacating and remanding a decision of the U.S. Patent Trial and Appeal Board (the “Board”) that a published patent application...more

Baker Botts L.L.P.

Third Quarter 2024 Federal Circuit Law Update

Baker Botts L.L.P. on

Since serving as a Federal Circuit clerk, Michael Hawes has monitored that court's precedential opinions and prepares a deeply outlined index by subject matter (invalidity, infringement, claim construction, etc.) of relevant...more

McDermott Will & Emery

Holy Pulmonary Hypertension, Batman: Method of Treatment Not Constrained by Safety and Efficacy

The US Court of Appeals for the Federal Circuit affirmed a district court’s holding that the asserted method of treatment patent was valid and infringed because safety and efficacy are not patent concerns. The Federal Circuit...more

McDermott Will & Emery

First Rule of the PTAB? Play by the Rules

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The US Court of Appeals for the Federal Circuit affirmed two Patent Trial & Appeal Board decisions holding the challenged claims unpatentable as obvious, even though the Board declined to consider evidence of antedating and...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Prior Art Disclosure with Same Specificity as Patent Inherently Anticipates Claims

In a recent appeal from the PTAB, the Federal Circuit held that claims of a patent were inherently anticipated where the patent and prior art incorporated the same reference to describe a process for making the claimed...more

Bradley Arant Boult Cummings LLP

Searching for Claim Support in a Patent Specification? You Better Blaze a Trail

Last month the Federal Circuit affirmed a PTAB inter partes review (IPR) decision finding that the University of Minnesota’s patent claim directed to the anti-cancer drug sofosbuvir was not adequately supported by the written...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions

As part of the recovery from the global COVID-19 pandemic, the U.S. Court of Appeals for the Federal Circuit took steps to return to normal operations. It began requiring live oral arguments in August 2022 and, by November,...more

Harris Beach Murtha PLLC

Federal Circuit Imposes Heightened Standard for Written Description Support of Negative Claim Limitations

In Novartis Pharmaceuticals Corp. v. Accord Healthcare, Inc., the U.S. Court of Appeals for the Federal Circuit (“Federal Circuit”) held patent claims invalid for lack of written description where a negative limitation was...more

McDermott Will & Emery

Outlier? Split Federal Circuit Denies En Banc Review of Written Description Requirement

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The US Court of Appeals for the Federal Circuit denied a patent owner’s request for en banc rehearing of a panel decision that invalidated a patent for lack of written description on the basis that a person of skill in the...more

McDermott Will & Emery

Federal Circuit Won’t Rescue Parachute Patent

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The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board (Board) decision that claims to a ballistic parachute were obvious over the prior art based on knowledge attributable to artisans and...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 Upholds a Silent Written Description

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In a precedential opinion this week, the Federal Circuit affirmed a district court judgment in favor of Novartis Pharmaceuticals, in an appeal brought by HEC Pharm challenging the written description in Novartis’s 9,187,405...more

McDonnell Boehnen Hulbert & Berghoff LLP

Novartis Pharmaceuticals Corp. v. Accord Healthcare, Inc. (Fed. Cir. 2022)

When does the absence of evidence turn into evidence of absence, and when does such absence amount to an adequate written description of the absence of a step of a method claim?  This is a question that comes readily to mind...more

Haug Partners LLP

No Clear Error to Find Lack of Written Description for a Method of Treatment Patent Despite Separate Disclosures of the Drug,...

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Biogen International GMBH, Biogen MA, Inc., v. Mylan Pharmaceuticals Inc. marks the Federal Circuit’s most recent interpretation of the 35 U.S.C. § 112 written description requirement in the Hatch-Waxman context. No....more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2021 #2

AstraZeneca AB v. Mylan Pharmaceuticals Inc., Appeal No. 2021-1729 (Fed. Cir. Dec. 8, 2021) - Our Case of the Week again focuses on numerical values in claims. Last week we addressed a case involving whether there was...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit Finds Written Description for a Claimed Range Not Met by Specific Examples Within the Range

In a recent decision issued in Indivior UK Limited v. Dr. Reddy’s Laboratories, the Federal Circuit affirmed a decision from the PTAB that a limitation to range of polymer weight percentages lacked written description support...more

MoFo Life Sciences

Traversing Higher Hurdles For Functional Limitations Under Section 112

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Genus claims have long been an important component of patent strategy, extending coverage around a lead compound to stop would-be competitors. Recent decisions from the Federal Circuit, however, highlight a tightening...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

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