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Design Patent Patent Litigation

Fenwick & West LLP

Federal Circuit Confirms: Prosecution History Disclaimer Applies to Design Patents Too

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Many industries rely on design patents to protect the look and feel of their products—especially when aesthetics drive customer interest, brand identity, or market differentiation. In Top Brand LLC v. Cozy Comfort Company...more

Alston & Bird

Patent Case Summaries | Week Ending July 18, 2025

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Shockwave Medical, Inc. v. Cardiovascular Systems, Inc., et al., Nos. 2023-1864, -1940 (Fed. Cir. (PTAB) July 14, 2025). Opinion by Dyk, joined by Lourie and Cunningham....more

McDermott Will & Emery

Don’t get too comfy: Prosecution disclaimer also applies to design patents

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Concluding that the principles of prosecution history disclaimer apply to design patents, the US Court of Appeals for the Federal Circuit reversed a district court’s denial of judgment as a matter of law and entry of a jury...more

Dinsmore & Shohl LLP

“What You Say Can and Will Be Used Against Your Patent” Says Federal Circuit in New Opinion

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Last week, the Federal Circuit issued its decision in Top Brand LLC v. Cozy Comfort Company LLC, clarifying the application of prosecution history disclaimer in the context of design patents. This alert summarizes the...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Top Brand LLC v. Cozy Comfort Company LLC

Top Brand LLC v. Cozy Comfort Company LLC, Appeal No. 2024-2191 (Fed. Cir. July 17, 2025) In this week’s Case of the Week, the Court of Appeals for the Federal Circuit held that prosecution history disclaimer applies to...more

K&L Gates LLP

EU Designs: Genuine Design Activity and Intellectual Effort are not Required for Protection

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Advocate General Nicholas Emiliou has delivered his opinion in the case Deity Shoes, S.L. v Mundorama Confort, S.L. and another (Case C 323/24). The case considers whether a footwear design made by Deity Shoes, S.L. (Deity...more

Morgan Lewis

A New Line Drawn: Federal Circuit Applies Prosecution History Disclaimer to Design Patents

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The US Court of Appeals for the Federal Circuit recently issued a decision that held for the first time that principles of prosecution history disclaimer apply to design patents, aligning design patent law more closely with...more

Womble Bond Dickinson

Design Patent Obviousness: One Year Later

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One year has passed since the Court of Appeals for the Federal Circuit made its landmark decision in LKQ Corp. v. GM Global Tech. Operations LLC, which overruled the longstanding Rosen-Durling test for determining design...more

Patterson Belknap Webb & Tyler LLP

Judge Furman Denies TRO in Photo Booth Patent Case Where Plaintiff Delayed and Failed to “Focus” on Irreparable Harm and...

Judge Jesse M. Furman (S.D.N.Y.) recently denied Plaintiff Chengdu Tops Technology Co., Ltd.’s (“Chengdu”) motion seeking a temporary restraining order (“TRO”) against “a slew of merchant Defendants” to enjoin “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

ArentFox Schiff

Federal Circuit Sinks Appeal Over Design Patent Claiming Well-Known Pool Features

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The US Court of Appeals for the Federal Circuit recently affirmed a summary judgment of no design patent infringement in North Star Tech. Int’l Ltd. v. Latham Pool Products, Inc., ruling that the patented and accused pool...more

Downs Rachlin Martin PLLC

One Year of LKQ v. GM: How Much Has Really Changed?

One year ago today, the en banc Federal Circuit decided LKQ Corporation v. GM Global Technology Operations LLC, where it overturned the decades-old Rosen-Durling test for obviousness of a design patent for being “improperly...more

Patterson Belknap Webb & Tyler LLP

Judge Engelmayer Gets a Handle on “BlenderBottle” Patent Claims and Rejects Assertion of Indefiniteness

Judge Paul A. Engelmayer (S.D.N.Y.) recently construed claim terms at issue in a patent litigation between Plaintiffs Trove Brands, LLC, d/b/a The BlenderBottle Company, and Runway Blue, LLC (collectively, “Trove”) and...more

BakerHostetler

[Podcast] A New Test: Landmark Decision Overrules Framework for Design Patent Obviousness

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The legal landscape quaked, and clients and counsel continue to navigate the tremors. More than 40 years of precedent was upended in May 2024 when a federal circuit court struck down the Rosen-Durling test for assessing...more

Patterson Belknap Webb & Tyler LLP

To Threat or Not to Threat, That is the DJ Question: Judge Rakoff Dismisses DJ Action and Finds the Court Does Not Have...

On April 1, 2025, United States District Judge Jed S. Rakoff granted Defendants Marut Enterprises LLC and Brett Marut’s (collectively, “Defendants”) motion to dismiss and entered final judgment against Foto Electric Supply...more

Patterson Belknap Webb & Tyler LLP

All Shimmer and No Shine: Magistrate Judge Willis Recommends Granting Motion to Dismiss for Lack of Personal Jurisdiction and...

Recently, Magistrate Judge Jennifer E. Willis issued a Report and Recommendation recommending that defendant’s motion to dismiss pro se plaintiff Andrew Walker, Jr.’s (“Walker”) Second Amended Complaint be granted for lack of...more

Womble Bond Dickinson

Design Patent Obviousness

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The landscape of design patent law has recently evolved with the introduction of a new standard for determining obviousness. For decades, the Rosen-Durling test was used to assess obviousness of design patents....more

A&O Shearman

Federal Circuit Expands Economic Prong Of Section 337 Domestic Industry Requirement

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Lashify, Inc. is an American company, with headquarters and employees in the United States, that distributes, markets, and sells eyelash extensions (and cases and applicators for the eyelash extensions) in the United States....more

ArentFox Schiff

Federal Circuit Expands Scope of Activities That Can Establish a ‘Domestic Industry’ Under Section 337

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On March 5, the US Court of Appeals for the Federal Circuit issued a decision in Lashify, Inc. v. International Trade Commission, No. 23-1245, vacating in part the International Trade Commission’s (ITC) determination that...more

Mintz - Intellectual Property Viewpoints

Has There Been A Sea Change in Eligible Domestic Industries at the ITC That Will Last?

For decades, the ITC’s jurisdictional requirement – known as the domestic industry requirement – effectively shut out innovators from availing themselves of the powerful remedies of the forum, in the form of an exclusion...more

Quarles & Brady LLP

Sometimes Less is More: Patentability of “Simple” Designs

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When there are fewer design elements in a design claim or when the individual elements of the design seem commonplace in isolation, it can be easy to overlook the inventive effort that went into developing a design. Rather...more

Jones Day

PTAB Decides Concurrent IPR and PGR Petitions After Resolving Priority Date Dispute

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In anticipating a dispute over whether the America Invents Act would apply, Petitioner MPL Brands NV, Inc. (“MPL”) filed concurrent petitions for both inter partes review and post-grant review of U.S. Patent No. 11,932,441...more

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

2024 Federal Circuit IP Appeals: Summaries of Key 2024 Decisions

2024 brought exciting developments at the Federal Circuit. The court issued its first en banc decision in a patent case in five years in LKQ, which significantly altered the standard for proving obviousness of a design...more

Fish & Richardson

The Most Interesting Appellate Cases of 2024

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Appellate courts issued a variety of notable intellectual property (IP) cases in 2024, including cases touching on Orange Book listings, extraterritoriality, willful infringement, design patent obviousness, and public...more

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