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Appeals Patent Litigation

K&L Gates LLP

Return to In-Person Patent Trial and Appeal Board Hearings

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Effective 1 September 2025, all hearings before the Patent Trial and Appeal Board (PTAB) will be conducted in person. Parties involved must attend these hearings physically and in person unless they can demonstrate a valid...more

Robins Kaplan LLP

Metacel Pharms. LLC v. Rubicon Rsch. Priv. Ltd.

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Nature of the Case and Issue(s) Presented: Ozobax is indicated for treatment of spasticity resulting from multiple sclerosis, and particularly flexor spasms and concomitant pain, clonus, and muscular rigidity. While the use...more

Knobbe Martens

Applicant Admitted Prior Art Can (Sometimes) Show Obviousness

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SHOCKWAVE MED., INC., V. CARDIOVASCULAR SYS., INC. - Before Lourie, Dyk, and Cunningham.  Appeal from the United States Patent and Trademark Office, Patent Trial and Appeal Board in No. IPR2019-00405. In inter partes review...more

Ladas & Parry LLP

Federal Circuit: it’s not easy being green for colour marks

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Legal updates: case law analysis and intelligence - - The TTAB, applying the Milwaukee test, rejected an application for a dark green colour mark for medical gloves on the ground that it was generic - The Federal Circuit...more

Robins Kaplan LLP

Jazz Pharms., Inc. v. Avadel CNS Pharms., LLC

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Case Name: Jazz Pharms., Inc. v. Avadel CNS Pharms., LLC, Nos. 2024-2274, 2024-2277, 2024-2278, 2025 WL 1298920 (Fed. Cir. May 6, 2025) (Circuit Judges Lourie, Reyna, and Taranto presiding; Opinion by Lourie, J.) (Appeal from...more

Knobbe Martens

Cancellation of a Closely Related Claim During Prosecution Can Trigger Prosecution History Estoppel

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COLIBRI HEART VALVE LLC v. MEDTRONIC COREVALVE, LLC - Before Taranto, Hughes, and Stoll. Appeal from the United States District Court for the Central District of California. The Federal Circuit reversed a $106 million...more

Knobbe Martens

Not So Cozy: Prosecution History Disclaimer for Design Patents

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TOP BRAND LLC v. COZY COMFORT CO. LLC - Before Dyk, Reyna, and Stark. Appeal from the United States District Court for the District of Arizona. Summary: Arguments presented during prosecution of a design-patent application...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: IGT v. Zynga Inc.

IGT v. Zynga Inc., Appeal No. 2023-2262 (Fed. Cir. July 22, 2025) In this week’s Case of the Week, the Federal Circuit examined the reviewability and merits of the Patent Trial Appeal Board’s decision to institute inter...more

Cooley LLP

Federal Circuit Strengthens Prosecution History Estoppel Principles in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC

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On July 18, 2025, the US Court of Appeals for the Federal Circuit reversed a lower court ruling in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, holding that prosecution history estoppel barred the patentees’ doctrine...more

Irwin IP LLP

Fed. Cir. Ends Approach Employed To Make Challenging Patents As Abstract Ideas More Difficult 

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Optis Cellular Tech., LLC v. Apple Inc., No. 22-1925 (Fed. Cir. June 16, 2025) - Over a decade ago, the U.S. Supreme Court arguably made it easier to invalidate a patent for claiming nonpatentable abstract ideas when it...more

Knobbe Martens

Combination Dosing Regimen Not Obvious Despite Overlapping Prior-Art Ranges

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JANSSEN PHARMACEUTICALS, INC. v. TEVA PHARMACEUTICALS USA, INC. Before Prost, Reyna, and Taranto. Appeal from the United States District Court for the District of New Jersey. The Federal Circuit found that claims reciting a...more

Troutman Pepper Locke

Federal Circuit Ruling Broadens Reach of Prosecution History Estoppel to Include Canceled Claims

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Prosecution history estoppel typically arises when a claim is rejected during prosecution and is then amended (narrowed) to overcome the rejection. However, in Colibri Heart Valve LLC v. Medtronic CoreValve, LLC, No....more

Lathrop GPM

Federal Circuit Says Claim Cancellation Can Create Prosecution History Estoppel

Lathrop GPM on

In a July 18 precedential decision in Colibri Heart Valve LLC v. Medtronic CoreValve LLC, the U.S. Court of Appeals for the Federal Circuit overturned a $106 million jury verdict against Medtronic for infringement of a patent...more

ArentFox Schiff

USPTO Ends Remote PTAB Hearings Effective September 1

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The US Patent and Trademark Office (USPTO) has announced that, effective September 1, all PTAB hearings will be conducted in person at USPTO offices, marking a departure from the virtual and hybrid formats adopted in recent...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

Proskauer - The Patent Playbook

PTO Defends its Recent Policy Changes Regarding Discretionary Denials

In the past few months, the U.S. Patent and Trademark Office (“PTO”) Acting Director has made substantial changes to the process for, and factors considered in, exercising discretion to deny institution of an inter partes...more

McDermott Will & Emery

Applicant-admitted prior art may inform but can’t be basis for IPR challenges

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The US Court of Appeals for the Federal Circuit clarified that while applicant-admitted prior art (AAPA) may be cited as evidence of general background knowledge in inter partes review (IPR) proceedings, it cannot serve as...more

McDermott Will & Emery

Valve turned: Prosecution history estoppel applies to closely related claims

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The US Court of Appeals for the Federal Circuit reversed a jury’s infringement finding, concluding it was precluded by prosecution history estoppel. Colibri Heart Valve LLC v. Medtronic CoreValve LLC, Case No. 23-2153 (Fed....more

McDermott Will & Emery

Victory lap: Extraterritorial injunction permitted for breach of settlement agreement

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The US Court of Appeals for the Fourth Circuit upheld a permanent injunction, concluding that the district court properly determined that a party’s violation of a settlement agreement would lead to irreparable harm. Wudi...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

McDonnell Boehnen Hulbert & Berghoff LLP

Colibri Heart Valve LLC v. Medtronic Corevalve, LLC (Fed. Cir. 2025)

The doctrine of equivalents (DOE), a creation of the Supreme Court in Graver Tank & Mfg. v. Linde Air Products (1950), is balanced by the concept of prosecution history estoppel (PHE), the contours of which were delineated...more

Jenner & Block

A Secured Reversal of Preliminary Injunction in High-Stakes Pharmaceutical Battle

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In a significant victory for pharmaceutical competition and access to generic drugs, Jenner & Block secured a key litigation win on behalf of client MSN Pharmaceuticals. A federal judge denied a pharmaceutical company’s...more

A&O Shearman

UPC Court of Appeal clarifies approach to claim construction

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Insulet v EOFlow UPC_CoA_768/2024 (Ord_69078/2024) The Unified Patent Court (UPC) Court of Appeal has issued a significant decision that provides important guidance on the interpretation of patent claims in UPC...more

A&O Shearman

Federal Circuit Invalidates Patent For Angioplasty Catheter Based On Applicant Admitted Prior Art

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The Federal Circuit recently issued a precedential decision in Shockwave Med., Inc. v. Cardiovascular Sys., Inc. (CSI), affirming-in-part and reversing-in-part the Patent Trial and Appeal Board’s (PTAB) decision, and...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

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