News & Analysis as of

Doctrine of Equivalents Patent Litigation Abbreviated New Drug Application (ANDA)

Robins Kaplan LLP

Alcon Inc. v. Padagis Israel Pharms. Ltd.

Robins Kaplan LLP on

Simbrinza® (brinzolamide / brimonidine) - Case Name: Alcon Inc. v. Padagis Israel Pharms. Ltd., Civ. No. 22-1422-WCB, 2025 WL 457119 (D. Del. Feb. 5, 2025) (Bryson, C.J.)  Drug Product and Patent(s)-in-Suit:  Simbrinza®...more

McDermott Will & Emery

The Devil Is in the Details: Bioequivalence, In Vitro Testing Not Enough to Establish Infringement

McDermott Will & Emery on

Addressing for the first time the issue of whether bioequivalence data and in vitro testing can show that an abbreviated new drug application (ANDA) product with different immediate and delayed release portions infringed on a...more

Robins Kaplan LLP

Almirall, LLC v. Torrent Pharms., Ltd.

Robins Kaplan LLP on

Case Name: Almirall, LLC v. Torrent Pharms., Ltd., Civ. No. 20-1373-LPS (D. Del. July 13, 2021) (Stark, J.) - Drug Product and Patent(s)-in-Suit: Aczone® Gel, 7.5% (Dapsone); U.S. Patent No. 9,517,219 (“the ’219 patent”)...more

McDonnell Boehnen Hulbert & Berghoff LLP

Eli Lilly & Co. v. Apotex, Inc. (Fed. Cir. 2020)

After more than two decades of being the red-headed stepchild of patent infringement before the Federal Circuit, infringement under the doctrine of equivalents has made a dramatic comeback in the past few years, the Court...more

McDonnell Boehnen Hulbert & Berghoff LLP

Eagle Pharmaceuticals Inc. v. Slayback Pharma LLC (Fed. Cir. 2020)

Infringement under the doctrine of equivalents (as a basis of a successful cause of action having renewed vigor before the Federal Circuit recently (see, e.g., "Galderma Laboratories, L.P. v. Amneal Pharmaceuticals LLC") is...more

Foley & Lardner LLP

Doctrine Of Equivalents Not Barred By Claim Amendments

Foley & Lardner LLP on

Recent Federal Circuit decisions demonstrate that the doctrine of equivalents is alive and well, and not always barred by claim amendments. In both Ajinomoto Co. v. ITC and Eli Lilly and Co. v. Hospira, Inc., the Federal...more

Mintz - Intellectual Property Viewpoints

Federal Circuit Cautions Against Rigid Approach to Prosecution History Estoppel in Fourth Appeal from ALIMTA® Litigations

On August 9, 2019, the United States Court of Appeals for the Federal Circuit, in Eli Lilly & Co. v. Hospira, Inc., Nos. 2018-2126, 2127, 2128, reversed in-part and affirmed in-part a district court’s determination of...more

WilmerHale

Federal Circuit Patent Updates - May 2016

WilmerHale on

Ruckus Wireless, Inc. v. Innovative Wireless Solutions (No. 2015-1425, 1438, 5/31/16) (Prost, Reyna, Stark) - May 31, 2016 3:11 PM - Reyna, J. Affirming summary judgment of non-infringement of patents based on...more

Foley & Lardner LLP

CAFC Affirms Finacea Gel Infringement Under Doctrine of Equivalents

Foley & Lardner LLP on

In Intendis GmbH v. Glenmark Pharmaceuticals Inc., USA, the Federal Circuit affirmed the district court decision that found infringement under the doctrine of equivalents. This case shows that the doctrine of equivalents...more

McDonnell Boehnen Hulbert & Berghoff LLP

Spectrum Pharmaceuticals Inc. v. Sandoz Inc. (Fed. Cir. 2015)

Last week the Federal Circuit affirmed a District Court's finding of invalidity and non-infringement in ANDA litigation between Spectrum Pharmaceuticals and Sandoz. In so doing, the Court deferred to the factual...more

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