News & Analysis as of

Pharmaceutical Patents Patents Abbreviated New Drug Application (ANDA)

Knobbe Martens

Hard to Stomach: Things You Say to Prosecute a Patent Can and Will Be Used Against You

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AZURITY PHARMACEUTICALS, INC. v. ALKEM LABORATORIES LTD. Before Murphy, Moore, and Chen. Appeal from the United States District Court for the District of Delaware. Arguments and amendments made during prosecution of a parent...more

McDermott Will & Emery

Prosecution Disclaimer Alive and Well, Especially in Closed Claim

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit affirmed a district court’s noninfringement determination, finding that the presence of a disclaimed compound in the accused product precluded infringement. Azurity Pharm., Inc....more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Azurity Pharmaceuticals, Inc. v. Alkem Laboratories Ltd.

Azurity Pharmaceuticals, Inc. v. Alkem Laboratories Ltd., Appeal No. 2023-1977 (Fed. Cir. Apr. 8, 2025) In our Case of the Week, the Federal Circuit affirmed that defendant Alkem’s proposed generic antibiotic did not...more

Venable LLP

Potential Impact of the Affordable Prescriptions for Patients Act Patent Limit on BPCIA Litigations

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On March 17, 2025, Senators Chuck Grassley (R-IA), John Cornyn (R-TX), Richard Blumenthal (D-CT), and Richard Durbin (D-IL) re-introduced the “Affordable Prescriptions for Patients Act” (“APPA”), which previously passed the...more

McDermott Will & Emery

What’s the (Re)issue? Patent Term Extensions for Reissue Patents

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Addressing the calculation of patent term extensions (PTEs) under the Hatch-Waxman Act, the US Court of Appeals for the Federal Circuit affirmed a district court decision that under the act the issue date of the original...more

Fenwick & West LLP

A Recent Tax Ruling Has Made ANDA Litigation Less Burdensome for Generics

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In Actavis v. U.S., a case at the intersection of tax law and patent law, the Federal Circuit held that generic drug companies’ Hatch-Waxman litigation expenses are “ordinary and necessary business expenses” and can be...more

BakerHostetler

A Later-Discovered Improvement to an Invention Cannot Be Used To Reach Back and Invalidate an Earlier-Filed Patent

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Novartis markets and sells a combination therapy of valsartan and sacubitril under the brand name Entresto® for the treatment of various forms of heart failure. MSN submitted an Abbreviated New Drug Application seeking...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Written Description and Enablement Depend on What a Patent 'Claims,' Not What the Claims Cover

The Federal Circuit recently reversed a district court decision that found a patent that did not describe after-arising technology failed to satisfy the written description requirement. In so doing, the Federal Circuit...more

Robins Kaplan LLP

New ANDA Cases - Winter 2024

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This chart summarizes the case name, presiding judge, drug, and patents-at-issue in all federal district court cases that are filed pursuant to the Hatch-Waxman Act. It also includes the same information for proceedings...more

Robins Kaplan LLP

Novartis Pharms. Corp. v. Becerra

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Entresto® (sacubitril/valsartan) - Case Name: Novartis Pharms. Corp. v. Becerra, Civ. No. 24-cv-2234 (DLF), 2024 WL 4492072 (D.D.C. Oct. 15, 2024) (Friedrich, J.)  Drug Product and Patent(s)-in-Suit: Entresto®...more

Robins Kaplan LLP

Melinta Therapeutics, LLC v. Nexus Pharms., Inc.

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Minocin® (minocycline) - Case Name: Melinta Therapeutics, LLC v. Nexus Pharms., Inc., Civ. No. 21-2636, 2024 WL 4799896 (N.D. Ill. Nov. 15, 2024) (Kness, J.)  Drug Product and Patent(s)-in-Suit: Minocin® (minocycline);...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Federal Circuit Reverses Decision Finding Lack of Written Description for Patent Claiming a Pharmaceutical Composition Comprising...

The Federal Circuit recently reversed a District of Delaware decision that invalidated claims of Novartis’s Orange Book listed patent, U.S. Patent No. 8,101,659 (the “’659 patent”), for its blockbuster drug Entresto®, a...more

Womble Bond Dickinson

2024 Hatch-Waxman Year in Review

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In 2024, the Hatch-Waxman Act continued to play a critical role in the U.S. pharmaceutical landscape, driving the dynamics between brand-name drugmakers and generics. This landmark legislation, enacted to encourage innovation...more

McDermott Will & Emery

Transparency Is the Best Medicine: Device Parts Don’t Justify Orange Book Listing

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The US Court of Appeals for the Federal Circuit affirmed a district court’s delisting of patents from the Orange Book because the patent claims did not “claim the drug that was approved” or the active ingredient of the drug...more

Wolf, Greenfield & Sacks, P.C.

CAFC Decision on Orange Book Listings for Drug/Device Combination Patents

On December 20th, 2024, the Court of Appeals for the Federal Circuit issued an important decision in Teva Branded Pharmaceutical Products R&D v. Amneal Pharmaceuticals that impacts Orange Book (OB) listings for patents...more

DLA Piper

Case-Narrowing Decisions are a One-Way Street: Reviewing Exeltis USA v. Lupin Ltd.

DLA Piper on

Exeltis USA, Inc. and other parties (Exeltis) recently prevailed against Lupin Ltd. and Lupin Pharmaceuticals, Inc. (Lupin) in a patent infringement suit brought in the District of Delaware. After a three-day bench trial, the...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2024 #3

CloudofChange, LLC v. NCR Corp., Appeal No. 2023-1111 (Fed. Cir. Dec. 18, 2024) In our Case of the Week, the Federal Circuit addressed the question of divided infringement in the context of system claims. In its...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Federal Circuit: Patent Must Claim Active Ingredient for Orange Book Listing

On December 20, 2024, the U.S. Court of Appeals for the Federal Circuit issued a significant ruling in the Teva v. Amneal case following oral arguments before the Federal Circuit, which we discussed in our previous article. ...more

Womble Bond Dickinson

Factors Courts Commonly Consider When Deciding Motions to Transfer in ANDA Litigation

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Where the Operative Facts Occurred - In assessing this primary factor, courts have looked to the location of defendant’s principal place of business, where the ANDA application was prepared, and where the ANDA product was...more

McCarter & English, LLP

Drug Delivery Device Patents Removed from Orange Book

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The listing of patents in the Orange Book has an important role in intellectual property protection for pharmaceuticals. Patents listed in the Orange Book can include, without question, patents covering compositions or...more

WilmerHale

USA: Unpacking the shift – Heightened antitrust scrutiny on Orange Book listings

WilmerHale on

Forty years ago, Congress passed the Hatch-Waxman Act, which streamlined the generic drug approval process and revamped how patent infringement claims would be litigated against those prospective generic drug applicants. At...more

McDermott Will & Emery

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

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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

DLA Piper

Silvergate Pharmaceuticals v. Bionpharma: The Relevance of Offers of Confidential Access Under the Hatch-Waxman Statute and Awards...

DLA Piper on

In Silvergate Pharmaceuticals, Inc. v. Bionpharma Inc., the US District Court for the District of Delaware decided an open question regarding pre-filing investigation and attorney fees under Title 35 of the US Code, Section...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Defining an Orange Book ‘Drug’

The Federal Circuit heard oral argument on November 8, 2024, grappling with the issue of what patent claims may properly be listed in the Orange Book. In late 2023, Teva filed a complaint for patent infringement in response...more

Robins Kaplan LLP

Generic Launches - Abbreviated New Drug Applications and 505(b)(2) Applications

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This chart tracks the date, drug, reference-listed company, applicant, and indications of publicly available drug launches resulting from Abbreviated New Drug Applications and 505(b)(2) Applications....more

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