News & Analysis as of

Patent Infringement Hatch-Waxman Pharmaceutical Patents

Quinn Emanuel

Federal Judge Rules on Patent Damages Issue in Mallinckrodt v. Airgas Case

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A Delaware federal judge has issued a decision regarding the date that a hypothetical negotiation would have taken place, a decision that impacts the amount of damages that could be recovered in the patent dispute between...more

Jones Day

Bill Seeks to Restrict 30-Month Stay in Hatch-Waxman Litigation to One Patent

Jones Day on

Senate Bill S. 4878 seeks to force innovator pharmaceutical companies to select a single Orange Book listed patent for the 30-month stay. ...more

American Conference Institute (ACI)

[Event] Pharma & Biotech Patent Litigation USA - October 14th - 15th, New York, NY

Attend ACI's inaugural Forum on Pharma & Biotech Patent Litigation USA and garner a winning edge in the high- stakes life sciences patent ligation arena. Get the in-depth and practical information that you need to develop...more

Sheppard Mullin Richter & Hampton LLP

Claiming A Range, Watch Out For The Presumption Of Obviousness

This Federal Circuit opinion analyzes the presumption of obviousness and the obviousness challenge based on prior art that describes a wider range of doses than what is claimed....more

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

Breaking the Patent Thicket: Why the Proposed ETHIC Act Could Have Big Implications on Pharma Patent Law

On July 15, 2025, U.S. Senators Peter Welch (D‑VT), Josh Hawley (R‑MO), and Amy Klobuchar (D‑MN) introduced the ETHIC Act—the Eliminating Thickets to Increase Competition Act (S. 2276)—in the U.S. Senate. The bill is designed...more

American Conference Institute (ACI)

[Virtual Conference] Passport to Proficiency on the Essentials of Hatch-Waxman and BPCIA - October 14th - 30th, 1:00 pm EST

ACI’s virtual Annual Passport to Proficiency on the Essentials of Hatch-Waxman and BPCIA equips early-career professionals with the legal and regulatory fluency needed to contribute meaningfully to product strategy and...more

K&L Gates LLP

Optional Refrigeration Freezes Induced Patent Infringement Claim

K&L Gates LLP on

In Metacel Pharmaceuticals LLC v. Rubicon Research Private Ltd., the Court of Appeals for the Federal Circuit (CAFC) held that the optional product storage temperatures stated in Rubicon’s proposed generic product label did...more

Robins Kaplan LLP

New ANDA Cases Second Quarter 2025

Robins Kaplan LLP on

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

ANDA Litigation Settlements Second Quarter 2025

Robins Kaplan LLP on

This chart summarizes the case name, drug, patents-in-suit, and publicly available terms for reported settlements in federal district court cases that are filed pursuant to the Hatch-Waxman Act. Novartis Pharms. Corp. v....more

Robins Kaplan LLP

Ingenus Pharms., LLC v. Nexus Pharms., Inc.

Robins Kaplan LLP on

Nature of the Case and Issue(s) Presented: Cyclophosphamide is an antineoplastic agent used to treat various cancers, including lymphomas, myeloma, leukemia, and breast carcinoma. The ’952 patent, issued to Plaintiffs in May...more

Robins Kaplan LLP

Astellas Pharma Inc. v. Zydus, Inc. II

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Nature of the Case and Issue(s) Presented: Astellas sued Lupin and Zydus based on the generics manufacturers’ ANDA filing and their efforts to make and sell generic mirabegron. In the leadup to the 2023 bench trial, the...more

Robins Kaplan LLP

Azurity Pharms., Inc. v. Alkem Labs. Ltd.

Robins Kaplan LLP on

Nature of the Case and Issue(s) Presented: The ’948 patent claims non-sterile drinkable liquid formulations of vancomycin, an antibiotic used to treat Clostridium difficile infection. These formulations are particularly...more

Robins Kaplan LLP

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

Robins Kaplan LLP on

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

A&O Shearman

Overlapping Range Presumption Not Applied Given Specified Doses Administered At Specified Times

A&O Shearman on

On July 8, 2025, the U.S. Court of Appeals for the Federal Circuit affirmed the validity of a Janssen patent, finding that Teva did not meet its burden to prove obviousness. In so doing, the Federal Circuit provided...more

Jones Day

Discretionary Denial of IPR Institution Due to Advanced Hatch-Waxman Litigation

Jones Day on

In a recent decision, the Patent Trial and Appeals Board (“PTAB”) exercised its discretion under 35 U.S.C. § 314(a) to deny institution of an inter partes review (“IPR”) after applying the Fintiv factors, despite Petitioner’s...more

Venable LLP

Spotlight On: Humira® (adalimumab) / Amjevita™ (adalimumab-atto) / Cyltezo® (adalimumab-adbm) / Hyrimoz™ (adalimumab-adaz) /...

Venable LLP on

Adalimumab Challenged Claim Types in IPR and Litigation: Claims include those challenged in litigations and IPRs. Claims are counted in each litigation and IPR, so claims from the same patent challenged in multiple...more

Jones Day

USPTO Acting Director Denies IPR Institution Based on "Settled Expectations"

Jones Day on

Under a new U.S. Patent and Trademark Office ("USPTO") policy issued in March 2025, pre-institution inter partes review ("IPR") proceedings are now bifurcated, consisting of a first phase in which the director considers...more

Goodwin

Regeneron Files Another Complaint Against Amgen in Aflibercept BPCIA Litigation

Goodwin on

On June 17, 2025, Regeneron Pharmaceuticals, Inc. (“Regeneron”) filed another complaint against Amgen Inc. (“Amgen”) under the BPCIA, alleging that Amgen’s aflibercept biosimilar, PAVBLU®, infringes U.S. Patent No. 12,331,099...more

Venable LLP

Spotlight On: Biosimilar Litigations - June 2025

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Biosimilar Litigations include litigations relating to biosimilar/follow-on products of CDER-listed reference products. Litigations between biosimilar applicants/manufacturers and reference product sponsors as well as...more

Knobbe Martens

Federal Circuit Review | May 2025

Knobbe Martens on

In Jazz Pharmaceuticals, Inc. v. Avadel Cns Pharmaceuticals, LLC, Appeal No. 24-2274, the Federal Circuit held that injunctions prohibiting the initiation of new clinical trials for paper NDA drugs before patent expiration...more

McDonnell Boehnen Hulbert & Berghoff LLP

Treprostinil Saga Continues

United Therapeutics Corp. (UTC) and Liquidia Technologies Inc. have been battling for close to a decade over their respective inhaled formulations of treprostinil (UTC's Tyvaso®, Liquidia's Yutrepia™) for treatment of...more

Fish & Richardson

Federal Circuit Reverses Injunction That Barred Clinical Trials in Jazz v. Avadel

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The Federal Circuit recently considered the scope of a permanent injunction that prohibited a drug manufacturer from conducting certain clinical and regulatory activities in Jazz Pharmaceuticals, Inc. v. Avadel CNS...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Statements Made During Prosecution of Parent Application Disavow Claim Scope in Subsequent Patents

The Federal Circuit affirmed a District of Delaware finding of non-infringement in an ANDA litigation due to the patentee’s clear and unmistakable disavowal of claim scope during prosecution. Specifically, the court held that...more

Haug Partners LLP

Federal Circuit Clarifies Safe Harbor from Injunctive Relief in Jazz v. Avadel

Haug Partners LLP on

On May 6, 2025, the U.S. Court of Appeals for the Federal Circuit refined the boundaries of injunctive relief under the Hatch-Waxman Act in its precedential opinion in Jazz Pharms., Inc. v. Avadel CNS Pharms. The decision...more

McDermott Will & Schulte

Hatch-Waxman or Not, Clinical Trials Aren’t Subject to Injunction

Analyzing the permissible scope of an injunction under the Hatch-Waxman Act, the US Court of Appeals for the Federal Circuit reversed the district court’s prohibitions on an open-label extension (OLE) of a then-running...more

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