News & Analysis as of

Patent Infringement Pharmaceutical Patents Generic Drugs

Robins Kaplan LLP

Mallinckrodt Pharms. Ireland Ltd. v. Airgas Therapeutics LLC

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INOMax® (nitric oxide) - Case Name: Mallinckrodt Pharms. Ireland Ltd. v. Airgas Therapeutics LLC, Civ. No. 22-1648-RGA, 2025 WL 472557 (D. Del. Feb. 12, 2025) (Andrews, J.)  Drug Product and Patent(s)-in-Suit: INOMax® (nitric...more

Robins Kaplan LLP

Janssen Prods., L.P. v. EVER Valinject GmbH

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Yondelis® (trabectedin) - Case Name: Janssen Prods., L.P. v. EVER Valinject GmbH, Civ. No. 24-7319, 2025 WL 639380 (N.D. Ill. Feb. 27, 2025) (Harjani, J.)  Drug Product and Patent(s)-in-Suit:  Yondelis® (trabectedin); U.S....more

McDonnell Boehnen Hulbert & Berghoff LLP

Metacel Pharmaceuticals LLC v. Rubicon Research Private Ltd. (Fed. Cir. 2025)

The Federal Circuit affirmed a District Court decision that the label for a generic drug obtained from an ANDA would not induce infringement by reciting optional drug storage conditions the read on the NDA holder's Orange...more

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

A&O Shearman

Federal Circuit Affirms Findings Of Non-Obviousness And Infringement Of Method Of Treatment Patent Claiming Dosing Regimen For...

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On March 28, 2025, the United States Court of Appeals for the Federal Circuit issued an opinion affirming the United States District Court for the District of New Jersey decision that Mylan Laboratories Ltd. (“Mylan”) induced...more

Venable LLP

Spotlight On: Neulasta® (pegfilgrastim) / Fulphila® (pegfilgrastim-jmdb) / Udenyca® (pegfilgrastim-cbqv) / Ziextenzo®...

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Pegfilgrastim 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

Venable LLP

Spotlight On: Enbrel® (etanercept) / Erelzi® (etanercept-szzs) / Eticovo® (etanercept-ykro) - April 2025

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Etanercept 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

Robins Kaplan LLP

Janssen Pharms., Inc. v. Mylan Labs. Ltd.

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Invega Trinza® (paliperidone palmitate) - Case Name: Janssen Pharms., Inc. v. Mylan Labs. Ltd., No. 2023-2042, 2025 WL 946390 (Fed. Cir. Mar. 28, 2025) (Circuit Judges Dyk, Prost, and District Judge Goldberg presiding;...more

MoFo Life Sciences

In Patent Prosecution, You Have the Right to Remain Silent. Anything You Say Can and Will Be Used Against You in the Court of Law

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While a Miranda warning isn’t given prior to starting substantive examination, perhaps it should be. In Azurity Pharmaceuticals, Inc. v. Alkem Laboratories, Ltd., a precedential decision issued on April 8, 2025, the Federal...more

Venable LLP

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

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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

Alston & Bird

Patent Case Summaries | Week Ending April 11, 2025

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Azurity Pharmaceuticals, Inc. v. Alkem Laboratories Ltd., No. 2023-1977 (Fed. Cir. (D. Del.) Apr. 8, 2025). Opinion by Murphy (sitting by designation), joined by Moore and Chen. Azurity owns a patent directed to non-sterile...more

McDermott Will & Emery

Prosecution Disclaimer Alive and Well, Especially in Closed Claim

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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

Venable LLP

Spotlight On: Lantus® / Lantus® SoloSTAR® (insulin glargine recombinant) / Basaglar® (insulin glargine) / Semglee® (insulin...

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Insulin Glargine 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

Irwin IP LLP

“Consisting of” Consequences: Prosecution Disclaimers Outweigh Pretrial Stipulations 

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The Federal Circuit recently opined on whether a stipulation in litigation can overcome a disclaimer made during the prosecution history of a patent. The Hatch-Waxman Act allows generic drug companies to use clinical results...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

Irwin IP LLP

Federal Circuit Finds Loophole Allowing Patents To Cover Later Developed Technologies

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In re Entresto, 125 F.4th 1090 (Fed. Cir. 2025) - After Novartis’ patent on the blockbuster blood pressure medication Entresto was found invalid at the district court for covering technology that was developed after the...more

A&O Shearman

AstraZeneca refused interim injunction on SPC for blockbuster diabetes treatment against Glenmark but swiftly obtains permission...

A&O Shearman on

On March 28, 2025, Michael Tappin KC, sitting as a deputy judge of the High Court, refused to grant AstraZeneca (“AZ”) an interim injunction to restrain Glenmark from launching in the U.K. a generic version of its type 2...more

Foley & Lardner LLP

GLP-1 Receptor Agonists: Drug Litigation Overview and Trends

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The recent uptick and rise in popularity of GLP-1 drugs for addressing weight loss and obesity has led to an increase in U.S. litigation involving this class of drugs. Over the past few years, litigation has focused on a wide...more

Eversheds Sutherland (US) LLP

Tax Bytes: Week of March 24, 2025

Tax developments - Actavis and deductible expenses - On March 21, 2025, the Court of Appeals for the Federal Circuit released a decision in Actavis Laboratories FL, Inc. v. United States, holding that taxpayers could...more

Venable LLP

Spotlight On: Biosimilar Litigations - March 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

BakerHostetler

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

BakerHostetler on

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

Fish & Richardson

Recent Decisions and FTC Challenges Dictate Caution When Listing Patents in the Orange Book

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In October 2023, Teva Pharmaceuticals filed a patent infringement lawsuit against Amneal Pharmaceuticals alleging that their generic version of Teva’s ProAir® HFA inhaler infringed upon the asserted claims of U.S. Patent Nos....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

ANDA Litigation Settlements - Winter 2024

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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....more

Robins Kaplan LLP

Janssen Pharms., Inc. v. Teva Pharms. USA, Inc.

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Invega Sustenna® (paliperidone palmitate) - Case Name: Janssen Pharms., Inc. v. Teva Pharms. USA, Inc., Civ. Nos. 18-734, 19-16484, 2024 WL 5135666 (D.N.J. Dec. 17, 2024) (Cecchi, J.)  Drug Product and Patent(s)-in-Suit:...more

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