More than 50 years of landmark results
Since 1967, Lowey Dannenberg has represented investors and major corporations in complex litigation, recovering billions of dollars on their behalf.Solutions for Complex Cases
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Recent Cases

Amitza
Healthcare
Lowey Dannenberg, on behalf of named plaintiff Premera Blue Cross, is leading a class on behalf of Third-Party Payers of Amitiza (Lubiprostone) against Takeda Pharmaceutical Company Ltd. and related entities. […]

Amgen
Health Care, Healthcare
On September 30, 2025, the U.S. District Court for the Eastern District of Virginia largely denied Amgen’s motion to dismiss in CareFirst of Maryland Inc. et al. v. Amgen Inc. […]

Adobe Class Action
Data Breach and Privacy, Existing Cases
On April 3, 2025, Lowey filed a data privacy class action against Adobe, Inc. alleging it used consumers’ personally identifiable information and online activity to create user profiles without obtaining user consent. The action alleges Adobe used this information to facilitate targeting advertising on behalf of its clients.
News
Lowey Dannenberg P.C., a preeminent law firm in obtaining redress for consumers and investors, is investigating claims of violations of federal securities laws on behalf of investors of Penumbra Inc. (“Penumbra” or the “Company”) (NYSE: PEN).
Penumbra, Inc. designs, develops, manufactures, and markets medical devices. The Company offers peripheral vascular and neurovascular devices that help patients suffering from stroke and other neurovascular diseases.
Blog
AECPA’s Failure to Address Monopolists’ Abuse of Arbitration Is Bad For Everyone
Last month I had the opportunity to help organize a CLE webinar with the New York State Bar Association on the topic of a new Senate legislation, the Anticompetitive Exclusionary Conduct Prevention Act (AECPA). The discussion was led by leading antitrust academics and practitioners: Seton Hall…





