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 and Co-Counsel File Class Action on Behalf of End-Payors for Immunosuppressive Drug Stelara (Ustekinumab)
On December 7, 2023, Lowey Dannenberg, P.C. and its co-counsel, representing named Plaintiff CareFirst BlueCross BlueShield,filed suit against Stelara manufacturer Johnson & Johnson (“J&J”) in the U.S. District Court for the Eastern District of Virginia. The…
Blog
What is a Securities Class Action?
A security class action is a lawsuit brought on behalf of a group of investors who have suffered a financial loss in a particular security, such as a stock, bond, or investment fund. Typically, the loss occurs because of fraudulent conduct or materially false statements made to investors in SEC…





