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

Shelled Eggs
Antitrust, Commodities
On June 8, Lowey Dannenberg Chairman Vincent Briganti was appointed as Co-Lead Counsel for the Direct Purchaser Plaintiffs in In Re: Shell Eggs Antitrust Litigation, No. 3:26-md-03175-JDP (W.D. Wisc.) Plaintiffs […]

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. […]
News
Lowey Dannenberg, P.C. Ranked #1 Law Firm Based on Antitrust Settlements
Lowey Dannenberg P.C. is proud to announce that the firm has been included in this year’s ISS Securities Class Action Services (“ISS SCAS”) Top Plaintiff Law Firms of 2023 report, as the Firm was ranked #1 Law Firm based on Antitrust Settlements. The Firm topped the...
Blog
What are Securities Class Action About?
A securities class action is a lawsuit filed by investors who bought or sold a company’s publicly traded securities within a specific period of time. Investors then suffered an economic loss as a violation of securities laws. Instead of each shareholder bringing an individual action, one or more...





