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
Professional Recommendations
Recent Cases

Roche v. Aetna, Inc.
Healthcare, Notable
Lowey Dannenberg is defending Aetna in a class action related to state anti-subrogation laws. Minerley v. Aetna Inc., et al., 13-cv-1337 (D.N.J.). Lowey Dannenberg has defended and won dismissal of several similar class action lawsuits against health insurance clients: Wurtz v. Rawlings Co., LLC, 2016 WL 7174674 (E.D.N.Y. Nov. 17, 2016); Meek-Horton v. Trover, et al., 910 F.Supp. 2d 690 (S.D.N.Y. 2013); Potts v. Rawlings Co. LLC, 897 F.Supp. 2d 185 (S.D.N.Y. 2012).

Federated Investment Management Company, et al., v. Republic of Argentina
Antitrust
Lowey obtained emergency injunctive relief on behalf of Federated Investors, one of the largest investment firms in the country with over $363 billion in assets under management, preventing the Government of Argentina from canceling outstanding bonds with a face value of more than $500 million, which had been erroneously tendered by those bondholders. Federated Investment Management Company, et al., v. Republic of Argentina, et al., 10 Civ. 4324 (S.D.N.Y. 2010) (Griesa, J.).

Juniper Networks
Notable
Lowey Dannenberg served as lead counsel, representing the New York City Pension Funds and related class members, alleging that Juniper Networks, Inc. fraudulently concealed the backdating of millions of stock options, resulting in a $900 million financial restatement.
News
Lowey Dannenberg Appointed Co-Lead Counsel in Lumen Technologies, Inc. Stockholder Derivative Litigation
On April 21, 2025, Hon. Kayla D. McClusky, United States Magistrate Judge, appointed Lowey Dannenberg, P.C. as the Co-Lead counsel representing Plaintiffs and a proposed class in the consolidated action: In re Lumen Technologies, Inc. Stockholder Derivative…
Blog
Don’t Press Replay: Third Circuit Rules in Favor of User Privacy with Popa Decision
In August 2022, the Third Circuit handed down a decision addressing both exceptions to and the definition of “intercept” under the Pennsylvania Wiretapping and Electronic Surveillance Control Act (WESCA).[1] Popa v. Harriet Carter Gifts, Inc. , 45 F. 4th 687 (3d Cir. 2022), reh’g granted and…





