Joseph Mansilla is an associate at Lowey Dannenberg, P.C., whose experience covers various practice areas, including antitrust, securities, data breach, and healthcare law.

Notable Cases:

Bond Rigging: Mr. Mansilla was part of the Lowey Dannenberg team that represented the Treasurer of the Commonwealth of Pennsylvania as court appointed co-lead counsel in In re GSE Bonds Antitrust Litigation, Case No. 19-cv-1704 (JSR) (S.D.N.Y.), a class action against sixteen of the world’s largest banks alleging a conspiracy to fix the prices of debt securities issued by government sponsored entities. To date, Plaintiffs have reached settlements totaling more than $386 million, resulting in a substantial recovery for bond investors nationwide.

Anticompetitive No-poach Agreements: Mr. Mansilla is part of the team that represents plaintiff employees of Papa John’s who were injured by anticompetitive and unlawful no-hire, no-poach agreements between Papa John’s and its franchisees. In re Papa John’s Employee & Franchisee Employee Antitrust Litig., Case No. 3:18-cv-00825 (JHM) (W.D. Ky.)

Privacy and Security: Mr. Mansilla assists with the law firm’s HIPAA compliance efforts and is part of the team that leads the prosecution of Cohen v. Northeast Radiology, P.C., Case No. 20-cv-01202 (VB) (S.D.N.Y.), a class action on behalf of 1.2 million patients impacted when a radiology provider’s servers were allegedly breached.

Healthcare: Mr. Mansilla is part of the team that represents Humana in its breach-of-contract, RICO, fraud and other claims against Celgene Corporation for the latter’s off-label marketing of its Revlimid drug. Humana Inc., v. Celgene Corporation, Case No. 7:18-cv-00064-KKC (Ky.Cir.Ct.)


Mr. Mansilla is a JD graduate of Cornell Law School, where he served as a Teaching Assistant for Cornell’s undergraduate antitrust class and a Research Assistant for an international law professor. He was an intern at AT&T and SAS Institute during his law-school summers, working on projects involving arbitration, the Foreign Corrupt Practices Act (FCPA), and General Data Protection Regulation (GDPR).

Before law school, Mr. Mansilla spent four years at the World Bank in Washington, DC. There, he was part of a three-person team in a million-dollar grant operation to address sex- and gender-based violence in Africa. He also helped raise funds through the Nordic Trust Fund to conduct research on human rights, and he was an active member of the LGBT staff association. He was hired by the World Bank for his work on youth-led grassroots advocacy efforts in his home island of Mindanao in the Philippines, focusing on social accountability and conflict resolution.

Mr. Mansilla is an active member of the New York State Bar Association (NYSBA) Unilateral Conduct Committee.


J.D. Cornell Law School

Bar/Court Admissions:

New York