Marco A. Dueñas



Marco A. Dueñas is an Associate in the New York office of Labaton Sucharow LLP.  Marco prosecutes complex securities litigation cases on behalf of institutional and individual investors.  Marco has also focused his practice on advising institutional investors on the merits of opting out of pending securities fraud class actions and initiating direct, individual actions against the same defendant(s).  He has further focused his practice on the identification, investigation, and development of emerging cases. 

Marco represents investors in cases related to the protection of the financial markets in trial courts throughout the country and abroad.  In particular, Marco is an integral member of the team leading the Firm’s efforts to litigate securities claims against companies in state courts following the U.S. Supreme Court’s decision in Cyan, Inc. v. Beaver County Employees Retirement Fund.  This includes prosecuting In re ADT Inc. Shareholder Litigation, a case alleging that the offering documents for ADT’s $1.47 billion IPO misrepresented the competition the company was facing from do-it-yourself home security products.  Marco also has substantial trial experience, including litigating In the matter of Nord Anglia Education, Inc., a foreign appraisal action in the Cayman Islands.

Prior to joining Labaton Sucharow, Marco was a Paralegal at a boutique law firm primarily focused on real estate-related transactions and associated business and corporate matters, land use and zoning, and real estate litigation in state and federal courts.  During law school, Marco was a Summer Associate at a magic circle law firm primarily focused on cross-border mergers and acquisitions governed by U.S. law.

Marco is an active member of the New York City Bar Association and the New York State Bar Association.

Marco earned his Juris Doctor, cum laude, from Brooklyn Law School, where he served as Associate Managing Editor and Senior Staff of the Brooklyn Journal of International Law.  Marco was also a member of Brooklyn Law School’s award-winning International Criminal Court Moot Court Competition team, achieving a first place finish in the Americas and Caribbean regional round and reaching the semifinals of the international round (top nine out of 60 teams from 44 countries) held in The Hague, Netherlands.  Marco earned his Bachelor of Sciencesumma cum laude, from Farmingdale State College.

Marco is fluent in Spanish.


2019, New York

U.S. District Court
2019, Southern District of New York
2019, Eastern District of New York