Top of page
Lawyers

Antonio J. Perez-Marques

Lawyers

Represents U.S. and global clients in critical litigations and government investigations. Extensive experience in Latin America.

Tony represents a broad range of U.S. and non-U.S. corporations and financial institutions in their most critical litigations and government investigations, as well as in complex matters involving both civil and criminal or regulatory elements. His civil litigation practice focuses on class action securities litigation, commercial disputes and cross-border matters, in both court proceedings and arbitration.

Tony’s government and internal investigations practice focuses on the Foreign Corrupt Practices Act (FCPA), economic sanctions and securities enforcement. He has worked on matters involving a wide range of federal and state authorities.

He has conducted investigations and compliance reviews throughout Latin America, and has extensive experience advising U.S., European and Latin American clients on anti-corruption and other compliance matters arising in Latin America. He has also represented clients in civil and criminal matters related to their business in the region.

Experience highlights

Civil Litigation
  • Summary judgment in favor of ExxonMobil as plaintiff in Administrative Procedure Act lawsuit against U.S. Department of Treasury and OFAC, vacating sanctions penalty on due process grounds
  • Dismissal of action to enforce €433 million foreign judgment, in landmark appellate decision recognizing jurisdictional defense to enforcement of foreign money judgments
  • Dismissal of all claims against Eletrobras in federal securities litigation that sought to establish enforceability of $5.6 billion in debt obligations and enjoin the company’s privatization
  • Dismissal of all claims in federal and state securities class actions against XP Inc. concerning its U.S. IPO
  • Dismissal of all claims against a financial institution executive in a whistleblower retaliation suit under Sarbanes-Oxley and Dodd-Frank
  • Dismissal of all claims against a bank in whistleblower retaliation claims under federal and state False Claims Acts
  • Defeat of class certification and partial summary judgment in favor of Morgan Stanley in federal litigation related to a $9 billion structured investment vehicle backed by subprime securities
  • Albemarle in AAA arbitration against Huntsman, arising from Huntsman’s billion-dollar acquisition of pigments businesses from Rockwood Specialties Group
  • EnVen Energy in Texas state court and Delaware Court of Chancery litigation against former company president
  • A global bank in qui tam litigation under the federal and New York False Claims Acts
  • A European oil and gas company as plaintiff in U.S. litigation against sovereign related to expropriation of South American subsidiary
  • The Solomon R. Guggenheim Foundation in various matters
Government Investigations
  • A financial institution in multi-agency sanctions investigation by the DOJ, Manhattan District Attorney, bank regulators and OFAC
  • Standard & Poor’s Ratings Services in SEC and state attorney general investigations
  • Real estate firm in investigation by New York Attorney General of alleged violations of rent stabilization laws
  • Siemens in landmark SEC and DOJ FCPA investigations and development of state-of-the-art FCPA compliance program
Pro Bono
  • Dismissal of indictment on Fourth Amendment grounds before New York Court of Appeals
  • Representation of Everytown for Gun Safety and Prosecutors Against Gun Violence as amici curiae before U.S. Supreme Court and other appellate courts
View all experience

Credentials

Recognition

Benchmark Litigation – New York, Future Star

Education
J.D., New York University School of Law
  • Florence Allen Scholar
  • cum laude
A.B., Princeton University
  • magna cum laude
Professional history
  • Partner, 2011-present
  • Associate, 2002-2011
Qualifications and admissions
  • State of New York
  • U.S. Court of Appeals, First Circuit
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. Court of Appeals, Second Circuit
  • U.S. District Court, E.D. New York
  • U.S. District Court, S.D. New York
  • U.S. Supreme Court
Back to top