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Antonio J. Perez-Marques


Antonio J. Perez-Marques

Civil Litigation
New York

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 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 anti-money laundering, 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
  • Summary judgment in favor of global financial institution on all claims, and dismissal of all claims against senior executive, in whistleblower retaliation suit under Sarbanes-Oxley and Dodd-Frank
  • Dismissal of action against Enel SpA to enforce €433 million foreign judgment, in landmark appellate decision recognizing for the first time 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 global 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 subprime-backed investment vehicle
  • Dismissal of qui tam action against global bank 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
  • U.S. broker-dealer in connection with multi-agency anti-money laundering investigation related to Latin America wealth management business
  • 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
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Benchmark Litigation – New York, Future Star


J.D., New York University School of Law
  • cum laude
  • Florence Allen Scholar
A.B., Princeton University
  • magna cum laude

Professional history

  • Davis Polk since 2002

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, Colorado
  • U.S. District Court, E.D. New York
  • U.S. District Court, S.D. New York
  • U.S. Supreme Court
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