Civil Litigation & Dispute Resolution

John Halloran's practice focuses on complex civil litigation and dispute resolution. As a trial attorney with the U.S. Department of Justice, he represented the United States in landmark civil litigation throughout the nation, including cases involving bank fraud, money laundering, and constitutional law. In private practice, he has represented individuals, multinational corporations, and foreign states and governmental entities, including the European Union and its Member States. Mr. Halloran has also served as counsel of record in the nation's leading appellate courts, including the U.S. Supreme Court, U.S. Court of Appeals for the Second Circuit, New York Court of Appeals, and the Appellate Division of the Supreme Court (First and Second Departments). Mr. Halloran has been appointed to serve as a Special Referee for the Grievance Committee for the Ninth Judicial District, and as a Special Master for the Mandatory Civil Appeals Mediation Program of the Second Judicial Department.