John J. Halloran, Jr., P.C.

Representative Cases

John Halloran serves as a court-appointed Special Referee to hear and report in attorney disciplinary proceedings commenced by the Grievance Committee for the Ninth Judicial District (Hudson Valley) and the Grievance Committee for the Tenth Judicial District (Nassau and Suffolk Counties). See, e.g., Matter of Kurtzrock, 192 A.D.3d 197, 138 N.Y.S.3d 649 (2d Dep’t 2020); Matter of O'Hagan, 183 A.D.3d 252, 121 N.Y.S.3d 360 (2d Dep’t 2020); Matter of Goldstein, 198 A.D.3d 103, 149 N.Y.S.3d 918 (2d Dep’t 2021); Matter of Greebel, 194 A.D.3d 202, 144 N.Y.S.3d 460 (2d Dep’t 2021); Matter of Flaum, 201 A.D.3d 130, 157 N.Y.S.3d 558 (2d Dep’t 2021); Matter of Newman, 194 A.D.3d 15, 142 N.Y.S.3d 106 (2d Dep’t 2021); Matter of Kulak, 206 A.D.3d 149, 170 N.Y.S.3d 204 (2d Dep’t 2022); Matter of Kelliher, 204 A.D.3d 119, 164 N.Y.S.3d 216 (2d Dep’t 2022); Matter of Genova, 208 A.D.3d 33, 171 N.Y.S.3d 179 (2d Dep’t 2022); Matter of Lyons, 210 A.D.3d 94, 177 N.Y.S.3d 161 (2d Dep’t 2022). John also serves as a court-appointed Special Master for the Mandatory Civil Appeals Mediation Program of the Second Judicial Department, in which capacity he has mediated dozens of cases since 2018.

Mr. Halloran has represented the United States, foreign states and entities, and private companies and individuals in courts in New York and across the country, often focusing on precedent-setting cases. His notable litigation assignments include acting as counsel to:

  • Attorney General of the United States in a successful civil penalty action in the Western District of Virginia and the U.S. Court of Appeals for the Fourth Circuit involving the largest bank collapse in the history of the Commonwealth of Virginia.
  • Secretary of the Department of the Treasury in the first civil penalty action brought under the Bank Secrecy Act, a key anti-money laundering statute; consent judgment entered for the Government.
  • FBI Director in a civil case raising a First Amendment challenge to actions by the FBI Director in applying DOJ policy concerning the composition of SWAT teams; Mr. Halloran successfully defended the motion for a preliminary injunction at a bench trial in Louisville, Kentucky; complaint was later dismissed and dismissal was affirmed by the U.S. Court of Appeals for the Sixth Circuit.
  • Foreign states and entities in civil litigation in the U.S. courts at all levels challenging allegedly illicit, cross-border conduct by multinational companies.
  • Attorney General of Canada v. R.J. Reynolds Holdings, Inc., 268 F.3d 103 (2d Cir. 2001),  aff’g, 103 F. Supp. 2d 134 (N.D.N.Y. 2000) (McAvoy, J.) (lead counsel for amicus curiae European Community (now the European Union) in support the Canadian government’s claims arising from alleged illicit trade at the US-Canada border).
  • U.S. financial institution in liquidation proceedings and civil litigation connected to the collapse of the Bank of Credit and Commerce International (BCCI), which included litigation in the District Court for the District of Columbia, Southern District of New York, and the U.S. Court of Appeals for the Second Circuit.
  • CEO of a large defense contractor in a shareholders' derivative action challenging the company's conduct in acquiring the rights to launch an overseas satellite; complaint dismissed and dismissal affirmed on appeal in D.C. federal courts.
  • Large defense contractor in a RICO and antitrust action in the Southern District of New York and the U.S. Court of Appeals for the Second Circuit; after limited discovery, summary judgment was awarded to defendants and judgment was affirmed on appeal.
  • Principal shareholder in action in New York trial and appellate courts in action to compel specific performance of shareholders' agreement in a contest for corporate control of a closely-held corporation; Mr. Halloran successfully argued the summary judgment motion and appeal before the Second Department.
  • American Institute of Certified Public Accountants, appearing as amicus curiae in the U.S. Supreme Court, New York Court of Appeals, Supreme Court of Georgia and other federal and state appellate courts across the country.
  • Indigent criminal defendants, on pro bono assignment by the New York Court of Appeals and the Appellate Division.

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