Brian Mangan is a partner in WSHB's New York office, where he focuses his practice on first party property and builder's risk claims on behalf of the London Market.

Brian has obtained successful outcomes for clients in a wide variety of matters spanning from commercial litigation and bankruptcy to intellectual property and election law. He has extensive experience in all phases of litigation, from pre-litigation negotiation, pre-trial discovery, motion practice, mediation and trial in federal and state courts across the country. Brian specializes in complex matters of first impression and his work has resulted in numerous published decisions and articles in the New York Law Journal.

He obtained his law degree from Brooklyn Law School, where Brian was a Dean’s Merit and Richardson Scholar. While in law school, he was a judicial intern for the Honorable Joan Azrack, U.S. District Court for the Southern District of New York. Brian graduated from Marist College with a Bachelor of Science in Finance and a minor in Music. He is licensed to practice law in New York State and the United States District Court for the Southern District of New York.

Brian is a member of the New York County Democratic Committee and was a delegate candidate for a 2020 Democratic Presidential campaign. He was a member of the New York City Bar's Litigation Committee and co-chaired the Lunch with a Judge Program from 2017-2020.


  • Obtained dismissal of $10+ million COVID-19 business interruption claim. Clay Hotel P'ship v. Tokio Marine Kiln Syndicate 1880, 2021 U.S. Dist. LEXIS 224480 (S.D. Fla. 2021)
  • Advised delegate candidates and advocacy groups in a lawsuit against the New York State Board of Elections in their lawsuit to reinstate the 2020 Presidential Primary. Obtained injunction and success on the merits. Yang v. Kellner, 458 F. Supp. 3d 199 (S.D.N.Y. 2020)
  • Successfully obtained dismissals of matters in California, Massachusetts, Hawaii and Texas for lack of personal jurisdiction and forum non conveniens. See e.g. Knox v. MetalForming, Inc., 303 F. Supp. 3d 179 (D. Mass 2018); Trokamed GmbH v. Vieira, 2018 Tex. App. LEXIS 3901 (Tex. App. 2018)
  • Successfully domesticated foreign arbitral judgment in Washington. See Purus Plastics GmbH v. Eco-Terr Distrib., Inc., 2018 U.S. Dist. LEXIS 104211 (W.D. Wash. 2018)
  • Represented heirs of Holocaust victims, successfully recovering Nazi-looted artwork. See Reif v Nagy, 149 A.D.3d 532 (App. Div. 1st Dept. 2017)
  • Successfully obtained sanctions against signal pirates under the Federal Communications Act, Lanham Act and DMCA. See Joint Stock Co. v. Infomir LLC, 2017 U.S. Dist. LEXIS 165702 (S.D.N.Y. 2017)
  • Successfully “clawed back” preferential transfers and fraudulent conveyances as Special Counsel to Chapter 7 Trustee. See Tese-Milner v. Edidin & Assocs., 490 B.R. 84, 104 (Bankr. S.D.N.Y. 2013)



  • Brooklyn Law School (J.D., 2009)
  • Marist College (B.S., 2005)

Licensed to Practice in

  • New York
  • U.S. District Court, Southern District of New York



  • Daphne Zhang, "Insurer Escapes Coverage for Fla. Biz’s $9.6M Virus Losses," November 17, 2021, Law360
  • Matt Stevens and Nick Corasaniti, "New York Must Hold Democratic Presidential Primary, Judge Rules," New York Times 
  • David Handschuh, "New York City Bar Association Hosts 'Lunch With a Judge,'" December 11, 2019, New York Law Journal
  • Brian P. Mangan, "New York Court Applies the HEAR Act, Orders Return of Nazi-Looted Art," May 11, 2018, JDSUPRA
  • William D. Cohan, "Two Schiele Drawings Ordered Returned to Heirs of Nazi Victim," New York Times
  • Jason Grant, "Magistrate Judge Issues Sanctions in Pirating Suit," New York Law Journal, July 21, 2017
  • Brendan Pierson, "Judge Says Man in Egypt Can Be Compelled to U.S. to Testify," New York Law Journal, October 8, 2013

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