Kevin J. O’Brien

  • Partner

Kevin J. O’Brien is an experienced trial lawyer and former Assistant U. S. Attorney, who specializes in white-collar criminal defense, commercial and securities litigation on behalf of plaintiffs and defendants, regulatory enforcement cases, and arbitrations.

Kevin has tried over 25 court cases and numerous arbitrations to verdict. His most recent trial victory was in the 2019 Platinum Partners criminal case, in which Kevin and a team of Ford O’Brien lawyers obtained a judgment of acquittal across the board for former Platinum Chief Executive Officer Joseph SanFilippo after a nine-week trial. SanFilippo faced five felony counts for alleged securities fraud, investment adviser fraud, and conspiracy. Thanks to the efforts of Kevin and Ford O’Brien, he was acquitted on all counts and walked out of court a free man.

Kevin’s other victories include Central Illinois Public Service v. Allianz, et al., in which he won a $100,000,000 jury verdict for a public utility against several insurance companies following a three-month trial; State of New York, et al. v. Manhattan Eye, Ear & Throat, in which he succeeded in blocking the sale of a hospital on behalf of a large hospital corporation; United States v. Michael Rigas, a massive criminal securities-fraud case, where Kevin as co-counsel obtained an acquittal verdict on some counts and a hung jury on the remainder, following a six-month jury trial; and commercial arbitration awards totaling in excess of $30 million.

In addition to his trial practice, Kevin has successfully represented clients facing criminal grand jury investigations and potential enforcement action by the SEC, FINRA, the FDA, the FDIC, and other regulatory organizations. He also has represented individuals and institutions in commercial litigation involving mortgage-backed securities, debt restructuring, commercial real-estate disputes, and investment banking fees, among other matters. Kevin’s practice also includes FINRA customer-member arbitrations.

Kevin was previously a litigation partner at Dechert LLP, and a name partner at Harris, O’Brien, St. Laurent & Chaudhry, LLP. He began his career as an Assistant U.S. Attorney in the Eastern District of New York, where he successfully tried several prominent public corruption cases. He has served as Chief Counsel to the New York State Commission on Government Integrity; and as Associate Independent Counsel in the Office of Independent Counsel in Washington, D.C. Kevin has also devoted significant time to pro bono representation, including a successful appeal of a death penalty sentence to the Supreme Court of Pennsylvania.

He is a graduate of Harvard College, summa cum laude; Balliol College, University of Oxford; and Harvard Law School.

Kevin is a frequent lecturer and author and has been published in the National Law Journal, the New York Law Journal, Law360, the Legal Times of Washington, and other legal publications. He has lectured for the Practicing Law Institute and other organizations on criminal defense, securities law and business law topics.

Kevin is also the author of a book, The Art of the Campaign: How Lincoln Won the Lincoln-Douglas Debates, published in 2013.

Kevin is admitted to the bar of New York.

Areas Of Practice

  • White Collar Criminal Defense
  • Securities Litigation
  • Commercial Litigation
  • FINRA customer-member arbitrations

Bar Admissions

  • New York


  • Harvard Law School, Cambridge, Massachusetts
    • J.D. - 1979
  • Balliol College, University of Oxford
    • M.Phil. - 1976
  • Harvard College
    • A.B. - 1974
    • Honors: summa cum laude

Published Works

  • National Law Journal
  • New York Law Journal
  • Law360
  • Legal Times
  • The Art of the Campaign: How Lincoln Won the Lincoln-Douglas Debates, 2013

Representative Cases

  • United States v. Joseph SanFilippo
  • Central Illinois Public Service v. Allianz, et al.
  • State of New York, et al. v. Manhattan Eye, Ear & Throat
  • United States v. Michael Rigas

Past Employment Positions

  • U.S. Attorney's Office for the Eastern District of New York, Assistant U.S. Attorney
  • New York State Commission on Government Integrity, Chief Counsel
  • Office of Independent Counsel, Washington, D.C., Associate Independent Counsel
  • Dechert LLP, Litigation Partner
  • Harris, O’Brien, St. Laurent & Chaudhry, LLP, Name Partner
Kevin’s most recent victory was an across-the-board acquittal for his client in the 2019 Platinum Partners securities-fraud case.

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