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Mark T. Doerr


Mark T. Doerr is a partner in the Litigation practice group at Greenspoon Marder. His work focuses on investigating, litigating, and resolving business disputes involving alleged deceptive practices and fraud. Mr. Doerr represents individuals and businesses of all sizes in a range of matters involving breaches of contract, fraud, RICO claims, theft of trade secrets, breaches of fiduciary duty, and First Amendment and Constitutional issues.

Mr. Doerr has significant expertise in intellectual property and media matters relating to trademarks, libel, false light invasion of privacy, right of publicity, and other reputational and defamation-related concerns affecting publishers and the subjects of published content.

Mr. Doerr has conducted and managed investigations in response to regulatory and government inquiries regarding accounting fraud, LIBOR manipulation, securities fraud, common law fraud, healthcare fraud, the Foreign Corrupt Practices Act, and the False Claims Act.

Mr. Doerr also has substantial experience with transnational disputes involving multi-billion-dollar claims and judgments in foreign jurisdictions. He has represented companies of all sizes in domestic and foreign investigations, litigations, and arbitrations spanning multiple jurisdictions at the same time.  Mr. Doerr has brought and defended numerous Section 1782 actions for discovery relating to disputes in non-U.S. jurisdictions.

Mr. Doerr served as law clerk to the Honorable Pamela K. Chen of the United States District Court for the Eastern District of New York.

Court Admissions

  • U.S. District Court, Southern District of New York
  • U.S. District Court, Eastern District of New York
  • U.S. District Court, Eastern District of Michigan
  • U.S. District Court, Colorado
  • U.S. District Court, Southern District of Texas

Bar Admissions

  • New York
  • Illinois


  • J.D., with honors, Columbia Law School
    • Harlan Fiske Stone Scholar;
    • Columbia Human Rights Law Review, Articles Editor
  • B.A., with distinction, University of Illinois
    • Philosophy Departmental Honors
    • Dean’s List
    • Edmund J. James Scholar


  • “Need Foreign Discovery? Consider Little-Known Section 1782,” A.B.A. Litig. J., Vol. 39, No. 2, Spring 2013
  • “Note, Not Guilty? Go To Jail. The Unconstitutionality of Acquitted Conduct Sentencing,” 41 Colum. Hum. Rts. L. Rev. 235–273, 2009
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