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Mike Sheehan focuses his practice on the representation of clients in commercial litigation, including general commercial litigation and litigation and disputes involving healthcare and pharmaceutical matters, manufacturers of heavy equipment and machinery, and aircraft and aircraft component manufacturers. Mike also advises on government regulatory matters and conducts corporate internal investigations on behalf of major corporations, including Fortune 500 companies.

Mike provides “expert advice,” and his clients have “no trepidation or second thoughts about turning to him for guidance in their most sensitive matters, and highly recommend him for any commercial dispute,” according to The Best Lawyers in America®.

Prior Employment

  • United States Marine Corps, 1968-1972
  • Assistant District Attorney, Tarrant County, Texas, 1979-1981
  • Assistant U. S. Attorney, Northern District of Texas; criminal prosecution and 5th Circuit appeals, 1982-1984

Honors & Affiliations


  • The Best Lawyers in America® by Woodward/White Inc. (Healthcare, Commercial Litigation, Litigation-Mergers & Acquisitions), 2008-2021
  • Texas Super Lawyers® by Thomson Reuters (Business Litigation, Healthcare, General Litigation, Civil Litigation Defense), 2004, 2013-2020
  • “Top Attorneys” (Business/Commercial Litigation, Civil Law & Litigation) by Fort Worth, Texas magazine, 2002-2009, 2012-2013, 2015-2019
  • Irish Legal 100 by Irish Voice; 2017-2018
  • 2013 Power Attorney, Fort Worth Business Press
  • Tarrant County Attorneys of Excellence and Elite 100 (Commercial Litigation), Fort Worth Business Press; 2003-2005


  • Member, American Board of Trial Advocates
  • Life Fellow, Texas Bar Foundation
  • Member, Tarrant County Bar Association
  • Emeritus, Eldon B. Mahon Inn of Court
  • Sustaining Charter Fellow and Former Chairman, Tarrant County Bar Foundation
  • Member, American Health Lawyers Association (AHLA)
  • Member, American Society for Pharmacy Law

Education & Admissions


  • J.D., 1979, with honors, The University of Texas School of Law
  • B.A., 1976, with high honors, Texas Tech University
  • A.A., with highest honors, Santa Ana College


  • New York
  • Texas
  • All State Courts in Texas
  • U.S. Court of Appeals for the Fifth Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Northern District of Texas
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Southern District of Texas