Michael Doyen

Munger, Tolles & Olson LLP

$ $$$

Grand Lower 350
Los Angeles 90071 CA US

Michael R. Doyen is a litigation partner in the Los Angeles office of Munger, Tolles & Olson. In 2015, Mr. Doyen was among the attorneys recognized with a California Lawyer Attorneys of the Year Award for his successful defense of Transocean.

Mr. Doyen represents international corporations, corporate officers and national and international law firms in major criminal and civil matters in the United States, Central and South America and Europe. He has worked in cases involving large-scale disasters, financial and otherwise:  from the collapse of the nuclear industry, the junk bond market and the savings & loan crisis in the 1980s to the dot-com bubble, financial meltdown and Gulf Coast hurricanes and oil spill of the early 21st century.

Mr. Doyen specializes in criminal and regulatory investigations and related civil litigation; he handles all phases, formal and informal, from the earliest days of an investigation through trial. He also represents law firms and lawyers in malpractice and malpractice actions (and, occasionally, in criminal matters). Most of his law firm clients would prefer their names not be mentioned here.

Mr. Doyen has worked on many matters touching on warfare, from libel and reporting to war crimes. Mr. Doyen speaks and writes about strategic issues and the nature of litigation; he has served as a Visiting Fellow at Harvard Law School and is (eternally) trying to finish a book on war and litigation.

Key Representations:

  • Transocean and certain of its subsidiaries, which owned or operated the Deepwater Horizon drilling rig, in litigation arising from the April 20, 2010 BP oil spill in the Gulf of Mexico.
  • An AmLaw 20 law firm in trying and defeating a $2 billion legal malpractice claim against it. To deal with complex and competing privilege issues in this three-cornered lawsuit, counsel traveled around the country with the trial judge, taking trial testimony from attorneys in New York, Florida and San Francisco.


  • Harvard Law School (J.D., 1982); articles editor, Harvard Law Review, 1981 – 1982
  • UC Berkeley (B.A., magna cum laude, 1979) Phi Beta Kappa

Bar Admissions :

  • California
  • New York


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Grand Lower 350
Los Angeles 90071 CA US
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New York 10006 NY US