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Michael DeMarco

Fax +1.617.261.3175
Fax +1.212.536.3901

Mr. DeMarco is a partner whose practice concentration is civil litigation and white collar crime. He is a trial lawyer and has tried many cases in civil and criminal courts. Mr. DeMarco is a Fellow of The International Academy of Trial Lawyers in which fellowship is extended by invitation only to 500 of the best trial lawyers in the United States and 30 foreign countries.

Mr. DeMarco's clients include pharmaceutical manufacturers in cases that are as diverse as product liability claims and the pharmaceutical industry drug pricing litigation (AWP MDL-1456). He also represents medical device manufacturers in product liability litigation and public companies in securities class actions. Mr. DeMarco has also represented a petroleum company involved in mass tort litigation.

Mr. DeMarco is currently advising The Kingdom of Spain concerning the ongoing litigation arising out of the Prestige oil spill off the coast of Spain, resulting in over 4 billion dollars in clean-up costs. Mr. DeMarco has recently tried to a successful verdict a commercial case in the U.S. District Court for the District of Massachusetts (Empire Today, LLC v. National Floors Direct, Inc.; et al., No. 1:08-CV-11999-JLT), as well as a commercial dispute concerning the planning and development of the Armenian Genocide Museum in Washington, DC (The Armenian Assembly of America, Inc., et al. v. Gerard L. Cafesjian, et al., No. 07-1259, 08-255, 08-1254).

Most recently, Mr. DeMarco acted as lead international coordinating counsel for the Republic of Ecuador and their Central Bank in a British Commonwealth Court (Banco Central del Ecuador, et al. v. Ansbacher, et al., CL 648/96). He led the team to a significant victory for The Central Bank of Ecuador after a 20-year litigation against three brothers from one of the country’s wealthiest families. The Central Bank first filed its claim against Conticorp and the Ortega brothers in 1996 and it has since been disputed in more than a dozen hearings in the Bahamas, Ecuador and Florida. The recent ruling by the Judicial Committee of Her Majesty’s Privy Council in London overturned previous verdicts from the Bahamian Supreme Court in 2010 and a Bahamian appeals court in 2012. The court ordered that the defendants must repay US$600 million for loans granted to their bank during the 1990s that they backed with worthless assets.

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Professional Background

Prior to joining the firm, Mr. DeMarco served as an Assistant Register of Deeds, Assistant Recorder (Land Court) Commonwealth of Massachusetts, and Assistant District Attorney, Suffolk County, Boston, Massachusetts, where he prosecuted major crimes. He was appointed Special Assistant Corporation Counsel, City of Boston and was specifically assigned to represent the Mayor of the City of Boston and the Boston Police Commissioner on special assignments including the Boston school desegregation case (Morgan v. Hennigan, et. al.) and police corruption. Mr. DeMarco has been a long-time supporter of the National Judicial College and is currently a Trustee of the College. He has been selected by his peers for inclusion in “2017 Best Lawyers in America” in the practice areas of: Commercial Litigation, White Collar Criminal Defense and Defendants Personal Injury Litigation. Mr. DeMarco has been included in “Best Lawyers in America” for over ten consecutive years. He has also been listed in Law Dragon Magazine’s “500 Leading Lawyers in America” and “500 Leading Litigators in America.” Mr. DeMarco’s peer rating in the Martindale-Hubbell directory is AV® Preeminent (Very High General Ethical Standards and Legal Ability Rating). He has also been recognized by Chambers USA as one of “America’s Leading Lawyers for Business.”


  • Listed as one of America’s Top 100 Attorneys in 2018
  • Listed as a Best Lawyer in America for 20 years
  • Listed as a Massachusetts Super Lawyer since 2004

Professional/Civic Activities

  • Salzburg Music Festival Charitable Foundation (Trustee)
  • Barcelona Global Foundation (Member)
  • International Bar Associates (Member)
  • American Bar Association (Civil Litigation Section)
  • American Bar Association (Standing Committee on Federal Judicial Improvements, 2005 – 2008)
  • American Bar Foundation (Fellow)
  • Boston Bar Association (Litigation Section)
  • Boston Bar Foundation (Society of Fellows)
  • Massachusetts Bar Foundation (Life Fellow)
  • International Academy of Trial Lawyers (Fellow and Board Member) - fellowship is limited by invitation only after a rigorous vetting process to the best 500 trial lawyers in the U.S. and in 30 foreign countries
  • Commonwealth of Massachusetts Board of Bar Overseers (member, Hearing Committee, 1992-1998)
  • Honorable Frank J. Murray Chapter of the American Inns of Court, Boston, Massachusetts (Executive Committee 1990 -1992)
  • International Society of Barristers (Fellow) - fellowship is limited to the top 500 trial lawyers in the U.S. and abroad 
  • International Association of Defense Counsel
  • The Supreme Court Historical Society
  • Suffolk University Law School (Adjunct Faculty, 1999-2003)
  • National Board of Trial Advocacy (Board of Directors, 1995 - 2000)
  • National Judicial College, Board of Visitors (Chair, 2005 - 2008)
  • National Judicial College (Board of Trustees)
  • American Law Institute
  • Member of the AAA National Roster of Neutrals
  • The London Court of International Arbitration (LCIA)
  • New England Baptist Hospital (Board of Visitors)

Additional Information

Mr. DeMarco has written and lectured on various topics of interest on trial practice. Articles he has authored include:
  • “Event Sponsorship Liability,” Federation of Insurance & Corporate Counsel Quarterly, Spring 1989
  • “Federal Preemption and State Failure to Warn Claims,” Federation of Insurance & Corporate Counsel Quarterly, Fall 1990
  • “The Admissibility at Trial of the Settlement of a Joint Tortfeasor,” Federation of Insurance & Corporate Counsel Quarterly, Spring 1991
  • “The Role of Defense Counsel in the Tripartite Relationship,” Federation of Insurance & Corporate Counsel Quarterly, Summer 1992
  • “The Collateral Effects of a Corporate Guilty Finding,” presented at the Defense Research Institute (DRI) Drug & Medical Device seminar in Toronto, Canada in 1994.
  • The Tripartite Relationship: A Guidebook for Defense Lawyers, 1995.
  • “The Role of the Company Witness,” 1999
  • “Representing a Client with Insurance” (Michael DeMarco and Thomas Lammert), Successful Partnering Between Inside and Outside Counsel (Vol. 2), published by the West Group, 2000-present