Mark Lavoie

Mark G. Lavoie


Attorney Profile

Mark Lavoie represents businesses and individuals involved in complex, high exposure disputes, including malpractice and other health care litigation, commercial disputes, employment claims, product liability lawsuits, and the full range of professional negligence cases. He also represents health care institutions, physicians, dentists, engineers, lawyers and other professional service providers in administrative and regulatory licensure and credentialing controversies.

What motivates Mark in his representation of clients is the challenge of mastering extremely technical information and advocating for his clients in negotiations, administrative hearings, and in trials in state and federal courtrooms. He is admitted to practice before the First Circuit Court of Appeals and the United States Supreme Court, as well as in state and federal courts in Maine and New Hampshire.

Mark was selected to serve as Law Clerk for Maine’s distinguished Superior and Supreme Court Justice Harry Glassman following graduation from the University of Maine School of Law in 1978, where he was a member of the law review, a legal writing instructor and recipient of the faculty’s annual award to the student who has made the most significant contribution to the school. He subsequently joined Norman Hanson & DeTroy in 1979 where he continues to provide advice and representation in civil case trials before judge and jury– with the same dedication, devotion and energy he first brought to the practice of law.  Mark has been involved as primary counsel for his client in over 300 jury trials and hundreds more administrative hearings.

Committed to continuing education and to improving his skills as an advocate, Mark is a past president of the Maine State Bar Association, and has held officers’ and committee positions in a wide variety of professional associations. He has lectured extensively on trial topics and has taught lawyers how to negotiate and try cases in many venues, including the Maine College of Trial Advocacy and University of Maine School of Law. Mark holds an Honorary Membership in the Canadian Bar Association, and he is a Diplomate of the American College of Trial Lawyers, which he also served as State Chair for three years. He has been rated in the highest tier of professional achievement in the leading bar directories, including Chambers (sole “band 1” trial lawyer in medical malpractice), Benchmark Litigation, Martindale-Hubbell and Best Lawyers in America, which named him the best personal injury lawyer in his community in 2011 and the best malpractice defense lawyer in 2012 and 2014.  Mark also has been designated one of the top 100 trial lawyers in New England in the Super Lawyers Directory beginning in 2017.



Admitted to Practice

  • State of Maine
  • State of New Hampshire
  • U.S. District Court, District of Maine and New Hampshire
  • U.S. Court of Appeals, First Circuit
  • U.S. Supreme Court

Member, Past and Present

  • Maine State Bar Association, President
  • Cumberland County Bar Association, Member
  • Canadian Bar Association, Honorary Member
  • Defense Research Institute, State Chair
  • Federation of Insurance and Corporate Counsel, State Chair
  • American College of Trial Lawyers, Diplomate and State Chair
  • Maine Trial Lawyers Association, Board of Governors
  • Northern New England Defense Counsel Association, President
  • Maine Bar Foundation, Fellow
  • Maine’s Justice Action Group, Member
  • Maine Judicial Performance Council, Member
  • Maine Civil Rules Committee, Member
  • Gignoux Inns of Court, Member

Selected Reported Cases

  • Mitchell v. Kieliszek, 2006 ME 70, 900 A.2d 719.
  • Hawks v. Commercial Union Ins. Co., 2001 ME 8, 764 A.2d 258.
  • Millet v. Atlantic Richfield Co., 2000 ME 178, 760 A.2d 250.
  • Acadia Ins. Co. v. Buck Construction Co., 2000 ME 154, 756 A.2d 515.
  • Hamilton v. Greenleaf, 677 A.2d 525 (Me. 1996).

Awards, Merits & Honors

  • Featured as a Litigation Star in Benchmark Litigation from 2013 to present
  • Noted as “Lawyer of the Year” by Best Lawyers for 2014 in Medical Malpractice – Defendants
  • Identified among the New England Super Lawyers (2007 – 2023)
  • Specially mentioned as a “Key Individual” by Chambers & Partners for 2013
  • Chambers & Partners Ranked Lawyer Distinction Medical Malpractice & Insurance Defense 2023
  • Recognized in New England Super Lawyers as Top 5 2023 Maine Super Lawyers
  • Recognized by Best Lawyers of America – Medical Malpractice Law and Personal Injury Litigation – Defendants (2010-2024)
  • Best Lawyers “Lawyer of the Year” – Medical Malpractice Law (Defendants) 2024
  • Benchmark Litigation 2024 Local Litigation Star