John O. Mirick

John's practice concentrates on complex business litigation. He regularly appears in state and federal courts for U.S. and foreign clients on matters involving stock ownership and corporate control, corporate acquisition litigation, breach-of-contract cases and patent litigation.

John was included in the 2024 edition of The Best Lawyers in America® for Commercial Litigation.  He has been recognized by The Best Lawyers in America® since 1994.  In 2009-2010 and 2014, John was named one of the "Top 100 Massachusetts Super Lawyers" by Boston magazine and Law & Politics. He has been named one of Massachusetts "Super Lawyers" every year since 2004 and was also named one of New England's "Super Lawyers" in 2007 and 2008. John was selected by his peers for inclusion in The Best Lawyers in America© 2022 in the field of Commercial Litigation. First listed in 1993. He lectures regularly on business litigation topics for Massachusetts Continuing Legal Education, Inc. John has received an AV® Preeminent Peer Review Rating by Martindale-Hubbell, the highest rating available for legal ability and professional ethics.

Bar & Court Admissions

  • Massachusetts
  • U.S. District Court for Massachusetts
  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Supreme Court
  • U.S. Court of Appeals for the Federal Circuit
  • Harvard Law School JD, cum laude (1972)
  • England Fulbright Scholar (1968-1969)
  • Amherst College BA, magna cum laude (1968)
  • University College, University of London MA (1969)


  • Massachusetts Superior Court Civil Practice Jury Instructions (MCLE 1998)(co-editor)
  • "Discovery and Trial Preparation," in Chapter 93A Rights and Remedies (MCLE 2002)
  • "Selecting and Retaining Experts," in Massachusetts Expert Witnesses (MCLE 2002)
  • “Drafting Simple Wills and Trust Clauses,” Massachusetts Basic Practice Manual (MCLE, 2008 to present)(co-author)
  • "Litigation," in Due Diligence in Massachusetts (MCLE 2000)
  • "Jury Issues," in Massachusetts Superior Court Civil Practice Manual (1997)

Professional / Community Affiliations

  • Massachusetts Judicial Nominating Commission, former member
  • Massachusetts Board of Bar Overseers, former chair
  • American Bar Association
  • Federal Bar Association
  • Massachusetts Bar Association
  • Worcester County Bar Association