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Jonathan A. Karon

Of Counsel
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Phone: (617) 720-8447

KJC Law Firm, LLC
10 Tremont St 5th Floor
Boston, Massachusetts 02108

Jonathan A. Karon is Of Counsel with the KJC Law Firm LLC. Jon's practice primarily consists of plaintiff's personal injury cases and general civil litigation. His active trial practice includes traumatic brain injuries, amusement ride accidents, product liability, and other serious personal injury cases as well as general civil litigation. Renowned as one of the state's best trial lawyers, Jon's noteworthy cases include successfully representing a young girl who suffered a tragic head injury due to a defective motor cover on an amusement ride; a young boy who survived a traumatic brain injury but lost all his social skills; a young woman who broke her neck as the result of a defective go kart seat belt; and the surviving family of a wife/mother who lost her life due to an unreasonably dangerous aftermarket snowmobile part.

Jon's accomplishments outside of the courtroom further emphasize his distinguished reputation. For over ten years, he has earned a spot on the lists of Massachusetts Super Lawyers® published in Boston Magazine. He currently has the highest professional rating on Avvo - an online directory of lawyers - of Superb. He is a former President of the Massachusetts Academy of Trial Attorneys (MATA) and current Editor-in-Chief of the MATA Journal. For six consecutive years, Jon received the President's Award from the Massachusetts Academy of Trial Attorneys for his extraordinary commitment and dedication to the organization. He has been an invited speaker at legal education programs conducted by the Massachusetts Bar Association, American Association for Justice, Massachusetts Academy of Trial Attorneys, and the Ohio Association for Justice. He has been quoted on legal issues in the New York Times, the Boston Globe, and the Massachusetts Lawyers Weekly.

Jon studied at the University of Michigan for his undergraduate degree… Go Blue! Jon is a 1986 cum laude graduate of the Boston University School of Law. During law school, he excelled and earned many prestigious honors such as the American Jurisprudence Award for excellence in Constitutional Law studies and being named a G. Joseph Tauro Scholar, a Paul J. Liacos Scholar, and an Edward F. Hennessey Scholar.

Message from Jon "I'll put in the necessary time and effort and advise you whether you are likely to get more by trying or settling your case. The decision will be yours… I can promise that you will receive personal attention, have your calls returned promptly, and your case will be handled in a manner that maximizes your chances of a meaningful recovery."


J.D., Boston University School of Law, 1986

cum laude


  • G. Joseph Tauro Scholar (top 25% of first year section)
  • Paul J. Liacos Scholar (top 25% of second year class)
  • Edward F. Hennessey Scholar (top 25% of third year class)
  • American Jurisprudence (book) Award for highest grade in Constitutional Law Class

Bachelor in General Studies, University of Michigan, 1982

Jurisdictions Admitted to Practice Supreme Judicial Court, Massachusetts, 1987
United States District Court, Massachusetts, 1987
United States Court of Appeals for the First Circuit, 1991
State Bar of Michigan, 1986
United States District Court, Eastern District of Michigan, 1986
Legal Experience
  • Karon Law, LLC, Boston, MA. September 2016 – May 2020.
  • Sole practitioner with an active trial practice representing plaintiffs in serious personal injury cases, including traumatic brain injuries, amusement ride accidents, products liability and both sides in general civil litigation.

  • Karon & Dalimonte, LLP, Boston, MA. May 1992 - August 2016.
  • Partner primarily practicing personal injury law, including products liability, traumatic brain injury, amusement ride and medical malpractice cases as well as general civil litigation and criminal defense. Lead trial counsel for civil and criminal jury trials, negotiated significant settlements, briefed and argued appeals, argued motions, and took and defended numerous lay and expert depositions.

  • Tucker, Biegel & Speziali/Roberts, Carroll Feldstein & Tucker, Boston, MA. April 1989- April 1992.
  • Associate with personal injury defense firm. Had both regional oversight and local counsel responsibilities for a major defendant in asbestos personal injury actions. Supervised local counsel in the New England and New York region, prepared litigation budgets and negotiated multi-party settlements. Second chaired jury trials in State and Federal Court and briefed and argued appeals before the U.S. Courts of Appeal for both the First and Second Circuits.

  • Sugarman and Sugarman, P.C., Boston, MA. December 1986 - November 1988.
  • Associate with plaintiff’s personal injury firm. Took and defended depositions, argued motions, drafted pleadings and second chaired jury trials. Kitch, Saurbier, Drutchas, Wagner & Kenney, P.C., Detroit, MI August - December 1986 Associate with medical malpractice defense firm. Drafted pleadings and discovery.

Client Reviews
We wanted to thank you again so much for all you did for us and your support throughout this ordeal. You did a great job for us and we truly appreciate it. We wish you well always. Dot and Alex
We are extremely happy that we chose Kathy Jo Cook as our attorney. She brings experience, knowledge and compassion into the complicated legal process. Day or night, Attorney Cook always had time to talk to us and answer any questions we had throughout. We highly recommend her. Christopher & Mary Casella
KJC Law firm handled my case and I was very pleased with the results. The Team there always returned my calls or emails quickly. They are very direct and upfront on how they feel the case will go and the best ways of handling it. I would definitely call them again should I need their assistance and will recommend them to others highly. J G.
Law firm represented myself and another individual in a work related age discrimination case and was successful in obtaining a settlement in our favor. Couldn't be happier with the results and the representation. Mike K.
I have worked with Kathy Jo Cook for over a decade. She has represented me in both personal and professional matters and has given 150% every time. Kathy Jo is hardworking and always has my best interests in mind. She is professional and reliable and has been accessible as needed, even after business hours. Kathy has expertise in many areas of law and is incredibly fair and ethical in her client work. We secured favorable outcomes every time that have enabled me to enjoy more happiness, health and success in my life. Mindy