Jack graduated from Boston College Law School with a Juris Doctor degree and ranked in the top 10% of his class. He is admitted to practice in all state Courts of the Commonwealth of Massachusetts, The United States District Court for the District of Massachusetts, and The United States Court of Appeals for the First Circuit. He has also been admitted to practice in the courts of several other states on a case by case basis.


American Association For Justice, Massachusetts Bar Association, Massachusetts Academy of Trial Attorneys.


  • The Order of the Coif (national legal honor society)
  • Bar Register of Preeminent Lawyers
  • Rated “AV” (the highest available rating) by Martindale- Hubbell Law Directory
  • Guest Lecturer, Boston College Law School
  • Boston’s Top Rated Lawyers (Boston Globe)


Jack and his father, legendary trial lawyer John F. Finnerty, founded their original Boston law firm, Finnerty & Finnerty, in 1971. His father was portrayed in the book and movie, “The Verdict”, starring Paul Newman and James Mason, with the plot involving one of the firm’s cases. After his father’s death in 1994, Jack became Senior Partner in Finnerty & Finnerty, and in 2006 he founded a new smaller firm, Finnerty Law Offices, located in Boston and Cape Cod.

The firm is listed in Martindale-Hubbell’s Bar Register of Preeminent Attorneys as a specialty litigation firm for both individuals and major corporations. Jack has dedicated his practice to aggressively litigating a broad spectrum of cases throughout Massachusetts and several other states and has achieved an enviable record of success in court.

The firm strives to provide exceptional legal services in the following areas:

  • Serious Personal Injury and Wrongful Death Cases
  • Products Liability Litigation
  • Defective Hip & Knee Implants
  • Defective Medical Devices (Infusion Pumps, Essure, Hernia Mesh, IVC Filters, Transvaginal Mesh, Allergan Breast Implants)
  • Johnson & Johnson Talcum Powder Litigation
  • Defective Drugs/Medications 
  • Automobile Accidents
  • Boating Accidents
  • Medical Malpractice
  • Dental Malpractice
  • Pharmacy Malpractice
  • Employment Litigation
  • Sports Helmets Injuries
  • Premises Liability/Slip & Fall
  • Construction Accidents
  • Scaffolding Collapses
  • Explosion Injuries
  • Environmental Liability/Oil Spills
  • Liquor Liability
  • Corporate Litigation
  • Subrogation
  • Insurance Litigation
  • Fire/Burn Injuries
  • Roundup Litigation

The following characteristics distinguish Finnerty Law Offices:

  • An impeccable record of success and client satisfaction
  • The time and resources necessary to ensure that the maximum results will be achieved
  • Personalized services of the highest quality


Jack has received the highest ratings possible in Legal Ability and Professional Ethics from Martindale – Hubbell Law Directory based upon recommendations obtained from judges and other attorneys. He closely monitors each case that the firm accepts. Plaintiffs’ cases are accepted on a contingent fee basis under which the client pays no fee unless there is a financial recovery in his case. The goal of the firm in plaintiffs’ cases is to resolve them by settlement or trial after aggressively pursuing them through the discovery stage. Jack’s reputation often leads to the favorable settlement of cases that would otherwise have to be tried. His opponents are aware that he has a stable of highly qualified expert witnesses in all fields of medicine, dentistry, engineering, manufacturing, and economics available to consult with him and testify in court.

Material presented on the Finnerty Law Offices website is intended for information purposes only.
It is not intended as professional advice and should not be construed as such.