Peter A. Kuperstein is a partner in the Family Law practice group at Prince Lobel. He has been practicing exclusively in all aspects of family law matters for over 25 years.  Peter’s experience in family law matters includes issues ranging from uncontested actions to highly contested cases involving complex financial issues, business valuations, custody disputes and appeals, as well as prenuptial agreements, paternity actions, modifications, and contempt actions.  Peter is the partner in charge of the firm’s Andover Family Law Conference Center.  

Peter has extensive appellate experience and has authored over 35 appellate briefs, as well as a writ of certiorari to the Supreme Court of the United States, on a wide range of family law issues.  He has been involved in several leading family law cases on such issues as alimony, child support, property division, custody, parent coordinators, jurisdiction, and prenuptial agreements.

Peter was named a U.S. News and World Report “Best Lawyer in America” in Family Law, Family Law Mediation and Appellate Practice since 2021, and consistently recognized as a “Massachusetts Super Lawyer” in the field of family law in Boston Magazine. Peter is a trained mediator and frequently is appointed by the Courts as a conciliator.  He has also served as a Guardian ad Litem and appointed under the Attorney Representing Children Program (ARC) in the Probate and Family Court.


  • Suffolk University Law School, J.D., cum laude, 1997
  • Syracuse University, B.S., 1992

Bar Admissions

  • Massachusetts
  • Essex Bar Association

Memberships & Affiliations

  • Boston Bar Association