Jay Frederic Theise

Jay Frederic Theise is an Aquinnah attorney practicing through Theise Law, serving clients from offices on Martha’s Vineyard and in Lexington. His general practice serves individuals, entrepreneurs, business entities, and families. His work includes business transactions and disputes, general litigation, estate and trust controversies, real estate development issues, personal injury-related planning, and alternative dispute resolution through mediation and arbitration. He has practiced since his Massachusetts admission in 1970.

Jay earned a J.D. from the University of Maine School of Law and a B.S. from Boston University. He was admitted to the Massachusetts bar and federal courts in 1970. His long practice has included court litigation, administrative matters, business counseling, and work extending across the United States and, with foreign counsel, into matters involving Canada, Europe, Israel, and Caribbean jurisdictions.

Jay handles business disputes involving contracts, ownership rights, closely held companies, commercial banking, secured transactions, workouts, wage and hour claims, and business torts. His work extends to estate and trust contests, including beneficiary disputes and claims involving fiduciaries. His alternative dispute resolution practice includes mediation, arbitration, organizational conflict assessment, and ombudsman services. He has litigated numerous matters before judges and juries during his career.

Jay Frederic Theise continues to practice from an Aquinnah office on Martha’s Vineyard and a suburban Boston office in Lexington. His work includes extensive litigation, business controversies, estate and trust disputes, real estate development issues, and alternative dispute resolution. He combines courtroom experience with negotiation and mediation services for clients facing complex commercial, estate, and organizational conflicts.

Law Office Affiliations

• Attorney, Jay Frederic Theise Law Associates LLC
• Member, Massachusetts Bar Association

Licensed State

• Massachusetts

Awards & Badges