John R. Heisner

John HeisnerJohn R. Heisner


With extensive experience in all phases of complex litigation relating to business, trusts and estates, government regulations, real estate and intellectual property, John represents a broad spectrum of clients in a variety of matters, including military defense contractors, individuals and businesses who own intellectual property, individuals with complex real estate litigation issues and parties engaged in estate planning and estate litigation for profit and non-profit corporations. His litigation expertise includes copyright infringement, trade secret misappropriation, unfair trade practices, commercial real estate transactions, fraud, business compliance, physician discipline and securities.  He has conducted more than 100 jury trials, first as a government prosecutor and then as a private practitioner.

John is active in the legal community, and involved in a variety of community initiatives.  In addition to serving as an adjunct professor at the University of San Diego School of Law, John works with the San Diego Unified School District’s “Raising a Reader” program and is a Trustee of both the California Scottish Rite Foundation and California Masonic Foundation where he serves to provide educational scholarships to public schools, high school students, and college students. He serves the international community of philanthropists as a diplomat and mediator.

Additionally, he is a member of the American Bar Association’s Litigation section and has served on various criminal justice planning committees, state and local election law commissions and homeowner association boards of directors. He is a member of the Board of Directors for the St. Jude Hospital Foundation, San Diego Chapter and the Advisory Board for both the military defense industry and the residential housing industry.

John has an AV® Preeminent™ Peer Review Rating by Martindale-Hubbell, and has also served as a Judge Pro Tem in the California Superior Courts. San Diego Magazine named John a Top Lawyer of 2015 in the category of white collar crime, and he was selected as one of the 20 Men Who Impact San Diego of 2015 by SD Metro Magazine. Most recently, John was named a 2017 Super Lawyer in the area of business litigation and was recognized by San Diego Business Journal as “Best of the Bar” of 2016.