Skip to main content

Professionals Professionals Section




Court Admissions


Awards & Recognition

Expand All >>
Biography Press Room

Jonathan A. Galler is a senior counsel in the Litigation Department. He concentrates his practice in the areas of probate and trust litigation, as well as commercial litigation, representing fiduciaries and beneficiaries in high stakes trust and estate disputes. Working closely with Proskauer's team of estate planning and administration lawyers, Jonathan litigates undue influence claims, will and trust contests, inheritance disputes, breach of fiduciary duty claims, trust construction and modification actions, and similar probate and trust matters through all phases of dispute resolution.

Jonathan has been appointed the Chair of the Florida Probate Rules Committee for the 2017-2018 year. This is the standing committee of the Florida Bar that writes and revises the statewide rules governing probate and guardianship. He also writes and speaks frequently on probate and trust litigation topics. He formerly co-authored a monthly column on the rules of civil procedure for the Palm Beach County Bar Bulletin and currently co-authors a quarterly column on Florida probate law for the New York State Bar Association Trusts and Estates Law Section Newsletter. He is also a member of the Executive Council of the Real Property, Probate and Trust Litigation Section of the Florida Bar, and he is formerly a vice chair of the Florida Probate Rules Committee and a liaison to the Florida Bar Rules of Judicial Administration Committee. 

In the area of commercial litigation, Jonathan has represented some of the world's largest companies in the financial, pharmaceutical and telecommunications industries in matters involving contract disputes, securities claims, antitrust law and white collar criminal investigations. He began his career in the firm’s New York office where he was an integral member of the team of Proskauer litigators that successfully represented Silverstein Properties in the insurance appraisal proceedings to determine the property and rental income losses sustained by the World Trade Center on 9/11.

While in law school, Jonathan served on the moot court board and taught legal writing and appellate advocacy to first and second year students. He also ran an annual program to raise money for a local legal aid organization and has continued his commitment to pro bono service, representing indigent clients primarily in the area of probate litigation. Following law school, Jonathan clerked for the Honorable Steven M. Gold in the Eastern District of New York.

Jonathan lives in Boynton Beach with his wife, who is also a lawyer, and their two sons.