MMKO has a long and successful history of guiding our clients through the obstacles and responsibilities of administering an estate or trust. In 2008, John P. Mahon celebrates 60 years of service as a lawyer to his clients, handling numerous estates and trusts over those years. In addition, Richard T. Kerins served as the Nassau County Public Administrator and Deputy Public Administrator from 1987 to 2001, during which time he administered thousands of estates. During that same time, Lawrence Mahon and Kenneth P. Mahon served as counsel to the Public Administrator.
"Almost right is wrong!" is the motto greeting our clients in our lobby. It's a daily reminder of our commitment to provide exacting care and personal attention to our clients' needs. We provide help with estate administration, personal injury, employment and elder law, estate and trust litigation, estate planning, wills and trusts, wrongful death cases, business transactions, powers of attorneys, insurance trusts, family limited partnerships, asset protection trusts, dynasty trusts and more.
JOHN P. MAHON is the founder of Mahon, Mahon, Kerins & O’Brien, LLC and is now Of Counsel to the firm. On November 22, © 2020, Mr. Mahon celebrated 65 years admission to the New York State Bar.
Mr. Mahon attended St. Francis College until he entered Military Service in 1942. After his Honorable Discharge from the Army Air Corp/U.S. Air Force in 1945, Mr. Mahon attended St. John's University. In 1948, he obtained his J.D. from St. John's University School of Law where he was a member of the Law Review. He then obtained his LL.M in Labor Law and Aviation Law from New York University in 1952.
Mr. Mahon is a member of the American Bar Association, New York State Bar Association, Nassau County Bar Association and a Charter Member of the Catholic Lawyers Guild. He has been a frequent lecturer and active member of the Nassau County Bar Association, the New York State Bar Association, American Bar Association, Catholic Lawyers and many Elder Law Community Service Groups including: