Attorney Profile

Glenn S. Koopersmith

glennkoopersmith.2.jpgGarden City, New York

Phone: (516) 873-1000
Fax: (516) 307-1610
Email: Contact me

Mr. Koopersmith is a graduate of the University of Pennsylvania and obtained his Juris Doctor degree from the Washington College of Law of the American University in 1978. He was admitted to practice law in the State of New York in the Second Judicial Department in 1982.

In 1982, Mr. Koopersmith became employed as a legal assistant at the Appellate Division, Second Department. Approximately two years thereafter, he became employed by the law firm of Koopersmith, Feigenbaum & Potruch, Esqs, practicing primarily in the fields of matrimonial law and matrimonial appellate litigation. Thereafter, between 1986 and 1993, he was a member of the law firm of Di Mascio, Meisner & Koopersmith, Esqs. Since June, 1997, he has been a sole practitioner focusing on matrimonial appellate litigation and matrimonial law.

Mr. Koopersmith is a fellow of the American Academy of Matrimonial Lawyers. He is a founding Barrister in the New York Family Law Inns of Court. He has lectured in the field of matrimonial law to the Judiciary at the New York State Judicial Institute and at the Nassau County Matrimonial Judges Seminar and to various professional and non-professional groups as well, including the New York State Bar Association, Nassau County Bar Association and its Family Law Committee, the Nassau Academy of Law and the Hofstra University School of Law CLE division, Hofstra University School of Law Career Symposium and the Nassau County Bar Association High School Career Development Seminar.

Published Works

Mr. Koopersmith has also authored numerous articles pertaining to matrimonial law and appellate practice. He is the author of several articles which have appeared in the Outside Counsel column of the New York Law Journal including the following: Prenuptials and Early Postnuptials: Let’s Call the Whole Thing Off, which appeared on April 16, 2013; Appeals of TROs And Orders Issued Sua Sponte Orders which appeared on October 4, 2010; Discord Over Non-compliant Child Support Orders, which appeared on August 5, 2010; Spousal Credit for Voluntary Support in Pending Divorce?, which appeared on March 12, 2007; Homemaker’s Services Devalued in Equitable Distribution, which appeared on May 24, 2005; and The Application of Holterman to the Child Support Standards Act, which appeared on September 23, 2004. He is also the author of the following articles which have appeared in the Family Law Review: The First Department Decision in Anonymous v. Anonymous – A Further Erosion of the Prenuptial Counsel Fee Waiver?, which appeared in the Spring, 2015 edition, Volume 47 No. 1; Marital Agreements After Petrakis and Petracca, which appeared in the Fall, 2014 edition, Volume 46, No. 3; The Implications of Mesholam v. Mesholam, which appeared in the Fall, 2008 edition, Volume 40, No. 3. He is the Revision Editor of Chapter 17 of the treatise New York Appellate Practice, entitled Special Considerations in Matrimonial Appeals.

Bar Admissions

New York, 1981


Washington College of Law, American University
Juris Doctor, 1981

University of Pennsylvania
Bachelor of Arts, 1978

Classes/Seminars Taught

Mr. Koopersmith has lectured on matrimonial law to the following groups:

  • New York State Judicial Institute
  • Nassau County Matrimonial Judges Seminar
  • New York State Bar Association
  • Nassau County Bar Association
  • Suffolk County Matrimonial Committee
  • Westchester County Matrimonial Committee
  • Queens County Bar Association
  • Nassau County Bar Association, Family Law Committee
  • Nassau Academy of Law
  • Hofstra University School of Law CLE division

Professional Associations and Memberships

American Academy of Matrimonial Lawyers

New York Family Law Inns of Court
Founding Barrister

Past Employment

  • Law Assistant, Appellate Division, Second Department
  • Koopersmith, Feigenbaum & Potruch, Esqs.
  • Di Mascio, Meisner & Koopersmith, Esqs.