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John J. Fellin is a partner with the firm and concentrates in the areas of Matrimonial and Family Law. Mr. Fellin’s breadth and depth of experience in negotiating settlements, coupled with his trial skills, has yielded the highest level of advocacy on behalf of his clients.
Mr. Fellin has dedicated his legal career to helping clients navigate the difficult and often emotional issues and challenging family relationships that invariably arise in both the dissolution of a marriage and in other family-related legal proceedings. John is a highly skilled negotiator and experienced litigator who works closely with clients to identify their goals and develop strategies that effectively and efficiently meet their objectives.
Mr. Fellin strives to resolve issues in an effort to avoid costly, lengthy and emotionally-driven litigation. However, when settlement is not practical or possible, he will vigorously litigate the matter to obtain the best possible result for his client in the courtroom.
John’s range of representative clients includes high net worth individuals, public figures, entrepreneurs, corporate executives, professionals and business owners and their spouses. His experience and legal acumen are complemented by his fellow partners and associates who concentrate in federal and state court practice, civil and commercial litigation, transactional business matters, criminal defense and appellate advocacy, yielding a broader base of experience on which to draw in negotiating and litigating complex financial divorce matters.
As an active Touro law school alum and frequent lecturer before the Suffolk County Bar Association, John frequently guest lectures on family law matters at events attended by both law school students and seasoned practitioners alike.
Lauded by members of the judiciary and his peers in the legal community alike, Fellin is proud to have been rated “Superb” by , one of the leading attorney rating sites, to have been named a New York “Super Lawyers” “Rising Star” between 2017 and 2019, and named one of the American Society of Legal Advocates’ and National Advocates “Top 40 Under 40” matrimonial lawyers for five consecutive years.
In 2019, the Long Island Business News, the region's larget business community journal, awarded John as one of its "Leaders in Law."
John is a member of the New York State, Nassau County and Suffolk County Bar Associations. John is the incoming President of the Suffolk County Matrimonial Bar Association, is a member of the Suffolk County Bar Association Membership Committee, and was recently named to serve as a member of the Executive Board of the New York State Bar Association Family Law Section. He resides on Long Island with his Wife and children.
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$ 400-500 per hour
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Chat withState: New York
Acquired: 2010
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888 Veterans Memorial Highway, Suite 530, Hauppage, NY, 11788
320 Old Country Road, Suite 206, Garden City, NY, 11530
16 Client Reviews
Showing 1 - 4 of 4 reviews | Communication Style
Posted by anonymous | February 26, 2026 | Hired Attorney | Lawsuits & Disputes
If you want someone to communicate with you - go elsewhere
I tried to hold on to give John a good review, however I can't. Unfortunately, I had to threaten to find a new lawyer for him to take my calls. I got nothing but run around, no communication, and now I am left with him not returning phone calls or emails. What should have been settled and submitted l...
Posted by anonymous | May 02, 2025 | Hired Attorney | Child Custody
Does not care
Hired John on a referral. Explained my situation and he told me there was no way custody would change. After months of pushing my case off, he left his employer and went out on his own. Took yet another retainer, had one meeting and advised me to accept the offer, and that after the paperwork came ...
Posted by Keri | March 07, 2020 | Hired Attorney | Divorce & Separation
John goes above and BEYOND....
My divorce was supposed to be "simple" but became overly drawn out with many "snags" by my ex-husband. John went above and beyond in every circumstance and made the miserable task of a divorce gain clarity by explaining the process and provided rapid results both in and out of the court room. He filt...
Posted by Jessica | March 07, 2020 | Hired Attorney | Family
Highly recommended
I consulted with John on two separate occasions before hiring him for a family court case involving my young children. From the beginning, John was clear in the action he would take to help resolve my case. One case turned into two, and he worked with me to help keep the financial burden low. John ha...
"I fully endorse this lawyer. John is a colleague, and one of the most thorough and skilled attorneys that I have had the pleasure of working with. John is dedicated to the practice of Family and Matrimonial law, and has established an excellent reputation amongst the Matrimonial Bar of Suffolk County."
"John and I have had a number of cases together. He is extremely knowledgable and skilled. He is an absolute professional and a formidable opponent on trial. I highly recommend John."
"Mr. Fellin is an extremely competent and knowledgeable attorney. I have had the pleasure of working with him on several complicated matters. Mr. Fellin skillfully advocates for his clients in a manner that is both assertive and professional."
"John is a very competent lawyer with the "perfect combination." He aggressively advocates for his clients, employing superior litigation and negotiation skills as the situation demands, while simultaneously addressing colleagues and other professionals with courtesy."
"I recently had the pleasure to work with John on a very complex divorce matter. John is very knowledgeable on the law and a tenacious advocate for his clients. As a result of his diligence and professionalism, we were able to resolve a highly contentious matter to the satisfaction of both of our clients."
"John is a great attorney with a great respect for his clients. He is devoted to his clients and treats them honestly while giving them the best chance at success. He is diligent about providing the best representation possible for each client he has and is always conscientious about his research. John is an intelligent, hard-working, professional attorney."
"I have had the pleasure of knowing Mr. Fellin for over 10 years. His zealous, competence and compassion makes him not only an excellent advocate for his clients, but also a great attorney to have "on the other side.""
Divorce and separation lawyer
Divorce and separation lawyer
Divorce and separation lawyer
Divorce and separation lawyer
Divorce and separation lawyer
Divorce and separation lawyer
Criminal defense lawyer
Divorce and separation lawyer
Divorce and separation lawyer
2020
Super Lawyers - Rising Stars - Metro New York, Thomson Reuters
2020
10 Best, American Institute of Family Law Attorneys
2020
Top 40 Under 40, The National Advocates
2019
Super Lawyers - Rising Stars - Metro New York, Thomson Reuters
2019
Leadership in Law, Long Island Business News
2019
Top 40 Lawyers Under 40, American Society of Legal Advocates
2018
Super Lawyers - Rising Stars - Metro New York, Thomson Reuters
2017
Super Lawyers - Rising Stars - Metro New York, Thomson Reuters
2008
Award for Exceptional Contributions to Student Life, Touro Law Center
2007
CALI Award - Trial Practice, Touro Law Center
2007
CALI Award - Family Law, Touro Law Center
2007
Gabrielli Family Law Competition - Quarterfinalist, Albany Law School at Union College
2006
John Bainbridge Moot Court Competition - Semi Finalist, Touro Law Center
2019 - Present
Partner, Quatela Chimeri, PLLC
2010 - 2018
Partner, Winkler Kurtz, LLP
2008 - 2010
Executive Agency Counsel, New York City Business Integrity Commission
2020 - Present
New York State Bar Association - Family Law SectionExecutive Board Member
2017 - Present
Nassau County Matrimonial and Family Law CommitteeMember
2015 - Present
Suffolk County Bar AssociationCommittee on Member Benefits and Services
2015 - Present
Suffolk County Matrimonial Bar AssociationPresident-Elect
2006 - 2008
Touro Law Center Moot Court BoardAssociate Editor In Chief
2008
JD - Juris Doctor
2005
BA,
2001
High School Diploma
English
Spanish
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