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Sean Patrick Gaynor

Divorce and separation Attorney at Newark, NJ

5.0   7 reviews
  • State Years
    New York - NY 9 years
    New Jersey - NJ 9 years
  • Licensed for 9 years
    State NY
    Acquired 2015
    Currently Registered No misconduct found
  • Licensed for 9 years
    State NJ
    Acquired 2014
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Sean

Learn Sean’s areas of practice.

Sean devotes his practice to representing family law clients. He handles a wide variety of cases dealing with nearly every area of family law, including issues relating to custody and parenting time, alimony, child support, college contribution, removal/relocation, grandparents’ rights, emancipation, life insurance, and division of assets such as a business, real property, stock options, restricted stock units, retirement accounts and cryptocurrency.

Sean is an experienced litigator who gives each case particularized attention and detail. He approaches every case with a “two track” mentality—while Sean works to settle cases as early as possible, he also prepares for trial from day one in case a fair settlement does not come together. This strategy often allows him to stay one step ahead, leading to more favorable resolutions for his clients. Sean appears frequently in front of family part judges so that he can continue to hone his trial skills. This trial experience allows him to prepare his clients for the range of possible outcomes and provide them with an adequate cost-benefit analysis so they can make an informed decision to either move forward with trial or settle their case.

Sean places considerable effort into preparing witnesses (both clients and third parties) for the stresses and anxiety of testifying so that they can put forth their testimony in a manner that is comprehensive and understandable for the court. He firmly believes that ensuring witnesses are prepared for the rigor of a trial lead to better outcomes.

Additionally, Sean represents family law clients in criminal and municipal court matters when correlating charges stemming from alleged domestic violence or other issues arise.

Sean was previously an assistant prosecutor with the Morris County Prosecutor’s Office where he was assigned to the trial team. He regularly handled large caseloads quickly and efficiently, working on all aspects of criminal law, including charges related to possession and use of firearms, sexual assault, domestic violence, robbery, controlled dangerous substances, burglary, and more. Sean also handled multiple cases subject to New Jersey’s “bail reform” law, and has experience with both grand jury and jury trials. A staunch advocate for victim’s rights, Sean attended the prestigious Finding Words/Child First training, where he was trained on handling forensically sound interviews of children.

After graduating law school, Sean clerked for the Hon. Ann R. Bartlett in Warren County during Judge Bartlett’s tenure in the family division. During his clerkship, Sean was trained as a mediator and successfully mediated a number of family law cases to resolution.

Sean is admitted to practice in the State of New Jersey and the State of New York. He is a member of the New Jersey State Bar Association, Family Law Section and the Morris County Bar Association and serves as a volunteer attorney for the Battered Women’s Legal Advocacy Project.

Outside of his law career, Sean enjoys spending time with his family, especially during the summer when you can usually find him near the closest swimming pool with his two children.


Cohen Seglias Pallas Greenhall & Furman, PC
1085 Raymond Blvd
21st Floor
Newark, NJ, 07102
Cohen Seglias Pallas Greenhall & Furman, PC
16 South Street
Floor 2
Morristown, NJ, 07960
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5.0 / 5.0
  7 customer reviews
5 Star
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1 Star
Posted by anonymous | November 8, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Non payment of Alimony
Sean was great. Got the job done efficiently and effectively with little hassle. I would highly recommend him. He is knowledgeable in family law and has a great reputation in the industry.
Posted by anonymous | September 20, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Client centric result oriented lawyer
Sean is client centric and is driven to deliver the most equitable resolution protecting the client’s interests.
Posted by Marc | August 7, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Top Attorney
Sean Gaynor represented me for my divorce. He was straightforward and very professional. The adversarial attorney caused proceedings to drag out for well over a year, constantly attacking my character. Sean defended me while reassuring me her words meant nothing. Throughout several motions and legal maneuvers Sean was able to shut the the attorney and my now ex wife down. I could not be more happy with the results. Divorce is never a good thing but Sean was able to minimize the damage. I would highly recommend him to anyone in need. His experience and expertise is second to none. Thank you Sean!
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Posted by John G. | July 21, 2023
This review is from a person who hired this attorney.
| Hired Attorney
Relentless, Passionate, Efficient, and Analytical
Sean worked with me through a very unique and difficult, 26 month divorce that contained a criminal component. Every time a new obstacle presented itself, we collaborated to find new, uncharacteristic, or creative ways to productively move the divorce forward. He knows the law well and represented me with passion at every case management conference. His passion was backed by a strong foundational understanding of the law and the details of my case. His prosecutorial background also proved to be very advantageous because of my complicated case. These attributes are what help him to be so effective in front of judges and adversarial attorneys. Throughout this process, I truly felt like he cared about me on a human level, far beyond what I would expect from a lawyer / client relationship. His colleague, Carolyn Daly, also played a big part of helping bring my divorce across the finish line. We all consulted as needed, throughout the process, to ensure that every possible path forward was investigated and, if determined to be the best option, carried out. Sean is well equipped to handle not only the standard divorce proceeding, but also motion hearings and appeals. His is a wiz with numbers and helped me to better understand all financial aspects of a divorce proceeding. His style and delivery during case management conferences is assertive and effective because his arguments are based on a strong understanding of matrimonial law. My situation was a very unique and difficult one. The deck was stacked against me in many ways. Sean, with Carolyn's help, found a way to resolve the divorce in a way that was as fair as possible under the circumstances. If I had it to do this all over again (and God willing, I never will) Sean is the person I would choose to represent me. If you are reading this and don't consider consulting with him, you will wind up leaving something on the table during your divorce. Thanks Sean, for everything that you and Carolyn did for me. There will always be a place in my heart for you both.
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Posted by Felix | October 22, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Great Family Lawyer
Sean understood my case, laid out a plan and communicated with me through the whole process. Would use him again if needed and recommended him to anyone I can.
Posted by anonymous | September 14, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Great Divorce Attorney who "gets it" and is able to handle high conflict cases
Sean is an excellent divorce attorney, one of those who "get it" when it comes to handling high conflict cases. He is very bright, well organized and diligent, with high attention to details and focus on the end goal. His prior experience as a prosecutor helped us to make good use of extensive evidence and to disprove multiple false allegations raised by the opposing party. On top of it he was always respectful, supportive and friendly. My divorce should have been simple: short marriage, no kids, hardly any assets, however it lasted for 2 years because I was divorcing a famous anarchist known from his fake profile on fb as "Donatello Tomasso": a self-proclaimed social media "celebrity" and author of hateful racial and political fake news, who wanted drama instead of resolution. He was obsessed with destroying me - just to show his world how it is done. At first I was represented for 6 months by another attorney, but he was not able to handle the pace and failed to protect me from harassment. What a huge difference when I retained Sean Gaynor!!! Sean was fast and efficient, strongly focused on eliminating the noise and determining the facts. Even during the pandemic, when everything froze, he still managed to keep things moving forward. Because of his strong logic and no-nonsense approach I got finally divorced and regained my freedom. If you are divorcing a reasonable partner who is willing to settle, then go for it, because it will cost you much less than the NJ Family Court system and legal fees. However if you are targeted by a high-conflict individual who has no will to end "the game", then Sean Gaynor is your hope. I was lucky to have Sean and his amazing paralegal Donna on my side. I can't thank them enough for saving me.
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Posted by anonymous | February 27, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Highly Recommend!
Sean Gaynor is an excellent attorney who delivered everything he said he would. I had a fairly complicated divorce which became more complicated due to some unfair treatment by Probate. Sean uncomplicated my case, appeased Probate and allowed me to move forward unimpeded. He is very bright and diligent. This is an attorney who gets things done!
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  • Hourly Rates $ 325-385 per hour
Payment methods
Cash, Check, Credit Card


AVVO RATING 7.6 (Very Good)

Work Experience

  • Associate
  • Cohen Seglias Pallas Greenhall & Furman, PC
  • 2023 - Present
  • Associate
  • Daly & Associates, LLC
  • 2019 - 2023
  • Assistant Prosecutor
  • Morris County Prosecutor's Office
  • 2015 - 2019


  • Catholic University of America, Columbus School of Law
  • JD - Juris Doctor
  • 2014
  • Catholic University of America
  • BA - Bachelor of Arts
  • 2011


  • New Jersey Bar Association
  • 2019 - Present
  • Battered Women's Legal Advocacy Project
  • Volunteer Attorney
  • 2019 - Present
  • Morris County Bar Association
  • 2015 - Present

Languages Spoken

  • English

Honors and Awards

  • Rising Star
  • SuperLawyers
  • 2022
  • Best Lawyers for Family
  • New Jersey Family Magazine
  • 2021

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Newark Divorce and separation Lawyer Sean Patrick Gaynor
Sean Patrick Gaynor
Divorce and separation Attorney
Newark, NJ
Licensed for 9 years