Commitment to Our Clients

We do everything possible to make our clients feel reassured that we are there for them. For many people, taking on litigation can be quite intimidating. That's why Francis E. O'Brien dedicated his practice to helping people face the courtroom with dignity and confidence, more than 30 years ago. Today, Daniel O'Brien and Stephen O'Brien are continuing their father's practice; walking people through the judicial system with care, just like their dad. You can count on the law offices of O'Brien and O'Brien to walk you through the system as well.

We consistently keep our clients informed and updated, and we spend a lot of time learning about them, their goals and their needs. It’s a one-on-one, personal approach that isn’t typical of many client-attorney relationships. We do not believe there should be a boilerplate process to working with our clients and solving their legal issues.
The law office of O'Brien and O'Brien are dedicated to going the extra mile for all clients. This is a personal Law firm, where the same attorney will be at your side thorough your entire court proceeding. That means you won't be "shuffled" around to other attorneys during your case, but rather, enjoy the confidence of a single attorney from start to finish.
O'Brien and O'Brien is a diverse law firm, concentrating in five areas of proactive: Criminal Law, Personal Injury, Real Estate, Estates and Bankruptcy. The attorney's at O'Brien and O'Brien know their way around a courthouse, and are dedicated to standing with their clients from the start of litigation to the finish.
For more than 30 years, the attorneys at O'Brien and O'Brien have been serving the people of Suffolk County, offering knowledge and experience to the support of thousands of cases. We appreciate your interest in O'Brien and O'Brien.

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Commitment to Our Community

We believe that as lawyers we have a responsibility to serve not only our clients, but the community in which we work and live. O’Brien & O’Brien prides itself in being involved in the community—not just the bar associations, but community charities, organizations and events. O’Brien & O’Brien has consistently devoted support to the community throughout its history.

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Our History

Francis E. O'Brien dedicated his practice to helping people face the courtroom with dignity and confidence, more than 30 years ago.  Today, Daniel O'Brien and Stephen O'Brien are continuing their father's practice; walking people through the judicial system with care, just like their dad.  You can count on the law offices of O'Brien and O'Brien to walk you through the system as well.

For more than 30 years, the attorneys at O'Brien and O'Brien have been serving the people of Suffolk County, offering knowledge and experience to the support of thousands of cases. We appreciate your interest in O'Brien and O'Brien.


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Daniel P. O'Brien

Daniel P. O'Brien practice includes a broad range of expertise in litigation matters.  He has successfully represented numerous clients in criminal, traffic and family court matters.  Additionally,  Daniel P. O'Brien has extensive experience in Real Estate, Landlord / Tenant, Matrimonial, Corporate and Estate Litigation.   Daniel P. O'Brien has litigated cases in the boroughs of the City of New YorkNassau,Suffolk and in the Eastern and Southern Districts of the United States District Court.

Daniel P. O'Brien is a member of the New York State Bar Association, Suffolk County Bar Association and the Suffolk County Criminal Bar Association.  

Daniel P. O'Brien is admitted to practice in the State of New York, the Commonwealth of Massachusetts and the United States Federal Courts, Eastern and Southern Districts of New York.


Photo Credit: Mitya Ku

Stephen L. O'Brien

Stephen L. O'Brien became a partner in the firm in the fall of 1999.  Since that time he has successfully represented numerous clients in CriminalPersonal Injury and Estate matters.  Stephen L. O'Brien has litigated cases in the City of New YorkNassauSuffolk and in the Eastern and Southern Districts of the United States District Courts.  He has successfully argued cases in all New York state courts includingthe Appellate Division and the Court of Appeals.

Prior to joining the firm, Stephen L. O'Brien gained substantial trial experience by serving as an Assistant District Attorney in the Suffolk County District Attorney's office. He served as the Deputy Bureau Chief of the Major Crimes Bureau, White Collar Bureau and the District Court Bureau during his career wit the District Attorney's office.

Mr. Stephen L. O'Brien is a member of Association of Trial Lawyers of America and the Suffolk County Bar Association, for whom he has lectured several times. Stephen L. O'Brien is admitted to practice in the State of New York and Connecticut as well as the Eastern and Southern Districts of the United States Federal Court.