brian j.s. cullen


Email: bcullen@cullencollimore.com

Tel: (603) 881-5500

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Villanova University School of Law, J.D.

Bates College, B.A.


Brian is a former prosecutor and Chief of the Narcotics Unit in the Suffolk County District Attorney’s Office in Boston. He is also an alumnus of what is now the largest law firm in the world.

At CullenCollimore, Brian regularly tries civil cases before juries in state and federal courts in New Hampshire and Massachusetts. His courtroom experience spans a range of issues from trade secret disputes and consumer protection act violations to multi-party civil rights actions and employment claims. He is also one of the most experienced trial attorneys in the area, having tried more than thirty civil jury trials in the past decade, including seven in federal court. Few contemporary civil litigators can claim a similar breadth of jury trial experience.

Brian’s trial successes include:

  • Defending a former shareholder and company president against trade secret and unfair competition claims brought by his former employer and business partners.

  • Defending police officers against claims of wrongful arrest, excessive force, and First Amendment violations.

  • Protecting good faith investors in one of New Hampshire’s largest Ponzi schemes from clawback efforts by state officials.

  • Defending multiple employers against claims of age, gender and disability discrimination before state and federal administrative bodies and courts.

Brian also regularly appears before appellate tribunals, including the New Hampshire Supreme Court, the Massachusetts Supreme Judicial Court, and the U.S. Court of Appeals for the First Circuit.

Brian received his bachelor of arts degree from Bates College and his juris doctorate, magna cum laude, from Villanova University School of Law.

Brian has a strong commitment to his community, having served as a director for the Nashua Soup Kitchen and Shelter for the past seven years. He is also an an avid skier, hiker, and runner. Brian has completed two marathons (Boston, Philadelphia), climbed all of New Hampshire’s 4,000-foot mountains and recently summited Bolivia’s Mount Illimani (21,122’).