Brian J. Sullivan

  • Suffolk University Law School, summa cum laude
  • Northeastern University, summa cum laude
  • Massachusetts
  • Boston Bar Association
  • American Bar Association
  • U.S. District Court, Massachusetts




  Download Print BrochurevCardEmailPrint BioBrian J. Sullivan

Brian J. Sullivan concentrates his practice on white collar criminal defense and complex civil litigation.  He has successfully represented clients before state and federal courts and administrative agencies, and in domestic arbitrations. Brian has worked with clients in a variety of industries, including energy, health care and life sciences, technology start-ups,and financial services.

Brian began his career as an associate with a large Boston law firm.  Brian's experience there included representing corporate and individual clients in both criminal and civil matters.  Some of Brian's experience includes:

  • Represented energy company against environmental claims in multi-district litigation, including conducting expert depositions, arguing discovery motions, and drafting appeal briefs.
  • Successfully defended technology start-up in preliminary injunction filed by public broadcast companies for alleged copyright infringement arising from innovative, disruptive technology.
  • Counseled financial clients in multiple, overlapping nationwide class actions, including drafting successful appellate briefs before First Circuit, successful motions to dismiss in multiple jurisdictions, and oppositions to class certification motions.
  • Investigated corporate compliance issues for close corporation.
  • Advised medical software company in breach of contract matter. 
  • Defended individual clients in federal criminal matters, state criminal matters, and administrative hearings including Anti-Kickback Statute claims in federal criminal prosecution. 

In 2009-2010, Brian worked with the Children's Law Center of Massachusetts.  While there, he contributed to appellate briefs submitted to the Massachusetts Appeals Court and Supreme Judicial Court on behalf of juvenilesrelating to constitutional issues including rights of juveniles to have interpreters for legal guardians and retroactive application of sexual offender registry requirements to juvenile offenses. 

From 2013-2014, Brian served as a Special Assistant District Attorney for the Middlesex District Attorney's Office.  He prosecuted 17 jury trials including felony drug cases and financial fraud cases.

Brian graduated summa cum laude from Suffolk University Law School in 2009. While in law school, Brian was the Chief Comments Editor for the Transnational Law Review, represented Juveniles as part of the Suffolk University Law School Juvenile Defender's Clinic, and also interned with the Suffolk County District Attorney's Office Special Prosecutions Unit. Brian is a 2006 graduate of Northeastern University, summa cum laude


Libby Hoopes
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