Brendan D. O’Brien

Brendan D. O’Brien

Manchester NH

Brendan O’Brien concentrates his practice on commercial and insurance litigation.  He represents clients in premises liability, products liability, professional liability, insurance coverage, complex tort, employment, and general commercial disputes.  Brendan has tried cases throughout New Hampshire and has extensive experience in mediation, arbitration, and appellate practice.   Before joining our firm, Brendan worked at two national law firms, representing corporate clients in sophisticated litigation matters.  He also served as a law clerk to the Vermont Superior Court.

Admitted to Practice

  • Massachusetts
  • New York
  • New Hampshire
  • U.S. Court of Appeals First Circuit
  • U.S. Court of Appeals Second Circuit
  • U.S. District Court District of Massachusetts
  • U.S. District Court Eastern District of New York
  • U.S. District Court Southern District of New York
  • U.S. District Court District of New Hampshire

Professional Affiliations

  • American Bar Association
  • Massachusetts Bar Association
  • New Hampshire Bar Association
  • Manchester Bar Association
  • Defense Research Institute (DRI)


  • Boston College Law School, J.D., cum laude
  • Hamilton College, B.A., magna cum laude


  • Vermont Superior Court

Pro Bono & Volunteer Work

  • Working with the Innocence Project, Brendan has represented indigent individuals in post-conviction relief proceedings
  • Londonderry, New Hampshire Zoning Board of Adjustment