Sebastian M. van Roundsburg


  • Office Contact Info
  • Biography

    Sebastian M. van Roundsburg is an Associate in the San Diego office of GRSM and is a member of the Commercial Litigation practice group.

    Sebastian has extensive experience in complex state and federal court cases involving trademark infringement, breach of contract, privacy and data protection, false advertising, unfair competition, shareholder rights, defamation, and other business disputes. He has experience in all stages of litigation from responding to pleadings and conducting discovery to dispositive motions and trial.

    Prior to joining GRSM, he practiced as an attorney in the UK, including at a Chambers 500 law firm, with a focus on commercial and civil litigation.


    • California
    • England & Wales
    • U.S. District Court, Northern District of California
    • U.S. District Court, Eastern District of California
    • U.S. District Court, Southern District of California


    • Louis M. Welsh Inn of Court
    • San Diego County Bar Association

    Community Involvement

    • Member of the Pro Bono Panel for the US District Court, Southern District of California
    • Past Secretary of the Solicitors’ International Human Rights Group
    • Past Trustee of KIIDS Trust Varanasi
  • Practice Areas
  • Education


    Postgraduate Diploma in Legal Practice, University of Law (with Commendation)

    Postgraduate Diploma in Law, University of Hertfordshire (with Distinction)

    • Judges’ Award

    B.A., Honors, English Studies, University of Nottingham