D. Jason File


As a seasoned international trial lawyer, I use my experience prosecuting war crimes in The Hague and handling cases in international arbitration to help my clients successfully resolve their most sensitive and difficult cross-border disputes.

Jason File focuses his practice on high-stakes arbitration including investor-state arbitration, international commercial arbitration, mass arbitration claims, and corporate executive disputes. He has successfully represented clients in arbitrations valued at up to $4 billion, governed by all major institutional rules, under the substantive laws of jurisdictions across Asia, Europe and North America. Industries include technology, biotech, insurance, finance, natural resources, and telecommunications. Equally at home developing evidence or litigating before a tribunal, he draws upon extensive international investigation and trial experience, having previously served as a U.N. war crimes prosecutor in The Hague, where he successfully prosecuted two of the largest and most complex international criminal cases in history.

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  • Yale Law School
    JD, 2004

  • Oxford University
    M.Phil., International Relations

  • Yale University
    BA, EP&E (Ethics, Politics & Economics) and Humanities

Admissions & Credentials

New York

District of Columbia

England & Wales

Media & Insight


  • American Society of International Law (ASIL)

  • Institute for Transnational Arbitration

  • International Bar Association

  • Federal Bar Association, Southern District of New York Chapter

  • American Bar Association

  • New York State Bar Association

  • District of Columbia Bar Association