Georgetown Law
Georgetown Law Library

International Investment Law Research Guide

This guide features resources on international investment law, in general, and investor-state arbitration, in particular.


International investment law governs foreign direct investment and the resolution of disputes between foreign investors and sovereign states. This guide identifies the best resources for locating primary and secondary materials related to international investment law, with an emphasis on bilateral investment treaties (BITs) and the arbitration of investor-state disputes.  For advice on researching the resolution of international commercial disputes between private parties, consult the Law Library's guide to International Commercial Arbitration.

Key Resources for International Investment Law Research

The subscription databases described below focus exclusively on international investment law and investor-state arbitration.

  • Investment Arbitration Reporter (IAR). 
    IAR publishes articles and commentary about pending and recently concluded investor-state arbitrations.  Search by keyword or browse by country, topic, industry or treaty.  IAR also has profiles of leading arbitrators.
  • Investment Claims.
    This database includes more than 900 arbitral decisions and awards, more than 1,200 bilateral investment treaties, and overviews of investment treaty practices in 19 jurisdictions.  It also has selected journal articles and book chapters on investment law published by Oxford University Press.
  • Investor-State Law Guide (ISLG). 
    Use the Subject Navigator to search or browse for arbitral decisions by topic.  Use the Article Citator to determine how arbitral tribunals have interpreted specific provisions of investment treaties.  Use the Jurisprudence Citator to determine whether a prior arbitral decision has been cited by tribunals in subsequent cases.  To access video tutorials that will show you how to use these powerful tools, click on the "Learning Centre" link in the upper right-hand corner of the homepage.

These databases cover both international investment law and international commercial arbitration between private parties.

  • Kluwer Arbitration.
    Includes the texts of more than 2,000 bilateral investment treaties and nearly 300 investor-state arbitral decisions and awards.  Also provides access to secondary sources on international investment law, including ten specialized journals.  The Kluwer Arbitration Blog publishes informed commentary by leading practitioners.
  • Transnational Dispute Management (TDM).
    TDM publishes an online journal featuring peer-reviewed articles about investor-state disputes and other transnational commercial disputes.  TDM also maintains a growing database of legal materials, which includes bilateral investment treaties, arbitral decisions and awards, and national legislation governing foreign investment.  In addition, TDM hosts OGEMID, a moderated discussion forum that focuses primarily on investment disputes in the oil, gas, and energy sectors.