Investor-State Law Guide

Learn more about the features and benefits of ISLG.

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Your legal research, made easy

ISLG allows researchers to analyze key investment treaty materials.

Pinpoint relevant information quickly with a suite of advanced research tools

Map relationships between relevant materials and past decisions by tribunals

Review extensive content analysis conducted by subject matter experts

Gain data and insight on the individuals and organizations involved in your case

Our intuitive research product contains all materials relevant to publicly available investment treaty cases. Learn More

Organizations that use ISLG


Browse through all cases and documents related to your research

View our Disputes Library or Treaties and Rules Library to browse through all the documents related to investment treaty law.

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Looking for a person or organization relevant to your research?

View our People and Organization Profiles to learn more about who is involved in cases relevant to your research.

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Why our clients continue to trust ISLG

“ISLG has made it easier and more cost-effective to research issues relating to investment treaty arbitration. The Jurisprudence Citator, which shows how specific decisions have been treated by subsequent investment treaty tribunals, is particularly useful.”

Kristen Young
Partner, White and Case LLP

“ISLG is a very powerful and useful tool. It is a cost-effective research tool that is a benefit to our practice. I would recommend it to any lawyer practicing in international arbitration. It is not a plus. It is a must!”

Alvaro Galindo
International Counsel, Dechert LLP

“ISLG is an unparalleled database of primary materials in investor state law and is supported by a powerful search engine. It is useful to practitioners and academics alike and equally practical for new and seasoned users. The lack of secondary material and the focus on primary sources focuses the mind to what really matters. Even when I have conducted my own independent research I always double-check with the ISLG database.”

Professor Loukas Mistelis
Director, School of International Arbitration, Centre for Commerical Law Studies, Queen Mary University of London

“ISLG is a phenomenal tool. It basically does the research for you! Powerful and easy to use, it makes getting to right answer much quicker. I love that there are so many ways to conduct research (by topic, rules, treaty, case). The subject-matter navigator is particularly useful at providing an overview of the case law regarding a specific issue. Highly recommended!”

Elisa Botero
Associate, Curtis, Mallet-Prevost, Colt & Mosle LLP

"ISLG is your one-stop resource. No other database provides the researcher with so many effective and efficient ways to research and access treaties, rules of arbitration, decisions and awards, and other related documents."

Marci Hoffman
Lecturer in Residence and Associate Director, Berkeley Law Library