Investor-State Law Guide

Curious about the journey of ISLG? Watch this exclusive interview with founder, J. Christopher Thomas, KC, where he shares his experiences and insights about ISLG.


Contact us to learn more about how ISLG can make your research more accurate, comprehensive and efficient.

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Investor-State LawGuide (ISLG) was born of the need to provide legal researchers with accurate and comprehensive information at a reasonable cost. With decades of experience in international trade and investment law, Greg Tereposky and Chris Thomas endeavored to solve this problem when they created Tologix, ISLG's parent company. Tologix developed a software platform that efficiently captures and disseminates subject matter expertise to users with the goal of streamlining the cumbersome legal research process.

Using the Tologix software platform, a skilled team of data capture specialists and investment treaty law experts built and launched ISLG in 2011. ISLG's unique ability to map the complex and disparate area of investment treaty law quickly made it a success, and it is currently used by the world's leading law firms, governments, academic institutions and international organizations.

Today, ISLG is powered by a dedicated team of subject matter experts who maintain and contribute value-added material to its research tools. In parallel, Tologix continues to invest in the software platform, and is developing new technologies that enhance users' ability to get the specific information they need, faster.

The three pillars of research

ISLG’s three pillars of research, Precision, Accuracy, Comprehensiveness, is designed to efficiently elaborate through the complex and diverse world of investment treaty law.

Precision: ISLG’s Subject Navigator and Citators focus on what tribunals, committees and national courts decide, not on what parties submitted. The Jurisprudence Citator is underscored by ISLG’s ‘pinpoint references,’ which take you directly to the passage within each document.

Accuracy: Awards and decisions are reviewed in accordance with a well-designed protocol, developed in consultation with experts in the field and refined over the last 12 years  AI is not involved in this process. All entries go through multiple layers of review before being entered into the ISLG database.

Comprehensiveness: No other database in the marketplace subjects awards and decisions to such exacting curation. You will find every reference to legal instruments, previous jurisprudence and publication that publicly-known documents have referred to on ISLG. A distinctive feature of ISLG is that it allows researchers to approach a problem from multiple angles.

Meet the team

Greg Tereposky


Paul Moon

Director of Legal Content & Product Manager

Kishan Badri

Director of Sales

Martin Laporte

Chief Technology Officer

Marysia Raptis

Office Manager

Irit Weinfeld

Senior Document Manager

Sherita Raghoenath

Marketing Manager

Séverine Beaudet

Senior Legal Content Manager

Mark D. Skilling

Senior Editor


Alejandro Barragan

Investment & Trade Economist, Tereposky & DeRose LLP

Olga Boltenko

Partner, Fangda Partners Hong Kong
Chairperson, ICC-HK Commercial Law and Practice Committee

Ximena Iturriaga

Legal Consultant, Tereposky & DeRose LLP

Sapna Jhangiani, KC

International Legal Counsel, Attorney-General's Chambers, Singapore

J. Cameron Mowatt

Senior Counsel, Tereposky & DeRose LLP

Peter Nikitin

Independent Lawyer-Linguist and Arbitration Consultant

Andrew Newcombe

Associate Professor, University of Victoria, Canada

Jennifer Radford

Partner, Tereposky & DeRose LLP

Laura Yvonne Zielinski

International Associate, Holland & Knight LLP

Legal Analysts

Ivaylo Dimitrov

Associate, Omnia Strategy LPP, London

Hassan Kamalinejad

Ph.D. Candidate, University of Victoria, Canada

Gary López Vélez

Counsel at the Ecuadorian State Attorney General's Office

Eleo Szulc

International Lawyer, World Anti-Doping Agency

Our network of powerful legal research products

Why our clients continue to trust ISLG

Quite simply, the leading resource for investor-state law.

John Templeman
Counsel, King & Spalding LLP

A very well thought out and innovative website, making it one of the first ports of call for research in the field of investment law.

Jamie Gallego
Counsel, Lalive

ISLG is an invaluable research tool, particularly in an area of law that lacks a traditional system of precedent. It enables the user to have confidence that their research is thorough and up-to-date.

Tracey Epps
Trade Law Consultant, Chapman Tripp

Thousands of hours have been dedicated by ISLG’s editors and contributors to develop the Subject Navigator. The result is a transfer of legal knowledge from experienced practitioners and academics to ISLG’s users.

J. Cameron Mowatt
Editor, Investor-State LawGuide and Senior Counsel, Tereposky & Derose LLP

Investor-State LawGuide is one of the main databases about foreign direct investment in combination with international arbitration on the Peace Palace Library website. ISLG is very useful in finding ICSID awards and bilateral investment treaties (Full-text). The refinement options in searching result in a perfect navigation through the guide and the annotations are the final touch.

Raymond Ridderhof
International, Comparative and Foreign Law Librarian, Peace Palace University

With its intuitive interface and specific research tools, including the subject-matter navigator and the jurisprudence citator, ISLG has revolutionized the way we do research in connection with investor-state disputes. It is now indispensable to professionals in the field.

Noor Davies
Associate, White & Case LLP