skip to content

Research in International Investment Law

The research projects conducted by the IILCC cover all aspects of international investment protection and investor-state dispute settlement. It is the aim of the Centre to thoroughly analyze current developments and complexities of international investment law from an academic and practical perspective. Furthermore, the Centre wishes to contribute through its publications to a discourse among all stakeholders on future developments of the international investment regime. In doing so, professors of the Centre regularly cooperate with investment law practitioners from Germany and abroad.



International Investment Law - A Handbook

International Investment Law - A Handbook

Analysis of the essential aspects of international investment law

IILCC Study Group on ISDS Reform

The IILCC Study Group on ISDS Reform is a collaboration of young researchers associated to the IILCC doctoral network. The aim of the Group is to constructively contribute to the ongoing discussions on a reform of Investor-State Dispute Settlement. To this end, the Group published a Report on the creation and implementation of a Multilateral Investment Court .

The Report provides an overview on essential questions related to the creation and implementation of a MIC and corresponds to the agenda of the 38th session of UNCITRAL Working Group III in January 2020. The Report along with urther information about the Study Group is available here.

Digest of International Investment Jurisprudence

One of the flagship projects of the IILCC is the Digest of International Investment Jurisprudence. This online database provides a systematic collection of legal statements from decisions rendered in investment treaty arbitrations and supports scholars, students and practitioners in their work and studies.

The Digest is available at and is edited by the IILCC in cooperation with the University of Siegen. Its use is free of charge. Despite making no claim to be comprehensive, new content is added constantly. Currently, the database features over 1000 statements made by investment tribunals which can be searched by case, topic or relevant article.

German Investment Treaty Disputes

On, the IILCC publishes a database containing all pending and conducted investment treaty arbitrations involving German parties. The website offers its users a comprehensive overview of all investment treaty claims, including claims brought by German investors against foreign host States and claims brought by foreign investors against the Federal Republic of Germany. The database is edited by Dr. Lars Markert and Dr. Christoph Hölken.

UN Investment Support Programme for the Least Developed Countries

As a proud partner of the UN Investment Support Programme for the Least Developed Countries, the IILCC contributes its scientific expertise to legal practice.

The Investment Support Programme for the Least Developed Countries was initiated by the United Nations (UN) and supports the world's poorest developing countries in investment law issues through its roster of experts. The programme is coordinated by the International Development Law Organization (IDLO), an international organization based in Rome, on behalf of the UN.

The IILCC has been an official partner of the programme since September 2018.  Inquiries from governments, state-owned enterprises and private investors from eligible countries can thus be forwarded by IDLO to the IILCC. The IILCC board of directors decides on the acceptance of a project on a case-by-case basis. Projects can relate to the training of government representatives, support in investment-related negotiations or investment arbitration proceedings.

Through its involvement in the Investment Support Programme, the IILCC actively contributes to ensuring that the less experienced and financially strong players also have access to investment law expertise. Further information about the programme can be found here.

Visiting Research Program

The Centre is regularly pleased to welcome visiting scholars to conduct independent research projects in international investment law whilst based in Cologne. Visiting researches may get involved in ongoing IILCC projects, use the facilities of the Centre and benefit from the extensive investment law library. If you are interested in the visiting research program, please contact Jun.-Prof. Dr. Julian Scheu or a member of the IILCC board of directors and provide a description of your research project and a current curriculum vitae. Further information on planning and conducting a research stay can be found on the website of the Welcome Centre of the University of Cologne.