The question of the existence of legal protection for foreign investors under customary international law (or “custom”) has always been controversial. As a result of this perceived lack of established customary principles, States concluded thousands of bilateral investment treaties in the...

International investment agreements (IIAs) almost universally define their temporal validity and thus set conditions for States’ exit from these treaties. This study presents the results of the survey of language that determines the temporal validity of 2,061 bilateral investment agreements...

Investor-State dispute settlement mechanisms (ISDS) are an important component of most International Investment Agreements (IIAs) and have significant influence on how disputes between States and investors are resolved. This statistical survey of a large sample of 1,660 bilateral investment...

Advanced systems of domestic corporate law generally apply a “no reflective loss” principle to shareholder claims. Shareholder claims are permitted for direct injury to shareholder rights (such as voting rights). But shareholders generally cannot bring claims for reflective loss incurred as...

Many governments have expressed concerns about the uncertainty linked to the perceived inconsistency of treaty interpretation in Investor-State dispute settlement (ISDS). An OECD-hosted intergovernmental investment roundtable has been considering a range of tools through which governments can...

This paper reviews alleged societal benefits and costs of International Investment Agreements (IIAs) as suggested by academia, governments, business and civil society. It sets out the wide range of issues that diverse actors have proposed in the context of assessing the societal benefits and...

The question of expropriation is at the heart of modern foreign investment law, yet remains an area of great uncertainty and ambiguity. Neither treaty law nor existing jurisprudence provides clarity on the questions of when government action amounts to an expropriation or what to do if does.This...

Many developing countries are considering curtailing enforcement provisions available to investors in bilateral investment treaties (BITs). This change will likely benefit developing countries by restoring a portion of their sovereign autonomy, but perhaps at the cost of a decline in foreign...