In-Depth Bilateral Investment Treaty Case Studies

Bilateral Investment Treaties (BITs) are the cornerstone of international investment law, providing the legal basis for thousands of arbitration cases. By analyzing specific case studies, we can uncover the practical application of treaty language and how different wordings lead to vastly different outcomes.

The Evolution of Treaty Language

Older "first-generation" BITs often provided broad, unqualified protections for investors. However, modern "new-generation" treaties are more specific, explicitly defining what constitutes an investment and limiting the scope of fair and equitable treatment. Case studies show that this shift has given states more room to regulate without fear of exorbitant damages.

Key Pillars of BIT Disputes

Most case studies in the realm of BITs center on a few core protections:

• Most-Favored-Nation (MFN) clauses, used to "import" better terms from other treaties.
• Protection against unlawful expropriation and the requirement for prompt compensation.
• The guarantee of full protection and security (FPS).

For a deeper dive into specific treaty interpretations, explore our Articles. We also maintain a list of the most cited treaties and cases in our Popular section.

The Trend Toward Treaty Termination

A notable trend in recent years is the wave of treaty terminations, where states unilaterally withdraw from BITs to avoid ISDS. Case studies of these terminations reveal a complex legal battle over "sunset clauses," which often protect existing investments for a period of 10 to 20 years after the treaty is terminated, ensuring that investors are not left without recourse.