Ladan Mehranvar

About/Bio

Ladan Mehranvar is a Senior Legal Researcher at the Columbia Center on Sustainable Investment (CCSI). Her work centers on analysing the legislative and international legal frameworks governing international investment, and shaping the impacts that those investments have on sustainable development objectives. She focuses in particular on analysing international investment treaties and the investor-state arbitrations that arise under them, examining the implications those treaties and cases have for host countries' domestic policies and development strategies, including on the rights and interests of local communities. In addition, Ladan is a lecturer at Princeton University, where she teaches Environmental Law and Policy.

Recently Published

Rewriting Article 422: Ecuador’s Constitutional Court, ISDS, and the Limits of Judicial Constitutional Change

Introduction On 30 March 2026, Ecuador’s Constitutional Court issued Dictamen 19-25-TI/26A, conditionally approving the Agreement for the Promotion and Protection of Investments between Ecuador and the United Arab Emirates (the “UAE BIT”), including the investor-State dispute settlement (“ISDS”) mechanism established in Article 20. The ruling concludes a two-stage constitutional review: on 5 March 2026,…

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Time, Form, and Coalitions: Reflections on the 53rd Session of UNCITRAL Working Group III

The 53rd Session of UNCITRAL Working Group III (WGIII), held in mid-January 2026 in New York, marked another modest but revealing step in the long road toward reforming investor–State dispute settlement (ISDS). The meeting delivered some progress, particularly in clarifying what kind of legal instrument(s) might eventually emerge from the cluster of partially linked reform options grouped together for discussion…

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Fast-Tracking the UAE-Ecuador BIT: Executive Decrees, Constitutional Limits, and Democratic Resistance to ISDS

Introduction: a treaty everyone knows is unconstitutional Ecuador is once again at the centre of global debates on investor–State dispute settlement (ISDS). In December 2025, President Noboa signed a Bilateral Investment Treaty (BIT) with the United Arab Emirates (UAE) that re‑introduces ISDS into a legal order which, since 2008, has constitutionally prohibited the State from…

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