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Ripe For Refinement: The State’S Role In Interpretation Of Fet, Mfn, And Shareholder Rights, Lise Johnson

Columbia Center on Sustainable Investment Staff Publications

Over recent years, many states have taken steps to refine and modernize their investment treaties. These reforms, however, are typically only included in newer treaties or model agreements. States continue to be exposed to claims, litigation, and potential damages under older “old-style” agreements. These risks are particularly acute given that tribunals have often permitted investors to “treaty shop” to obtain more favorable protections, and have also permitted investors to use the most-favored nation (MFN) provision to “import” more investor-friendly (or at least less clear) provisions from other treaties.

This working paper discusses one strategy states can use to try to …