Investment Treaty Arbitration: Jurisdiction Ratione Temporis (2026)

The latest edition of In-Depth: Investment Treaty Arbitration, published by Lexology, features a chapter by Pillsbury International Arbitration attorneys Gary Shaw and Carolina Plaza on jurisdiction ratione temporis, or temporal jurisdiction. The chapter explores how tribunals determine the temporal scope of investment treaty protections, addressing issues such as treaty entry into force, non-retroactivity, treaty termination, sunset clauses and applicable time limits through the lens of recent arbitral decisions.