This is the first work to comprehensively address the issues arising in the context of multiple proceedings before investment treaty tribunals and propose a systematic approach to applicable coordination mechanisms based on a methodical review of international investment agreements, arbitration rules, arbitral decisions, and legal commentary.

• 1: Introduction


• 2: Characteristics of the international investment framework leading to multiple proceedings


• 3: Determining the jurisdictions of competing forums in the context of investment disputes


• 4: Mechanisms for the coordination of multiple investment proceedings


• 5: Hierarchy as a coordinative mechanism in investment treaty arbitration


• 6: The application of lis pendens and res judicata in investment treaty arbitration


• 7: Overarching principles for the coordination of multiple proceedings


• 8: Summary of results and outlook

Dr Hanno Wehland is a Legal Counsel at the Permanent Court of Arbitration in the Hague. He has previously practiced in the arbitration groups of Herbert Smith Freehills LLP, London, Eversheds LLP, Paris, and Wilmer Cutler Pickering Hale & Dorr LLP, London, and has extensive experience of both investment and commercial arbitration proceedings. He completed his doctorate in law at the University of Geneva under the supervision of Professor Gabrielle Kaufmann-Kohler and holds degrees from University College London and Humboldt University Berlin. He has published a range of articles in English and German, and also practices in French and Spanish.