This book contains the written contributions to the 12th conference on “New Developments in International Commercial Arbitration”, organized by the CEMAJ (French acronym for Research Center on Alternative and Judicial Dispute Resolution Methods) of the University of Neuchâtel Faculty of Law. Highly qualified and experienced arbitration practitioners present some of the most significant new developments in international commercial arbitration : Revision of Chapter 12 of the PILA of Why and How to Modernize a (Still) Modern Law? Felix Dasser Mission Impossible? - Challenging Investment Treaty Award before the Swiss Federal Tribunal Matthias Scherer Sports Arbitration and the European Convention of Human Rights - Pechstein and beyond Antonio Rigozzi Review of the Recent Case Law of the Swiss Federal Supreme Court Catherine Anne Kunz International Commercial Courts - the Projects in Zurich and Geneva Martin Bernet / Arun Chandrasekharan How Will the COVID-19 Pandemic Change Arbitral Proceedings? Fabrice Robert-Tissot