Conflicts and Tentative Solutions to Protecting Personal Data in Investment Arbitration

Abstract Personal data protection in investment arbitration is increasingly important as more and more countries enact mandatory personal data protection laws and the COVID-19 pandemic makes online hearings the new normal. Tribunals have to consider critical, yet unresolved, normative questions, such as (i) how data protection laws would influence the trend towards transparency in investment arbitrations brought pursuant to modern investment treaties; (ii) whether a party can invoke a data protection law to reject access to fundamental documents and completely shift the power in an arbitration proceeding; (iii) whether it is good to have multiple data protection laws directly applicable in an investment arbitration; and (iv) whether the so-called Brussels Effect may take hold of investment arbitration. These questions directly address the alleged legitimacy crisis of investment arbitration (for example, procedural transparency and efficiency) in the digital era. They also have a critical impact on the fairness of proceedings and are closely related to the protection of fundamental human rights and the concern of digital surveillance. This article comprehensively maps the consensual and mandatory applications of data protection laws in investment arbitration. Adopting comparative-law and conflict-of-laws methodologies, it intends to provide tentative solutions to the four questions mentioned above