Financial Conflicts of Interests and ‘Evident Partiality’ of Arbitrators: State of Affairs Post Monster Energy and Impact of the 2024 Revised IBA Guidelines

Under Section 10(a) of the Federal Arbitration Act (FAA), an arbitral award may be vacated where there is ‘evident partiality’ in the arbitrators. However, as the business of international arbitration becomes increasingly commercialized, U.S. federal courts have struggled to define the boundaries of disclosure in an era of complex, intertwined financial interests. This article examines the inconsistent U.S. jurisprudence regarding the ‘evident partiality’ standard, focusing on the unique challenges posed by an arbitrator’s financial interests – including ownership stakes in arbitral institutions and the ‘repeat player’ effect. Through a comparative analysis of landmark decisions such as Monster Energy Co. v. City Beverages and EHM Productions, Inc. v. Starz Entertainment, the author evaluates how the 2024 Revised IBA Guidelines on Conflicts of Interest provide a critical normative framework for practitioners and judges. The article suggests that while the Guidelines remain non-binding soft law, their rigorous application offers a viable path toward reconciling the commercial realities of the arbitral marketplace with the foundational requirement of transparency. By providing a modern lens through which to view past vacatur decisions, the author concludes that a strict adherence to the IBA Guidelines would clarify existing gray areas and foster a more predictable and uniform jurisprudence across the U.S.