Mercedes is Ontier’s global head of international arbitration. She has taken part in complex international arbitration proceedings advising on all types of contractual disputes in English and Spanish.
Mercedes also advises on enforcement proceedings of foreign judgments and awards, as well as other issues relating to private international law. Prior to joining Ontier she worked at DAC Beachcroft for 2 years, and Pérez-Llorca for 14 years.
She regularly sits as arbitrator.
She is listed in the Chambers Global and Europe and Legal 500 rankings.
Mercedes has significant experience representing or involving Saudi Arabian entities in complex global arbitration disputes.
Updated at: 14/03/2025