Luis O’Naghten is a trusted advocate in international arbitration, with a practice spanning investor-state disputes, cross-border commercial conflicts, and sovereign representation. His work regularly involves proceedings under ICSID, ICC, UNCITRAL, and ICDR rules, often conducted in both English and Spanish.
 
In a high-profile ICSID arbitration, Luis represented a contractor against the Republic of Peru in a dispute over the expropriation of six hydroelectric plants, navigating both legal complexity and political sensitivity.
 
In an ICC arbitration seated in Madrid, Luis defended a foreign affiliate of a Fortune 100 defense contractor in a $155 million Spanish-language dispute concerning the repair of two submarines, brought by a Venezuelan government agency.
 
He also served as lead counsel in a multijurisdictional commercial dispute involving more than $90 million in claims, coordinating litigation filed in the London High Court, Geneva, and Miami, on behalf of a prominent Venezuelan businessman and affiliated companies.
 
These matters illustrate Luis’s expertise in managing complex, multilingual disputes and his ability to lead cohesive strategies across borders, institutions, and legal systems.