O’Naghten Brothers Launch Boutique Firm at the Intersection of Global Strategy and International Disputes
- O'Naghten Brothers (EN)
- Jul 24
- 3 min read
FOR IMMEDIATE RELEASE
MIAMI, FL — July 24, 2025 Attorneys Juan and Luis O’Naghten, two of the most respected names in cross-border business and international arbitration, are pleased to announce the formation of O’Naghten Brothers, a boutique firm designed for clients navigating the complexities of global business, risk, and dispute resolution.
The firm unites decades of experience at the highest levels of international law, combining Juan’s deep background in cross-border transactions and business structuring with Luis’s reputation as a leading advocate and arbitrator in international dispute resolution. From advising governments and Fortune 500 companies to guiding generational family enterprises and multinational developers, the O’Naghten Brothers bring a rare blend of strategic insight, legal precision, and global reach.
“The O’Naghten brand, rooted in a family tradition of service and fealty, features falcons from our ancestral coat of arms, representing leadership, integrity, and resilience. This legacy shapes our commitment to building lasting partnerships and delivering principled service.” – Juan T. O’Naghten
“There are plenty of firms that do strategy. There are plenty that handle disputes. But the O’Naghtens do both—with rare judgment and seamless integration across borders,” said Edward Farah, founder and CEO of Capital Markets Financial Services, a capital markets group specializing in emerging market securities and distressed assets. “They don’t just solve problems—they anticipate them and help avoid them in the first place.”
In an era defined by shifting tariffs, geopolitical conflicts, sanctions regimes, currency volatility, and the rapid rise of digital and AI-driven business models, executives need counsel who can both foresee global headwinds and architect resilient, opportunity-driven solutions. The O’Naghten Brothers combine Juan’s transactional foresight with Luis’s dispute-resolution acumen—offering a holistic partnership from deal conception through enforcement.
Juan T. O’Naghten, known for structuring complex international real estate, finance, and commercial transactions, has advised clients across Latin America, Europe, and the U.S. for over four decades. He played a key role in drafting both the Florida LLC Act and the Florida International Arbitration Act—shaping the legal infrastructure for cross-border business in the state.
Luis O’Naghten is recognized globally for his work in investor-state and international commercial arbitration, with experience as both party counsel and arbitrator under ICC, ICSID, UNCITRAL, ICDR, and other major rules. Fluent in both English and Spanish, he has handled disputes across sectors including infrastructure, energy, defense, telecom, and finance.
“Luis has been a preeminent bilingual international arbitration counsel and arbitrator for many years – his knowledge of US and Latin American arbitration law and practice is unparalleled,” said Grant Hanessian, international arbitrator and former head of Baker McKenzie’s international arbitration practice.
“Juan has been my go-to adviser for over three decades. He has a gift for seeing around corners—and making complex transactions look simple,” noted Mario M. Bustamante, founder and CEO of OpticalTel, a telecommunications company specializing in fiber-to-the-home. “You can’t replicate this kind of experience or trust.”
Together, the brothers offer something increasingly rare in today’s legal market: deep experience, global fluency, and hands-on counsel that bridges business objectives with dispute strategy.
O’Naghten Brothers is based in Miami and operates globally. For more information or to inquire about representation, visit www.onaghtenbrothers.com
Photo credits: Andrea O’Naghten
Media Contact:
Alexandra Alcala
Email: aalcala@onghtenbrothers.com
Phone: +1 (786) 888-6483
Website: www.onaghtenbrothers.com
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