International arbitration

Three Crowns LLP

Client Satisfaction

Three Crowns LLP is consistently mandated to act in the market’s most significant commercial, investment and inter-state arbitral cases, as well as arbitration-related litigation. The firm also fields sector specialists in pharmaceuticals, aerospace, energy, construction, telecoms, and financial services. Following Russia’s invasion of Ukraine in February 2022, the practice was instructed by numerous energy-sector clients in high-value commercial disputes that concerned their exits from Russia. A ‘real star in commercial arbitration’, Constantine Partasides KC routinely obtains mega-value awards on behalf of major clients. Gaëtan Verhoosel KC is an expert in commercial and treaty arbitrations involving power, renewables, banking, infrastructure, and oil and gas. The practice also comprises Middle East disputes specialist Reza Mohtashami KC, who is a ’very competent arbitration lawyer’, highly regarded commercial arbitration expert Manish Aggarwal, and Leilah Bruton, who ‘excels at both witness examination and delivering impactful closing arguments’. Other experienced arbitration practitioners are Jonathan Fernandes, who acts in international commercial and investment treaty arbitrations across a range of sectors, and Richard Trinick, who focuses on energy, M&A, telecoms and technology disputes. Carmen Martinez Lopez relocated to the firm’s Madrid office in October 2023, while Maanas Jain and Vee Vian Thien left the firm in September 2023 and June 2024, respectively.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

‘Highly skilled partners, who deliver very good advice. Written communications are also very good.’
‘3C leverages cutting-edge legal analytics to build rock-solid cases. Their team of litigators, paralegals and legal technologists work together seamlessly, ensuring every angle is covered and no stone is left unturned.’
‘Their lawyers come from diverse backgrounds and possess a wide range of litigation experience, with a proven track record of success. Compared to traditional firms, 3C offers a more dynamic and data-driven approach.’
‘Very responsive. Practical, commercial advice, with suggested arbitration strategies that prove successful.’
‘Constantine Partasides KC is a real star in commercial arbitration. He has an exceptional legal mind and courtroom presence, with in-depth knowledge of the law, honed through years of experience.’
‘Constantine Partasides KC is indeed a masterful advocate - able to dissect complex legal issues and present compelling arguments. His reputation for excellence attracts high-profile cases and commands respect from judges and juries alike.’
‘Reza Mohtashami KC is a very competent arbitration lawyer and is very responsive.’
‘Leilah Burton is a persuasive storyteller with a sharp legal mind. She can dissect complex legal issues and translate them for a judge or arbitrator, weaving a compelling narrative that resonates. She excels at both witness examination and delivering impactful closing arguments.’

Key clients

American Express
Boeing
BP
Chevron
ConocoPhillips
ContourGlobal
Crescent Petroleum
Eni
ExxonMobil
PETRONAS
Sacyr
TotalEnergies
Trafigura

Work highlights

Representing Crescent Petroleum in two cases against the National Iranian Oil Company, arising out of a gas sale and purchase agreement.
Obtaining a successful award on behalf of ContourGlobal, in a project-related, London-seated ICC arbitration against the Government of the Republic of Kosovo and various publicly owned enterprises.
Acting for Guardian Holdings, KLIC Holdings, Apfin Investment Pte and Hoenir (the investors) in a significant $1.7bn shareholder dispute with the majority owner and CEO/chairman of Korea’s third-largest life insurance company.

Lawyers

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