With an enviable track record in representing sovereign states, Arnold & Porter ‘stands out for its deep expertise in international arbitration’. David Reed is ’a relentless advocate’; Patricio Grané Labat sits as arbitrator in ICC proceedings, in addition to acting in arbitrations; Jane Wessel has longstanding experience in investor-state and commercial arbitrations; and Charlotte Mallorie is ‘one of the best lawyers around’. Alastair Brown is another experienced practitioner. Recently involved in seven investor-state arbitrations, Álvaro Nistal was made partner in January 2025.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘The partners are very hands on and responsive, and the associate team has very strong members.’
‘A&P's IA team is very strong, having been market-leading for many years and possessing a huge wealth of experience and knowledge.’
‘The team at Arnold & Porter stands out for its deep expertise in international arbitration and its strategic, client-focused approach.’
‘The lawyers have strong backgrounds in both common and civil law, allowing them to handle complex, cross-border disputes effectively.’
- ‘David Reed is very responsive to clients, leaves no stone unturned, and thinks of every detail and the big picture. He is a relentless advocate.’
- ‘Patricio Grané Labat is a tenacious advocate for his clients. He will leave no stone unturned in presenting his client's case.’
Key clients
- Republic of Peru
- Kingdom of Thailand
- Republic of Colombia
- Republic of Costa Rica
- Republic of Bulgaria
- Kingdom of Sweden
- Czech Republic
- Republic of Korea
- Republic of Uruguay
- Republic of El Salvador
Work highlights
Defending Czech Republic against seven solar sector investment arbitrations.
Representing Colombia in an ICSID arbitration against Glencore International, the dispute concerning the Cerrejón mining project.
Successfully defended Peru against a $150m claim brought under the United States-Peru Free Trade Agreement by Kaloti, in relation to seizures of gold shipments due to money-laundering and illegal mining concerns.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Alvaro Nistal
Practice head
Patricio Grané Labat ; David Reed
Other key lawyers
Bart Wasiak; Roberto Lupini; Andrea Mauri Paricio; Paloma García Guerra; Julia Calderón Carcedo; Peter Saban; Joel Dahlquist