Guilherme Santos Silva

Guilherme Santos Silva is a Partner at Abreu Advogados since 2004, working primarily on matters related to civil, commercial and transportation litigation matters, as well as on domestic and international arbitrations, for more than 28 years.

Guilherme is co-coordinator of the Litigation and Arbitration practice area at Abreu Advogados. He works in civil and commercial litigation and arbitration, with an emphasis on complex international and multi-jurisdictional proceedings.

In this area, he has a vast experience in international litigation and arbitration, having assisted and represented clients in cases involving multiple jurisdictions, such as Angola, United Kingdom, Saudi Arabia, China, Switzerland, France, Israel, Brazil, Mozambique, Germany and the Netherlands, besides Portugal.

Guilherme Santos Silva is also co-coordinator of the Angolan Desk of Abreu Advogados, having worked actively in matters related to Angola for more than 20 years, assisting foreign companies with interests in that country in the Energy (Oil & Gas and Electricity), Telecommunications, Aviation and Maritime, Natural Resources, Real Estate and Construction, Compliance and Regulatory, as well as foreign investment, commercial and corporate law and dispute resolution sectors.

He also assists Angolan companies operating abroad, as well as in matters in other Portuguese-speaking African countries, having in-depth knowledge of the law in a wide range of sectors. Guilherme has also had several cases in Portugal relating to construction, sale, mortgage, seizure and attachment of ships and aircraft and related contractual matters, having assisted clients of various nationalities in the respective proceedings.

He was an Assistant Professor at the Moderna University of Lisbon from 1993 to 2007. Guilherme is the author and co-author of several articles and works on matters related to his practice, published by national and international publishers, including Wolters Kluwer, Martinus Nijhoff (Brill) Publishers and Yorkhill Law Publishing. More recently, he wrote the chapter dedicated to “Recognition and Enforcement of Foreign Arbitral Awards” of the work “International Arbitration” in Portugal (Kluwer Law) and contributed to the chapters dedicated to Portugal of “Force Majeure” (Brill-Nijhoff) and “Enforcement of Foreign Judgements” (Kluwer Law).

He contributed to the Portuguese chapter and its update of the “New York Convention Guide” (https://newyorkconvention1958.org). In 2022 he co-authored the first “Arbitration, Conciliation and Mediation Law of Mozambique Commented”.

He also frequently participates in national and international conferences and seminars on litigation and arbitration, where he has also been a speaker.