Paulo Guilherme de Mendonça Lopes

Paulo Guilherme de Mendonça Lopes

Practice Areas


Agribussines, Automotive, Banking and Finance, Consumer, Litigation and Conflict Resolution, Complex Contracts and Negotiations, Economic and Competition / Antitrust, Energy and Natural Resources, Bankruptcy and Restructuring, Management of Legal and Arbitration Assets and Credit Rights, Real Estate, Industry and Manufacturing, Infrastructure, Administrative & Public Law, Chemistry, Restructuring of Debts and Credits, Insurance, Corporate, Telecommunications, Shipping and Logistics.


Phone number: +55 11 3847-3902


Mr. Lopes has 30 years of experience in conducting business disputes and is recognized by specialized national and international publications as one of the most important Brazilian lawyers. Acted in complex cases of arbitration and litigation, dealing with businesses in the areas of infrastructure, financial services, corporate issues, debt restructuring and commercial contracts.

According to the publication the Legal 500 “under the leadership of Paulo Guilherme de Mendonça Lopes, the litigation cases conducted by Leite, Tosto e Barros are complex and involve high values, especially in relation to corporate and infrastructure issues”.


Análise Advocacia – One of the most admired lawyers in Brazil (2006 to 2022).

Análise Advocacia – One of the 35 professionals most admired since the first edition (2020).

Benchmark Litigation – Litigation Star: Arbitration, Commercial (2020 and 2021).

Best Lawyers Brazil – Litigation (2020 and 2022).

Best Lawyers Global – Litigation (2020).

Chambers Global – Dispute Resolution: Litigation (2008 to 2015).

Chambers Latin America – Dispute Resolution: Litigation (2008 to 2017).

Chambers Brazil – Dispute Resolution: Litigation (2022).

Client Choice – Litigation (2016).

LACCA Approved – Litigation (2014 to 2023).

LACCA Approved – Thought Leader, Litigation (2021 and 2023).

Latin Lawyer 250 – Arbitration and Litigation (2014 to 2023).

Leaders League – Arbitration (2016 to 2022).

Leaders League – Bankruptcy (2021 and 2023).

Leaders League – Civil and Commercial Litigation (2016 to 2022).

The Legal 500 – Bankruptcy and Restructuring (2013 to 2023).

The Legal 500 – Dispute Resolution: Arbitration (2013 to 2021).

The Legal 500 – Dispute Resolution: Litigation (2013 to 2023).

Who’s Who Legal Brazil – Litigation (2009 and 2010).

Educational Background

Graduated in Law from Universidade Mackenzie.

Other Activities

President of the Special Commission for Mediation and Arbitration of the Brazilian Bar Association – São Paulo section, from 2016 to 2018.

He was assistant professor of civil law and civil procedure at PUC/SP between 1992 and 2006. He is the co-author of the book O Processo de Tiradentes and Justiça no Brasil – 200 Anos de História, in addition to articles published in specialized journals, such as: “Propostas de Critérios para a Distinção das Sentenças Arbitrais dos demais Provimentos Proferidos nos Procedimentos Arbitrais”, published in the book Temas de Mediação e Arbitragem, “Agravo em agravo de instrumento contra a inadmissão de recurso especial”, published in the book Revista de Direito Mercantil nº 120, and “Cheque administrativo : possibilidade de a instituição financeira acolher oposição feita pelo endossante”, published in the book Revista de direito mercantil, industrial, econômico e financeiro, v. 42.

In addition, Paulo Guilherme has given several lectures, among which we can highlight the following:

In what cases arbitration could help your company and how to broaden the chances of success in an arbitration proceeding: in the Congress promoted by Lacca, in São Paulo/SP (April 2015)

General aspects of arbitration: at the XXI National Conference of Lawyers, of the Brazilian Bar Association, in Curitiba/PR (November 2011);

The arbitration clause in contracts: principles and relevant aspects: in the São Paulo section, of the Brazilian Bar Association (September 2011);

Legal interest, arrears and penalties for default of contractual obligations according to the new Civil Code: organized by International Business Communications – IBC, held in São Paulo/SP (October 2003);

Comparative analysis and critical points among limited companies and corporations: organized by IBC, held in São Paulo (October 2003);

Main changes to the new Civil Code in banking, financial and mercantile practices: organized by IBC, held in São Paulo/SP (August 2003);

New company rules according to the new Civil Code: organized by IBC, held in São Paulo/SP (May 2003);

Clarifying the changes and obligations of the new Civil Code in financial institutions: organized by IBC, held in São Paulo/SP (February 2003);

The new Brazilian Civil code and companies: organized by Mission, held in São Paulo/SP (November 2002).


Portuguese and English.
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