João Humberto Martorelli

Ana Cristina de Paulo Assunção is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Ana Cristina de Paulo, who practices law in São Paulo, Brazil, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ana Cristina de Paulo is held by other top lawyers in the same geographic and legal practice area.

Veridiana Police is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Veridiana, who practices law in Campinas, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Veridiana is held by other top lawyers in the same geographic and legal practice area.

Odel Antun is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Criminal Law. Odel, who practices law in São Paulo, Brazil, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Odel is held by other top lawyers in the same geographic and legal practice area.

José Gustavo Braga is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. José Gustavo, who practices law in Rio de Janeiro, Brazil, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which José Gustavo is held by other top lawyers in the same geographic and legal practice area.

Zilma Aparecida S. Ribeiro, is responsible for the labour department of the firm, both in the litigation and in the advisory areas. She graduated in law from the Law School of the University of São Paulo from which she holds a Masters Degree. Ms. Ribeiro has over 30 years of experience working as a lawyer, both in-house and as a legal consultant. Ms. Ribeiro also completed a Specialization Course in Civil Procedure at the Law School of the University of São Paulo. She has been r...

Ms. Renata Araujo has over 25 years of experience, with her career consistently focused on Labor Law. She leads the defense in labor litigation for major national and multinational companies across the energy, infrastructure, civil construction, aviation, textile, food, and paper and pulp sectors, among others. Ms. Araujo conducts strategic and preventive approaches for clients. She possesses vast expertise in monitoring corporate restructurings and judicial reorganizations, acting in the res...

Founding partner, Fernando Loeser is a tax specialist. He has a particular interest in litigation and acts on consultation matters. He covers the full spectrum of tax issues direct and indirect taxation and is frequently seen acting before the Superior Courts of Brazil. Fernando is well qualified to tackle complex litigation at judicial and administrative levels. He covers the full spectrum of tax issues, direct and indirect taxation and is frequently seen acting before the Superior Courts of...

Joyce Roysen is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Criminal Law. Joyce, who practices law in São Paulo, Brazil, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joyce is held by other top lawyers in the same geographic and legal practice area.

Mariana is the Managing Partner and Head of Corporate and M&A at Leite, Tosto e Barros Advogados, bringing over two decades of experience in Corporate Law, Mergers & Acquisitions, Governance, Compliance, and Data Protection. As Managing Partner, she leads the firm’s strategic direction and ensures operational excellence across finance, IT, marketing, and administration—combining leadership vision with technical and business precision. As Head of Corporate and M&A, Mari...

Alessandra Mara Cornazzani Sales is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law. Alessandra Mara Cornazzani, who practices law in São Paulo, Brazil, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alessandra Mara Cornazzani is held by other top lawyers in the same geographic and legal practice area.