Firm PROFILE
Leite, Tosto e Barros Advogados
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Leite, Tosto e Barros Advogados

Brazil 2026

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Rankings

Brazil: Contentious
Leading firm in Brazil:
Brazil: Transactional
Brazil:

Top figures | Brazil: Contentious

83

Lawyers

47

Partners

148

Company Size

Content provided by Leite, Tosto e Barros Advogados

Brazil

Brazil: Contentious

Overview

Provided by Leite, Tosto e Barros Advogados

Leite, Tosto e Barros Advogados is a São Paulo-based business law firm recognised for one of Brazil’s leading dispute resolution practices, covering litigation, arbitration and complex administrative proceedings. The firm advises companies across multiple sectors, combining strategic litigation, restructuring, corporate, tax and labour expertise with a close partner-led approach focused on practical and business-oriented solutions.

Industry sectors (3)

  • Energy
  • Infrastructure
  • Banking & Financial Services

Capabilities (11)

  • Dispute Resolution: Litigation
  • Dispute Resolution: Arbitration
  • Restructuring & Insolvency
  • Labour & Employment
  • Tax: litigation
  • Tax: non contentious
  • Energy & Natural Resources: Power
  • Public Law
  • Corporate & M&A
  • Capital Markets: Debt
  • Consumer Law

Key people

Provided by Leite, Tosto e Barros Advogados

  • Ricardo Tosto

    Partner

  • Zanon Barros

    Partner

  • Daniel Albolea

    Partner

  • Luciana Arduin

    Partner

  • Mariana Nogueira

    Partner

  • Patricia Rios

    Partner

  • Paulo Guilherme

    Partner

  • Rodrigo Quadrante

    Partner

Work & experience

Provided by Leite, Tosto e Barros Advogados

Leite, Tosto e Barros Advogados is a Brazilian powerhouse with 30+ years of excellence, merging technical rigor with strategic business vision.Our partner-led model ensures senior expertise in every mandate.Specializing in high-stakes Strategic Litigation, Tax, Corporate/M&A, and Regulatory, we navigate complex landscapes to deliver results.LTB stands out for its agility and deep market insight, providing legal certainty and sophisticated solutions for the most challenging global business cases.

Top figures | Brazil: Contentious

83

Lawyers

47

Partners

148

Company Size

Content provided by Leite, Tosto e Barros Advogados


Brazil

Brazil: Transactional

Overview

Provided by Leite, Tosto e Barros Advogados

  • Firm Details

    Founder Partners:
    Ricardo Tosto and Zanon Rozzanti de Paula Barros
    Website: www.tostoadv.com/en/
    LinkedIn: www.linkedin.com/company/leite-tosto-e-barros-advogados

    Firm Overview:
    Leite, Tosto e Barros Advogados specialises in business law and provides comprehensive legal support to companies in a great variety of sectors. The firm, headquartered in São Paulo, has one of Brazil’s largest dispute resolution practices, including arbitration as well as administrative and judicial litigation. It maintains a very close and interactive relationship with its clients to ensure that its work is effective in achieving their business objectives.

    Its team of very experienced and specialised professionals holds graduate and postgraduate degrees from renowned national and international universities, is listed among the top experts in the country in various Brazilian and global legal rankings, and contributes to the evolution of law through the publication of legal articles in leading local media, as well as through lectures in conferences and seminars all over the globe.

    Main Areas of Practice:

    • Dispute Resolution: Litigation
    • Dispute Resolution: Arbitration
    • Restructuring & Insolvency
    • Labour & Employment
    • Tax
    • Energy & Natural Resources: Power
    • Public Law
    • Corporate & M&A

    Practice Areas:
    Aviation, environment, banking and finances, strategic litigation in higher courts, education, real state, regulatory agencies, anti-corruption and administrative, improbity, complex contracts and negotiations, politics and election, mergers and acquisitions, industry and manufacturing, agrobusiness, arbitration, consumer, digital and methods of payment, energy and natural resources, management of crisis, infrastructure, food and beverages, automotive, litigation and conflict resolution, economics and competition, bankruptcy and reorganisation, management of legal and arbitration assets and credit rights, media and entertainment, mining, chemistry, sanitation and health, technology and innovation, tax, corporate crimes and investigation, restructuring of debts and credits, insurance, telecommunication, retail and consumption, private equity and venture capital, state relations, corporate, labour and social security, public and administrative, unions relations, startups, transportation and logistics.

    Headquarters:

    São Paulo

    Rua Dr. Renato Paes de Barros, 1017, 5º andar
    CEP: 04530-001
    São Paulo/SP – Brasil

    Tel: + 55 11 3847-3939

Ranked Offices at Leite, Tosto e Barros Advogados

Provided by Leite, Tosto e Barros Advogados

Brazil - Head office

Sao Paulo

Dr Renato Paes de Barros 1.017 5º andar Itaim Bibi , São Paulo - SP, Sao Paulo, Brazil, 04530-001, São Paulo - SP

Ranked Departments at Leite, Tosto e Barros Advogados (2)

Brazil

Ranked Individuals at Leite, Tosto e Barros Advogados (1)

Brazil

  • Profile image of Paulo Guilherme de Mendonça Lopes
    Paulo Guilherme de Mendonça Lopes

    Dispute Resolution: Litigation: Highly Regarded

    View profile

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