Gabriel Francisco Leonardos

Senior Partner

Languages: English, Portuguese, German

Kasznar Leonardos Advogados
Sao Paulo, SP, Brazil

Gabriel Leonardos, LLM, MBA, Masters in Law, has more than 30 years of experience in intellectual property law. Mr. Leonardos is a senior partner of the Brazilian firm Kasznar Leonardos, and is recognized by international rankings as one of the world’s leading IP practitioners. He acts in litigation before the courts; advises on licensing agreements, patents, trademarks, trade secrets, copyright and unfair competition and works as an arbiter and mediator IP and contract law.

Professional Experience

35 years of experience as lawyer in Brazil, acting in multi-jurisdiction dispute resolution, litigation before the Courts and giving legal advice to clients in Brazilian and international Intellectual Property and Tax Law.

Arbitration Experience

The WIPO Arbitration and Mediation Center appointed Gabriel F. Leonardos as the sole panelist for over 120 decisions for domain name disputes. Mr. Leonardos is also a member of the Dispute Board of ABPI in charge of rendering decision under the “” ccTLD, and in that capacity he has already rendered approximately 15 decisions.


Gabriel Leonardos is the current President of the Brazilian Association of Intellectual Property – ABPI. He is a former president of the Brazilian-German Chamber of Commerce of Rio de Janeiro (2006-2009) and current an honorary president of the Chamber; he was Vice-president of ABAPI in the terms 1996-2001 and 2006-2013; Member of the Panel of Neutrals of INTA since 2003; Published book: “Taxation of Technology Transfer” (Ed. Forense, Rio de Janeiro, 1997); International Federation of Intellectual Property Counsels – FICPI; German Association of Intellectual Property – GRUR; Consulting Board of the Brazilian Association of Financial Law – ABDF; International Fiscal Association – IFA; Board of Directors of the Center for Studies of Law Firms – CESA. Elected “2013 and 2018 Lawyer of the Year” by Best Lawyers in the category Intellectual Property, jurisdiction Rio de Janeiro; Recommended by the renowned trademark guide WTR 1000 – The World’s Leading Trademark Professionals (2012 – 2022); Recommended by the guide IAM Patent 1000 (2013 – 2022); Recommended by the guide The Legal 500 – Latin America (2012 – 2021); Recommended by IP Stars (2018 – 2022); Recommended by the guide Leaders League (2018 – 2021); Listed (Band 1) among the Brazilian IP leading lawyers by Chambers Global, Chambers Latin America and Chambers Brazil (2014 – 2022). Listed as a reference in Trademarks by WWL (2018 – 2020).

Academic Qualifications

MBA in Corporate Finance from FGV University, Rio de Janeiro (2018); Master’ Degree in Financial Law from the University of São Paulo – USP (1996); LLM (Ludwig-Maximilian University – Munich, Germany, 1989); Guest Research Fellow Max Planck Institute – Germany (1988-1989); Graduated in Law from State University of Rio de Janeiro – UERJ (1986).

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