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  • Porto Alegre

  • São Paulo

William Carneiro Monteiro Nitschke

Partner

+55 (11) 3025-2209

gmn@tozzinifreire.com.br

Practice areas:

Arbitration

Litigation

Mediation

"

Guilherme Carneiro Monteiro Nitschke is noted for his technical knowledge and is the most qualified professional in the firm for this area, providing consistently strong client service.

Professional experience

Partner at TozziniFreire in the Litigation and Arbitration areas, Guilherme works on commercial and investment arbitration proceedings before several different institutions and in cases at all levels of the Judiciary Branch in Brazil. His expertise also includes work in contractual consulting, negotiation of complex contracts, and civil litigation in M&A transactions. In 2015, he worked as a foreign associate at Dechert (Paris) LLP in the international arbitration team. Guilherme is a member of the arbitrator lists of important Brazilian arbitration institutions (CAM/CCBC, AMCHAM, CAMARB, ARBITAC, CEMAAC, CAMCA, CAF, CMAA). He attended the XNUMXth Edition of the IADC Trial Academy at Stanford Law School, and the ICC Arbitration Advanced Academy for Latin America.

Education

• Doctorate degree in Civil Law from Law School of USP (Universidade de São Paulo), 2018 (doctoral thesis recognized by the Outstanding Award for the best one in Civil Law at USP, in 2018).  

• Took the Trial Academy program organized by IADC (International Association of Defense Counsel) from Stanford University, USA, 2018.  

• LL.M. degree from UFRGS (Universidade Federal do Rio Grande do Sul), 2011.   

• Graduate of the Law School of PUC-RS (Pontifícia Universidade Católica do Rio Grande do Sul), 2005.

Languages
  • English
  • Spanish
  • Italian
  • French
Rankings and Awards

Guilherme is recommended by the legal guides Chambers Global, Chambers Brazil, Latin Lawyer XNUMX, Análise Advocacia, Análise Advocacia Regional, and Legal XNUMX, recognized by the latter as a Next Generation Partner. He is also recognized as a "rising arbitrator" by the Rising Arbitrators Initiative.

Additional activities

• Vice President of CBAr (Brazilian Arbitration Committee) for the 2024-2027 term, where he has been a Director since 2018.

• Executive Secretary of the ICC Brazil Arbitration and Mediation Commission (International Chamber of Commerce) from 2021 to 2024.

· Member of the ICC Global Commission on Arbitration and ADR.

• Member of the Deliberative Council of IBDiC - Brazilian Institute of Construction Law (2024-2027).

· Director of CAF (Arbitration Chamber of FEDERASUL) and the Arbitration and Mediation Center of OAB/RS.

• Member of the Clube dos Arbitralistas Lusófonos (CAL), the Latin American Arbitration Association (ALARB), and various arbitration and private law institutions.

· Member of the Study Commission on the Draft Reform of the Civil Code, of IASP (São Paulo Lawyers Institute).

• Member of the Special Study Committee on the Draft Reform of the Civil Code of the São Paulo Lawyers Institute (IASP).

• Professor in postgraduate courses in Private Law and Arbitration..

Publications

• Articles “Full Understanding Clause and Contractual Interpretation” and “Contractual Interpretation in the Economic Freedom Law, Three Years Later”, from the book AGIRE: Private Law in Action, Editions 1 to 100. Rio de Janeiro: Editora Processo, 2024.

• Book: Comments on the Guidelines of the Brazilian Arbitration Committee on the Duty of Disclosure of the Arbitrator (co-author). São Paulo: Brazilian Arbitration Committee, 2024.

• Article “Risk and contractual gaps: the case of gaps by express agreement of the parties”, from the book Risks in Private Law and Arbitration . São Paulo: Almedina, 2023.

• Private Law in the Law of Economic Freedom. Commentary (co-organizer). São Paulo: Almedina, 2022.

Recent Insights

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Podcasts

TozziniFreire is hosting a webinar to discuss the contractual effects of the price hike.

28/07/25
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Draft Law for the Reform of the Civil Code and the discipline of civil liability.

22/05/25
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