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IGOR CUNHA ARANTES CASTRO
IGOR CUNHA ARANTES CASTRO

Sócio

igor.castro@mac-advogados.com

igor.castro@mac-advogados.com

COMMERCIAL CONTRACTS | DISPUTE RESOLUTION | ARBITRATION | DISPUTE RESOLUTION | LITIGATION

COMMERCIAL CONTRACTS | DISPUTE RESOLUTION | ARBITRATION | DISPUTE RESOLUTION | LITIGATION

COMMERCIAL CONTRACTS | DISPUTE RESOLUTION | ARBITRATION | DISPUTE RESOLUTION | LITIGATION

With over 15 years of experience, Igor specializes in complex litigation and high-profile commercial arbitrations, including disputes in construction, M&A, corporate conflicts, and contractual matters.

Igor represents clients in domestic and international arbitrations under the rules of the world’s leading arbitral institutions, such as the International Centre for Dispute Resolution (ICDR), the International Court of Arbitration of the International Chamber of Commerce (ICC), the Brazil-Canada Chamber of Commerce (CCBC), the Amcham-Brazil Arbitration Center, and the Center for Mediation and Arbitration of FIESP. His work covers arbitrations conducted in both Portuguese and English, involving Brazilian and foreign laws.

He also has extensive experience in Brazilian courts, including higher courts, advising clients from various strategic sectors, such as banking, hospitality, private equity, construction, mining, oil and gas, steel, energy, telecommunications, pharmaceutical industry, and entertainment.

During his time as a foreign attorney at Quinn Emanuel Urquhart & Sullivan in New York (2022-2023), he worked on high-complexity international arbitrations and commercial disputes. His experience includes proceedings under the Federal Rules of Civil Procedure, evidence production procedures based on Section 1782, and securities class actions, contributing to successful strategies in litigation and cross-border arbitrations.

With bar admissions in both Brazil and New York and international experience, Igor is frequently sought after for strategic, highly complex, and international disputes, where tactical vision, technical expertise, and delivering concrete results are crucial.

Beyond his legal practice, he regularly publishes articles in the media and academia, such as "Arbitration in 2 Worlds - Bridging Brazil and Portugal," included in the book Arbitragem 2 Mundos: Diálogos Brasil e Portugal.

Igor is fluent in English and proficient in Spanish and French.

Bar Admissions

  • New York State Bar – New York

  • Brazilian Bar Association (OAB) – São Paulo

Professional Associations

  • Brazilian Arbitration Committee (CBAr)

  • Young ICCA

  • ICC Young Arbitrators Forum (YAF)

  • New Generation CAM-CCBC

  • INOVARB – CAM-AMCHAM (Director)

Education

  • Master of Laws (LL.M.), International Business Regulation, Litigation and Arbitration, New York University, New York (2022) (Dean’s Award)

  • Short Course: Finance for Non-Financials, Saint Paul Business School, 2020

  • Postgraduate Diploma in Civil Procedure, Fundação Getúlio Vargas (FGV), São Paulo, 2017

  • Bachelor of Laws (LL.B.), University of São Paulo (USP)

  • Erasmus Programme, Université de Nantes, France, 

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STRATEGIC

PARTNERSHIP

for High-Stakes

Cases

AV. DAS NAÇÕES UNIDAS
11.633, 11TH FLOOR
BROOKLIN NOVO, SÃO PAULO, SP
04533-085

© MAC Advogados 2025. All rights reserved.

#brandingbybolden

STRATEGIC

PARTNERSHIP

for High-Stakes

Cases

AV. DAS NAÇÕES UNIDAS
11.633, 11TH FLOOR
BROOKLIN NOVO, SÃO PAULO, SP
04533-085

© MAC Advogados 2025. All rights reserved.

#brandingbybolden

STRATEGIC

PARTNERSHIP

for High-Stakes

Cases

AV. DAS NAÇÕES UNIDAS
11.633, 11TH FLOOR
BROOKLIN NOVO, SÃO PAULO, SP
04533-085

© MAC Advogados 2025. All rights reserved.

#brandingbybolden