Who we are

Ayres Westin Advogados has been operating since 2012 with a clear purpose to go beyond traditional legal practice and act as true business consultants, offering our clients complete legal and business solutions for complex matters, provided by a highly specialized team that combines academic excellence and technical knowledge.
Being a firm with unparalleled expertise recognized by leading legal publications in the fields of Tax Law, Mediation, Arbitration, and Civil Litigation, and comprehensive practice in Corporate Law, our work goes far beyond providing simple advisory and planning. We bring together in-depth knowledge in the areas of Corporate Law, Mergers and Acquisitions, Capital Market, Regulatory, International Commerce, among others, to offer true business consultancy to our clients.
With a service model focused on fully supporting our clients, we act as a true strategic partner in building and enabling business opportunities. We are committed to getting to know our clients in depth, understanding their operations, and adapting our services to the needs and evolution of each sector. This way, we can offer end-to-end solutions that go beyond the legal aspect.
Based on the vision of our partners, we offer highly specialized and customized solutions, combined with the structure and technology needed to meet the needs of the largest Brazilian companies and global companies operating in the country.
Ayres Westin Advogados we seek to always be ahead of the trends in the markets where our clients operate. On a daily basis, our team monitors court case law, legislative developments and the actions of government agencies and bodies in Brazil and abroad, developing a deep understanding of the global business environment.
This is because we know that this expertise is essential for seeing opportunities and outlining the most efficient strategies for each case. In a decade-long practice, we have developed unique knowledge of the particularities and challenges of doing business in Brazil and cross-border operations, allowing us to offer solid solutions to complex issues. We go beyond legal services to act as true business consultants for our clients.
Drawing on the experience of our partners, we combine Tax Law, Corporate Law and Mergers and Acquisitions, Litigation, and Arbitration and Mediation, to serve the interests of our clients. Our practice encompasses tax efficiency projects, financial restructuring, mergers and acquisitions, structuring of operations in the national and international capital markets, and competition and regulatory issues. In the litigation field, we have extensive experience in administrative and judicial litigation, throughout the national territory.
The firm’s practice also relies on the support of our specialized teams in the areas of International Trade, Competition, Consumer, Regulatory, Capital Markets, and Labor, ensuring complete and integrated action.
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Our firm and professionals have been consistently ranked among leading specialists by Chambers and Partners since 2020. |
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The Legal 500, a prestigious international ranking, has recognized us as one of Brazil’s leading law firms since 2013. |
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The renowned Latin Lawyer 250 directory has distinguished our firm as one of Brazil’s premier legal practices. |
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Leaders League Brazil acknowledges our firm as one of the top-tier law firms in the Brazilian market. |
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The LACCA Approved survey has highlighted our partners with this prestigious recognition from the Latin American Corporate Counsel Association, which annually honors professionals most admired by in-house counsel at major companies throughout Latin America. |
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Since 2017, we have maintained a strong presence in the international ITR World Tax directory as one of Brazil’s market-leading firms. |
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Best Lawyers Brazil has consistently recognized the excellence of our professionals since 2020. |
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Since 2012, our firm has been featured among Brazil’s most admired practices by Análise Advocacia, the country’s premier legal market ranking. |
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We have been prominently featured in Análise Advocacia Regional as one of São Paulo’s top legal teams since 2021. |
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Our firm stands out in the Análise Advocacia Mulher ranking since 2025. |
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Análise Advocacia Diversidade e Inclusão We are proud to be cited in Análise Advocacia’s Diversity and Inclusion publication, which highlights firms implementing effective internal D&I practices. |