
Covering the full spectrum of environmental law matters, COSRO is well placed to advise on environmental licensing, climate strategy, contaminated-site remediation, ESG due diligence, and judicial proceedings. Vilmar Luiz Graça Gonçalves focuses on crisis management and judicial and administrative proceedings, regularly advising clients across agribusiness, sanitation, and oil and gas. Nathália Almeida Aleixo advises on environmental licensing and matters concerning contamination, biodiversity, and carbon markets.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- Vilmar Gonçalves and Nathália Aleixo stand out for their deep knowledge in environmental law, the quality of their performances, and their ability to address complex topics.
- Excellent technical knowledge, prompt service, and understanding of the client's business.
- The environmental team led by Vilmar has been impeccable, especially in a process that is extremely sensitive and strategic for the company. The level of support, monitoring, and updates is very high, with a highly diligent and technically skilled team. The firm demonstrates profound regulatory knowledge and an excellent ability to handle complex issues, including situations that require quick responses, strategic alignment, and constant interaction with different agencies and stakeholders. In addition to supporting the process in question, the team also works very closely in consulting on new operations and projects, providing legal certainty, practical vision, and viable solutions from an operational and regulatory standpoint.
- Deep technical knowledge. Strategic vision and partner involvement in every project.
- COSRO stands out for its combination of technical excellence, close client relationships, and a strategic vision of legal matters. The team demonstrates profound legal knowledge coupled with a practical, solution-oriented approach, understanding not only the legal aspects but also the operational and commercial context of clients. The firm differentiates itself through the high availability of its partners, speed of response, and ability to act collaboratively and efficiently in complex and multidisciplinary matters. The quality of service provided is consistent, with high technical rigor, clear communication, and a strong commitment to deadlines and results. In the context of the national legal market, COSRO stands out for its combination of technical sophistication with close and personalized service, something not always found in larger firms. The team also demonstrates a great capacity to adapt to the specific needs of clients and strong institutional and business sensitivity. The firm has also demonstrated a concern for innovation and efficiency, including greater technological integration, organization of workflows, more transparent communication, and the use of tools that increase agility and predictability in handling matters. Collaboration between teams and coordinated action by professionals are particularly distinguishing factors.
- Partner Vilmar Gonçalves stands out for his technical excellence, strategic vision, and high commitment to clients. He demonstrates profound legal knowledge, great analytical capacity, and strong ability in handling complex matters, always with a practical and problem-solving approach. In addition to his technical quality, he distinguishes himself through his availability, close client relationships, and ability to convey security and confidence in sensitive or highly complex situations. The associated team also stands out for its technical competence, organization, responsiveness, and high level of dedication to the matters handled. The work is developed in an integrated and efficient manner, ensuring close monitoring and clear communication throughout the entire process. In particular, I would recommend partner Vilmar Gonçalves and the team that directly advises him, for their combination of legal excellence, strategic capacity, availability, and high standard of service.
- We are very pleased with the work of the COSRO team in the environmental field. We appreciate the ongoing partnership, the high technical quality, the meticulous follow-up of cases, and the cordiality.
- Vilmar Gonçalves - excellent partner. Nathalia Almeida - high technical quality.
- The team involved in this area demonstrates expertise and a willingness to act strategically.
Key clients
- Águas do Rio
- Ambev S.A.
- Soenergy - Sistemas Internacionais de Energia S.A.
- Porto do Pecém Geração de Energia S.A.
- Nk 195 Empreendimentos e Participações S.A.
- Trident Energy do Brasil Ltda.
- Prolagos S.A. – Concessionária de Serviços Públicos de Água e Esgoto
- Sinova Inovações Agrícolas S.A.
- Amaggi Louis Dreyfus Zen-Noh Graos S.A. (Alz Grãos)
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head
Vilmar Luiz Graça Gonçalves
Other key lawyers
Nathália Almeida Aleixo
