Brazil Guide 2026 : Brazil
Ranked Individuals
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COSRO fields a team of seasoned oil and gas lawyers with strong credentials in regulatory and contractual matters. The team has a recognised expertise in work related to decarbonisation and natural gas storage.
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COSRO advised ATGás on regulatory and transactional matters concerning Brazil’s market opening under the New Gas Law (Law No. 14,134/2021).
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COSRO's main distinguishing feature is the combination of technical excellence in legal matters and a deep understanding of business strategies and the broader functioning of the market. The team demonstrates consistent mastery of complex issues, operating confidently in constantly evolving environments and markets. The firm stands out for its strategic project management capabilities, going beyond strict legal analysis to offer advice oriented towards economic viability, appropriate risk allocation and investment decision-making.
What truly sets COSRO apart is the combination of technical rigour with an extremely pragmatic commercial vision. The team doesn't limit itself to a cold interpretation of the law; they are able to anticipate trends and offer advice geared towards risk allocation in long-term investments. Their expertise in the oil and gas agenda puts the firm in a leading position in Brazil.
The team stands out for its agility, technical knowledge, business-oriented approach, and commitment to our needs. COSRO has a team of experienced lawyers taking a problem-solving approach.
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Alexandre Bittencourt Calmon is recognised for his work in the oil and gas arena, where he regularly assists clients with complex transactional and regulatory issues.
Alexandre Calmon is one of the most complete and strategic professionals in the Brazilian market. Calmon possesses a rare combination of technical depth and business acumen, which makes him a critical facilitator in highly complex projects. He doesn't just solve legal problems; he makes investments viable.
He stands out for his high level of seniority, deep knowledge of the energy sector, and strong ability to translate complex legal issues into practical business guidance. Alexandre Calmon acts with technical expertise, pragmatism and strategic vision, serving as a point of reference in regulatory and transactional discussions. His direct involvement adds credibility, efficiency and quality to the firm's deliverables.
Alexandre's work is marked by a deep understanding of complex regulatory and contractual issues, especially at the interface between business strategies. Regarding the level of complexity, Alexandre demonstrates an exceptional ability to handle highly sophisticated matters involving multiple stakeholders, excellent communication with government agents, institutional sensitivity and significant impacts on investment decisions and long-term planning.
Marcelo Frazão Costa Rodrigues is often seen advising oil and gas clients on contractual and regulatory mandates, including those related to shipping matters.
Marcelo stands out for his solid technical background, meticulous approach and high level of reliability in handling tasks. He works in an organised, consistent and committed manner, prioritising quality deliverables and demonstrating strong execution skills and alignment with client needs. He is a professional who inspires confidence and contributes positively to efficient teamwork.
Marcelo Frazão distinguishes himself through a solid legal background and consistent technical rigour, specialising in maritime law applied to the oil and gas industry. His contribution is marked by well-structured analyses and attention to the regulatory and contractual aspects. He demonstrates confidence in handling relevant issues related to offshore operations, chartering, maritime liabilities and regulatory interfaces. His work contributes to the proper identification and mitigation of legal risks in sensitive operational and regulatory contexts.
Marcelo is outstanding in his field. Both as a relationship partner and in delivering the work, he is exceptional.
Patricia Winter is an oil and gas associate able to provide clients with advice on regulatory and contractual matters in this sector.
Patricia Winter is always there when you need her and provides extremely commercial and practical advice.
Professional demeanor, attention to detail and strong commitment to quality work. Patricia Winter acts in an organised, approachable and collaborative manner, contributing to the efficient management of tasks and good alignment with the internal team. Her performance inspires confidence and adds consistency to the firm's deliverables.
Patricia is driven and also thinks strategically.
Energy & Natural Resources: Oil & Gas
Energy & Natural Resources: Oil & Gas
Energy & Natural Resources: Oil & Gas
Global 2026
Practice area: Energy & Natural Resources: Oil & Gas
Location: Brazil
View department profile for Global 2026
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