Firm Profile > Siqueira Castro – Advogados > Sao Paulo, Brazil

Siqueira Castro – Advogados
04533-010 SÃO PAULO, SP

Electricity Tier 1

In a headline market move, early 2019 saw Siqueira Castro – Advogados absorb leading Sao Paulo-based energy specialists Advocacia Waltenberg. The former managing partner of the acquired boutique, David Waltenberg, now leads the combined energy practice group, which is spread between the national firm’s Sao Paulo and Rio de Janeiro offices. In addition to Waltenberg’s regulatory prowess, the wider firm also brings to bear significant expertise in administrative litigation, licensing, environmental issues and project development. Energy and environmental specialist Simone Paschoal Nogueira is also recommended.

Public law Tier 2

Major public and private companies turn to Siqueira Castro – Advogados for assistance in public bids and administrative proceedings. Public law has been a focal area for the firm for several decades, and the team combines knowledge of administrative, regulatory, environmental and corporate law. Carlos Roberto Siqueira Castro is a well-known figure in the market. In internal developments, Renata de Abreu Martins and Rodrigo Alexander Calazans Macedo were promoted to partner in 2018, while Fernando Villela de Andrade Vianna joined Vella Pugliese Buosi e Guidoni Advogados in 2019.

Environment Tier 3

Siqueira Castro – Advogados is a firm with unparalleled reach across Brazil. Contentious issues are a particular focus. For example, the group is representing AES Brasil in several cases concerning irregular occupations on environmentally protected areas surrounding the hydroelectric power plants and concerning vegetation suppression around transmissions energy lines. BASF, Bunge Alimentos and Cosan Logística are also clients. Simone Paschoal Nogueira and Marina Vieira Freire Colósio are the two partners on the team following public law expert Renato Otto Kloss' departure to Vella Pugliese Buosi e Guidoni Advogados in February 2019.

Insurance Tier 3

Siqueira Castro – Advogados excels in health and aviation insurance, and is particularly active in insurance-related litigation. In a recent highlight, practice co-heads Fabio Coutinho Kurtz and André Frossard Albuquerque acted for Medial Saúde in several cases before Brazilian courts and administrative entities. Alexandre Wider, whose broad practice includes insurance and reinsurance, was promoted to partner in 2018.

Intellectual property Tier 3

Eduardo Ribeiro Augusto and Márcio Costa de Menezes e Gonçalves lead Siqueira Castro – Advogados' 'reliable and professional' IP team, which handles mostly IP prosecution and litigation. Examples are the monitoring of illegal importation of counterfeit products on behalf of Globosat, and representing Peixe Urbano in trade mark litigation.

Labour and employment Tier 3

With a large and well-qualified team, Siqueira Castro – Advogados has the size and experience to handle a high number of labour disputes. André de Souza Santos joined from Pipek Penteado e Paes Manso Advogados in 2018; he and Otavio Pinto e Silva acted for a construction company in a dispute brought by a high-level employee. Manuela Tavares co-heads the team.

Bankruptcy and restructuring Tier 4

Siqueira Castro – Advogados has a broad practice that spans restructurings, renegotiation of debt and credit recovery, with experience acting for both debtors and creditors. In one major case, André Gondinho and Guilherme Dantas are acting as one of the main external counsels to Avianca in the company’s judicial reorganisation. Recent internal developments included the promotion of Alexandre Wider and Marina Magalhães Gomes Ramacciotti to partner.

Competition and antitrust Tier 4

Recommended firm Siqueira Castro – Advogados acts for individuals and companies in cartel investigations before CADE. Competition and criminal law expert João Daniel Rassi is recommended. Marina de Araújo Lopes, whose practice encompasses competition, compliance and regulatory law, made partner in 2018. Guilherme Dantas and Heitor Faro de Castro co-head the department.

Hydrocarbons Tier 4

Siqueira Castro – Advogados handles a mix of contentious, environmental and regulatory work for key industry names, including Petrobras Transporte, National Oilwell Varco and White Martins Gases Industriais. Among its recent cases, it represented Petrobras Transporte in a $10m recovery claim against Techno Layer Tecnologia Em Revestimento. Carlos Roberto Siqueira Castro and Rodrigo Alexander Calazans Macedo are the key contacts.

International trade and customs Tier 4

Siqueira Castro – Advogados combines tax, customs and intellectual property to advise clients on importation of goods, tax classification and counterfeiting issues. Bianca Xavier in Rio de Janeiro and São Paulo-based Márcio Costa de Menezes e Gonçalves are key contacts.

Mining Tier 4

Major national and multinational mining companies turn to Siqueira Castro – Advogados for support on a wide range of regulatory and transactional issues. The litigation powerhouse is particularly well positioned to advise on contentious environmental and administrative law cases, but it also handles non-contentious issues, including due diligence procedures and contract negotiations. The firm routinely represents Vale in regulatory and administrative proceedings and it also counts Companhia Riograndense de Valorização de Resíduos and Mineração Buritirama as key clients. Simone Paschoal Nogueira and Carlos Roberto Siqueira Castro co-head the department.

Projects and infrastructure Tier 4

Siqueira Castro – Advogados acts for both national and international companies on a broad range of infrastructure projects. For example, it assisted Fraport with airport concession bidding rounds and advised Construtora Passarelli on administrative contracts. Fernando Villela de Andrade Vianna joined Vella Pugliese Buosi e Guidoni Advogados.

Real estate Tier 4

Siqueira Castro – Advogados combines real estate, litigation, environment, tax and project finance expertise. In contentious work, Daniela Soares Domingues and Alexandre Wider acted for a financial services company in a breach of contract case involving the sale and purchase of real estate. Andre Frossard Albuquerque handles infrastructure and property disputes.

Tax Tier 4

The 'experienced' tax partners at Siqueira Castro – Advogados are split between multiple offices. Clients include well-known companies in the agribusiness, financial services and tech sectors, among others. I Jen Huang and Gabriela Miziara Jajah made partner in 2018. Maucir Fregonesi Junior, Bianca Ramos Xavier and Marluzi Andrea Costa Barros are the practice heads.

Corporate and M&A Tier 5

Siqueira Castro – Advogados distinguishes itself through its extensive office network across Brazil. The sizeable team is also equipped to handle cross-border mandates. In addition to its transactional workload, the team regularly advises clients on corporate and contractual matters, and its full-service offering allows it to provide comprehensive coverage of other areas, including competition and tax. For example, Carlos Fernando Siqueira Castro and Fábio Korenblum advised an engineering company in a range of business law issues, including environmental and regulatory matters. Elsewhere, a cross-departmental team that included corporate partner Sérgio Ricardo Fogolin assisted a public-listed company with the acquisition of two companies. Marina Magalhães Gomes Ramacciotti made partner in 2019. Guilherme Dantas is a key contact.

Dispute resolution (including White-collar crime) Tier 5

'A huge law firm with presence in various states of Brazil', Siqueira Castro – Advogados has 'great knowledge of local markets and players'. It provides a comprehensive service in dispute resolution, covering litigation, arbitration and corporate crime. In recent work, a team led by Carlos Roberto Siqueira Castro and Daniela Soares Domingues acted for Vecttor in a class action suit claiming damages for environmental and ecological damage. Litigator Fabio Coutinho Kurtz has strong experience in consumer and aeronautical law; and João Daniel Rassi is a highly-rated criminal lawyer.

SiqueiraCastro can proudly and confidently say that in its 70-year history, it has played a fundamental role in the evolution of the legal sector in Brazil. Among its clients are the leading companies in their sectors, and they work incessantly to develop the country. This entrepreneurship and purpose motivates the firm. More than specialists in the law, the firm understands all the needs of businesses. For this reason, it is a pioneer in offering full solutions.

Areas of practice

Administrative, regulatory, infrastructure law and PPPs, agribusiness, aviation, basic sanitation, biodiversity, biotechnology, business crimes, capital market, case control, civil law and contracts, communications and telecommunications, compliance, integrity and corporate ethics programs, constitutional law and governmental relations, consumer relations, copyrights, corporate, debt collection, digital law and data protection, economic and competition law, electoral law, electric power sector, environmental law, financial and banking law, fintechs, foreign capital, foreign trade and commercial defense, forest investments, health and life sciences, health and sanitary surveillance, insurance and reinsurance, intellectual property, international transactions and contracts, labour law, legal auditing, maritime law, media, marketing and advertising law, mergers and acquisitions, mining law, oil and gas, plea bargains, privatizations and concessions, public law, real estate transactions, recovery of companies and bankruptcies, recurring litigation, renewable energy, retail and electronic commerce, social security law, software, startups, strategic litigation and arbitration, successions, estate planning and related matters, tax law, third sector, tourism, sports and entertainment, and transportation.

International work

To support the construction of the firm’s global market vision, it is a member of ADVOC, a global network of independent law firms. Present in more than 90 countries, it is one of the most traditional and respected networks in the legal profession, gathering some 12,000 lawyers in the main cities of all continents. In Brazil, the network acts only through SiqueiraCastro. The firm founded ADVOC in Latin America and coordinate all its activities in the region. Besides this, to enable response to the specific demands of its clients, over the years the firm has developed strategic partnerships with some of the most important law firms in key jurisdictions for the interests of Brazil and its leading companies. Below the firm highlights its presence in other countries: China, France and Francophone Africa, Portugal, Angola and Mozambique.


The impact of SiqueiraCastro in the legal and business worlds, besides being known by clients and by the market in general, is regularly recognised by specialised publications.
The following deserve special mention:
■ One of the best law firms in Brazil in 15 practice areas and 20 partners elected among the best lawyers in Brazil (Chambers Latin America – 2018)
■ One of the best law firms in Brazil in 12 practice areas and 24 partners elected among the best lawyers in Brazil (Análise Advocacia 500 – 2017)
■ One of the best law firms in the world in eight practice areas and six partners elected among the best lawyers in the world (Chambers Global -2017)
■ One of the best law firms in Brazil in 20 practice areas and 38 partners elected among the best lawyers in Brazil (The Legal 500 Latin America – 2017)
■ One of the best companies to work in Brazil in 2011/12/13/14/15/16/17 (Great Place to Work)
■ Largest law firm in Latin America (Latin Lawyer 250 – Edition 2017)
■ Pro Bono Firm of the Year (Latin Lawyer 2007)
■ Elected by Chambers as the best law firm of Latin America in the year of 2015 in practices of Social Responsibility and Pro Bono (Chambers Latin America)
■ Pro Bono Leading Light (Latin Lawyer 2012/13/14/15/16/17)
■ One of the best law firms in Brazil in the areas of banking and capital markets, mergers and acquisitions and private equity and project finance (IFLR 1000 – 2017)
■ One of the best law firms in arbitration, civil and commercial litigation, white-collar crime, mergers and acquisitions, competition/ antitrust, corporate tax, patent and intellectual property, labour litigation and product liability (Leaders League 2017)
■ One of the best law firms in Brazil in the areas of corporate, project finance and project development (IFLR 1000 – energy and infrastructure – Edition 2017)
■ Five partners elected among the best lawyers in Brazil (LACCA Approved 2017)

Social Responsibility

Besides the support given to clients’ business activities, SiqueiraCastro pay special attention to initiatives that have a positive impact on society. Support social assistance actions and programs to improve the quality of life of needy and disabled people. And the firm also provides free legal services (pro bono) on a permanent basis to charitable and philanthropic institutions in various Brazilian states. SiqueiraCastro have a Pro Bono Committee, organically implemented since the 1990s to support the firm’s efforts throughout Brazil. Besides this, concentrate the social responsibility and pro bono activities through the Maria Clara Institute, which pays for all initiatives in the country with funds from SiqueiraCastro.


The firm assists more than 3,000 national and international clients that are active in different sectors, including banking, pharmaceutical, petrochemical, communication, automotive, construction, shipping, insurance, oil and gas, energy, IT, entertainment, aviation and transportation.

Department Name Email Telephone
Main partners Carlos Roberto Siqueira Castro
Main partners Carlos Fernando Siqueira Castro
Main partners Fábio Coutinho Kurtz
Main partners Heitor Faro de Castro
Other fee-earners : 832
Total staff : 2,319
Contacts : 80