Team
JOÃO MARIA DE
OLIVEIRA SOUZA
FOUNDING PARTNER
JOÃO MARIA DE
Specialist in Agrarian, Environmental and Economic Law, with a recognized trajectory of legal relevance, dialogue, consideration and contribution in acts that positively impact society.
In his career, he served as Counselor of the Board of Trade of the Federal District; Federal Attorney of the Administrative Council for Economic Defense (CADE); Titular Member of the Special Bidding Commission of Caixa Econômica Federal (CEF) for the purpose of selling functional properties of the Federal Union; Representative of the OAB/DF in the Distribution of Original Jurisdiction and Appeals of the Federal Regional Court of the 1st Region (TRF/1st); National Environmental Director of the Brazilian Lawyer's Association (ABA); Member of the Commission of Notables, appointed by the OAB/DF, to monitor the work of drafting the Organic Law of the Federal District, in 1992.
At OAB / DF, he was a member of the Board of Directors from 2004 to 2006; Board member for several terms; and President of the Environment Commission.
Decorations:
Honorary Citizen of Brasilia;
Commendation of Honor to Judicial Merit granted by the Court of Justice of the Federal District and Territories (TJDFT);
Medal of Electoral Merit of the Federal District;
Title of Collaborator of the Highway Police Cause.
A lawyer for over 30 years, he founded the firm in 1998.
Fabiana de
Castro Souza
PARTNER
Fabiana de Castro Souza
Partner
Partner since 2008, she works in Public Law, notably Administrative and Regulatory.
Professional experience in law firms, Public Defender's Office, Federal Public Ministry (MPF) and Superior Court of Justice (STJ).
Her training includes an MBA in Agribusiness Management (FGV); MBA in State and Regulatory Law (FGV); Extension in International Business Law from the University of California, Irvine (FGV/UCI); Degree in Law (UniCEUB); Letters/Portuguese (UNB).
English (C2, University of Michigan); Spanish (C2, DELE).
Nominated in 3 categories of the 2023 Women's Advocacy Analysis: (1) Agricultural Specialty; (2) Economic Sector/Food, Beverages and Tobacco; and (3) Federal District.
Guilherme de
Castro Souza
PARTNER
Guilherme de Castro Souza
Partner
Partner since 2012, he works in Private Law, notably Contracts and Business Law.
Professional experience in national law firms.
His education includes being a Master's candidate in Public Law at IDP; an MBA in Foreign Trade Management and International Business from FGV; an LLM in Business Law from FGV; Finance Training from FGV; a 360º Leadership course from EASP/FGV; and a Bachelor's degree in Law from UniCEUB.
At OAB / DF, he was President of the Subcommittee on Legislative Affairs at the Legislative Chamber of the Federal District, term 2013/2015; and Vice-President of the Support Committee for Novice Lawyers of the OAB/DF, management 2013/2015.
English.
José Silvino
Filho
CONSULTANT
José Silvino Filho
Consultant
He worked at the Ministry of Agriculture, Livestock and Supply (MAPA) for more than 40 years, began his public career as a Federal Agricultural Inspector in 1975 and retired as Union Lawyer (AGU) and Legal Consultant at MAPA, after decades of recognized contribution for National Agriculture.
He was responsible for MAPA's Legal Consultancy from 1999 to 2015. He was also Legal-Institutional Coordinator of the Master Plan for the Reform of the National Agricultural Defense Policy from 1996 to 1998.
International activities:
He was a member of the Brazilian Delegations from 1998 to 2015, representing the Brazilian government (MAPA) in international forums related to agricultural issues, such as:
World Trade Organization (WTO);
MERCOSUR;
Food and Agriculture Organization (FAO);
Convention on Biological Diversity (CBD);
Cartagena Protocol on Biosafety, Southern Cone Plant Health Council (COSAVE);
The Agriculture Ministers of the Southern Agricultural Council (CAS);
Permanent Veterinary Council of the Southern Cone (CVP).
Lawyer for over 30 years, specialist in Administrative / Regulatory Law and Agricultural Law, as well as in Public Administration.
Vivian
Fróes
Strategic Legal Coordinator
Vivian Fróes
Strategic Legal Coordinator
Lawyer since 2011 with professional experience in the Attorney General's Office (AGU) and in national law firms, especially in the areas of Constitutional Law, Administrative Law, Civil Law and Intellectual Property.
Her training includes a Master’s degree, in progress, in Public Policies, Constitution and State Organization (UniCEUB) and a Post Graduation in Civil Procedural Law (OAB / UNISC).
English
LETÍCIA
RODRIGUES
CONSULTANT
Letícia Rodrigues
da Silva
Consultant
PhD in Public Policies from the Federal University of Paraná (UFPR) and Master in Toxicology Applied to Health Surveillance from the State University of Londrina (UEL), works in the area of research in public policies associated with the regulation of pesticides, GMOs, chemical substances and environmental law.
She held the position of Manager of Standardization and Assessment at the National Health Surveillance Agency (ANVISA) for 14 years, in which she was in charge of pesticide regulation, having coordinated inspection actions at manufacturing units, toxicological reassessments and elaboration of standards.
Bárbara Van
Der Broocke
Operational Legal Coordinator
Bárbara Van Der Broocke
Operational Legal Coordinator
Lawyer since 2012, with a solid career in contentious and advisory legal practice, particularly in the areas of Administrative Law, Civil Law, Contract Law, Agrarian Law, and Electoral Law.
She has worked in high-level federal government bodies and in nationally recognized law firms, accumulating experience in coordinating legal teams, strategic management of litigation portfolios, and handling sensitive cases.
Postgraduate degree in Administrative Law from Cândido Mendes University.
English.
Giovanna
santos
Lawyer
Giovanna santos
Attorney
She began her career at Oliveira Souza in 2021 through the Oli Program, standing out throughout her training and earning the position of attorney in 2025.
She has experience working with Public Administration bodies, with an emphasis on resolving conflicts related to Family Law, Neighbor Law, and Urban and Rural Land Regularization.
She is currently pursuing a postgraduate degree in Public Law at the Pontifical Catholic University of Rio Grande do Sul (PUC-RS).
Vilani Franco
Administrative supervisor