Marielle Brito Law Firm

The Leading Authority in Family Law and International Family Law in Brazil.

Boutique, strategic, and high-standard legal practice. We deliver efficient and humanized legal solutions for clients in Brazil and abroad.

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Dr. Marielle Brito

Global Practice

Brazil & Worldwide

Dr. Marielle Brito at her office
Boutique Practice

About Dr. Marielle Brito

At Màríelle Brito Law Firm, every case is handled with unique attention. We operate with strategy, empathy, and high technical standards to deliver efficient, humanized legal solutions for clients both in Brazil and abroad.

Our firm is recognized for its boutique practice: we personally oversee every case and client, prioritizing quality, dedication, and results.

Signature Dr. Marielle Brito
Our Specializations

Practice Areas

Family Law & Successions

Strategic practice to protect family bonds and ensure secure, conflict-free wealth distribution.

International Law

Handling cases with international connections, including divorces, probate, and foreign judgments.

Business & Asset Protection

Structuring businesses and families with a focus on asset shielding and succession planning.

Citizenship & Immigration

Full advisory services for those seeking European citizenship, visas, or legal relocation.

Real Estate Law

Legal guidance for acquisitions, land regularization, and domestic or international real estate contracts.

Tax Law

We help reduce tax risks and costs through planning and defense in audits and enforcement actions.

Social Security Law

Specialized practice in pensions, revisions, and protection of your benefits with agility.

Banking Law

Defense against financial abuse, unlawful interest, and strategic debt renegotiation.

Health Law

Strong legal defense against denials by health insurance providers and access to medical treatments.

Corporate Law

Comprehensive legal advisory for the corporate world, ensuring security in contracts and negotiations.

Recognized Excellence

Why choose Màríelle Brito Law Firm?

At MSB Advocacia, every client is served with strategy, proximity, and technical excellence. Our practice is personalized, aimed at practical and effective legal solutions – both in Brazil and abroad.

We combine academic knowledge, international experience, and active listening to transform legal challenges into secure, resolutive decisions for our clients.

10.000+
Clients served in Brazil and abroad
99%
Success rate in strategic cases
20+
Years of experience in Brazil and abroad
40+
Countries served
10.000+
Legal students taught
Dr. Marielle Brito

Dr. Marielle Brito

Attorney admitted to the Brazilian Bar (OAB/DF 26.049), with 19 years of experience (since 2007) and over 10,000 cases handled across more than 40 countries. Fluent in Portuguese, English, and Spanish.

Frequently invited by major television networks, newspapers, and magazines as a legal expert, with over 50 media appearances.

Specialist in International Law, probate, and succession planning with asset holding companies, achieving a landmark homologation ruling in the Superior Court of Justice (STJ) in just 2 months.

  • Visiting researcher at the University of Lisbon (ULisboa) and the University of Cambridge
  • Master's degree in Civil and International Law from the University of Lisbon (ULisboa)
  • Post-graduate degree in Law with 6 specializations from Unisul
  • Law degree from the Federal District University Center (UDF)

Author of the legal book "The Process of Inventory and Division". Contributor to numerous legal publications and her own specialized blog.

Former Vice-President of the Foreign Trade Commission at OAB/Barra da Tijuca – RJ (2019–2021). Former Secretary-General of the International Law Commission at OAB/DF (2016–2018).

Founder of Màríelle Brito Law Firm, with a distinguished practice in Brazil and abroad. Internationally recognized consultant and keynote speaker.

Over 100,000 followers across social media platforms.

Professor of Family Law, Succession Law, International Family Law, and Legal Entrepreneurship, with 7 online courses and over 100 hours of content on Hotmart.

Training & Mentorship

Courses and Books

Book Cover Book Launch
Published Work

The Probate and Asset Division Process

In this work, Dr. Marielle dos Santos Brito—lawyer and researcher at the University of Lisbon—presents a practical and theoretical guide to the Probate and Asset Division process, in accordance with the Brazilian Civil Procedure Code.

Drawing on 16 years of expertise, the author analyzes key points such as venue/jurisdiction, legal standing, advance use of estate assets, and practical judicial and extrajudicial procedures.

Table of Contents:

  • 1. The Probate Process
  • 8. Indivisible Assets
  • 2. Deadlines
  • 9. Collation
  • 3. Legal Standing
  • 10. Jurisdiction
  • 4. Executor/Administrator
  • 11. Judicial Process
  • 5. Executor's Duties
  • 12. Extrajudicial Process
  • 6. Citation of Heirs
  • 13. Documentation
  • 7. Evidence & Asset Use
  • 14. References
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Keynote Speaker

National & International
Speaker

50+

Lectures across Brazil
and Worldwide

OAB Legal Congress
Brazil • OAB

Speaker at the OAB Legal Congress

World Lawyers Forum Amsterdam
Netherlands • Amsterdam

Speaker at the World Lawyers Forum

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Testimonials