About Us

MF Capital is a 100% Mexican law firm

With a multidisciplinary approach, we specialize in providing legal, administrative, and strategic solutions for companies, institutions, political actors, and key economic sectors.
Our practice is designed to address matters that require not only legal expertise but also a comprehensive perspective, analytical skills, and a results-oriented strategy. We understand that each client faces unique needs, which is why we develop tailored solutions—both preventive and litigious—based on the nature of each matter.

At MF Capital, we believe that legal counsel should serve as a tool for protection, growth, and decision-making—not merely a reaction to conflicts. That is why we support our clients every step of the way, from risk prevention to the formal defense of their interests before authorities, courts, or specialized proceedings.

Mission

To provide legal, administrative, and strategic solutions with integrity, excellence, and a comprehensive approach, safeguarding our clients’ interests through high-quality professional services.

Vision

To be a leading firm nationwide, recognized for its technical expertise, strategic approach, reliability, and ability to resolve complex issues with effective results.

Our Values

Honesty

We act with integrity, transparency, and respect in everything we do.

Confidentiality

We protect our clients' information and interests with the utmost confidentiality.

Your Excellency

We strive for the highest standards of quality in legal analysis, strategy, and execution.

Commitment

We approach every case with a sense of responsibility and professionalism, prioritizing tangible results and real solutions.

Our Team

MBA Mario A. Flores

An attorney with over 20 years of experience in corporate law, with a strong track record in international, administrative, and mining law. Throughout his career, he has provided legal representation
to domestic and multinational companies, distinguishing himself through his strategic decision-making skills and comprehensive management of complex legal matters.

He has been actively involved in international litigation, defending corporate interests in diverse regulatory environments, as well as in the structuring and implementation of cross-border legal strategies. His experience includes coordinating proceedings before authorities at various levels of government and interacting with international organizations.

He also has extensive experience in due diligence processes, advising on the legal evaluation of companies, projects, and investments, particularly in the mining, industrial, and government sectors. His focus is on risk mitigation, regulatory compliance, and strengthening corporate structures.

As a founding partner and legal leader, he has built strong relationships with high-profile companies, providing comprehensive legal solutions with a preventive and strategic approach, and has established himself as a leading figure in the region’s corporate legal sector.

Dr. Natalia Guadalupe Fernández Martínez

Partner | Constitutional Litigation and Human Rights

Dr. Natalia Guadalupe Fernández Martínez is a specialist in strategic litigation in the areas of constitutional law and human rights, with extensive experience in handling and resolving complex legal matters.

His practice focuses on the design and implementation of legal strategies aimed at protecting fundamental rights, ensuring constitutional oversight, and providing legal representation in high-stakes proceedings, in both the public and private sectors.

He has extensive experience in legal consulting and litigation, having helped develop legal solutions in administrative, constitutional, and electoral matters, with a technical and strategic approach focused on results.

She holds a J.D. with a specialization in criminal law and constitutional law (
), which underscores her ability to address issues from a comprehensive perspective, combining rigorous legal analysis with a practical approach to conflict resolution.

His professional profile is characterized by technical expertise, precision in legal argumentation, and the ability to develop effective strategies in complex situations

Juan Carlos Williars

Senior Associate at MF Capital with over 20 years of experience in the practice of law, specializing in highly complex legal matters.

He has advised and represented companies and clients across various sectors, handling strategic disputes in civil, commercial, administrative, criminal, and labor matters, as well as constitutional and human rights litigation. His practice is distinguished by the development of precise, efficient, and results-oriented legal solutions.

His experience spans both the private and public sectors,
providing him with a solid understanding of the regulatory environment, government actions, and institutional dynamics, which enables him to develop highly effective legal strategies.

He has a multidisciplinary background and holds advanced degrees, which support a comprehensive approach to legal decision-making.

His current practice focuses on providing strategic advice and representation to clients who require high-level legal support, with a strict emphasis on confidentiality, precision, and the protection of clients’ interests.

Valeria Cardenas

She holds a law degree and has a strong academic background and experience in the legal and administrative fields, complemented by studies in accounting and finance. She possesses a well-rounded skill set focused on staying up to date, with the ability to integrate legal and financial considerations when handling corporate, administrative, and estate matters.

He has gained experience in immigration matters, specializing in the drafting, analysis, and review of legal documents, as well as in legal research and providing support during administrative proceedings. He is skilled in the management and control of physical and electronic files, ensuring that information is handled efficiently, systematically, and confidentially.

His education has been further enhanced by specialized studies in human rights and constitutional justice, including academic programs offered by the University of Pisa and the Supreme Court of Justice of Mexico, enabling him to apply a legal perspective grounded in the rule of law and up-to-date principles.


He is known for his strong sense of responsibility, commitment, and professiona
, as well as his attention to detail, effective communication, and ability to work collaboratively. He possesses advanced skills in legal drafting, document analysis, and the use of technology tools applied to the legal field.

MF | CAPITAL Legal  

2026