Ruben Aguirre

Alfredo heads the firm’s Labor, Social Security and Immigration practice group. He advises local and foreign clients in complex labor and employment matters, including union negotiations, planning for new and existing investments in efficient labor structures, executive transfers and terminations, social security and compensation matters, formation and implementation of pension plans, equity compensation programs, and flexible benefit plans. Alfredo also advises clients on labor matters...

Mónica Patricia Pérez Santana is a lawyer recognized by Best Lawyers in the practice area of Tax Law. Mónica Patricia practices law in Mexico City, Mexico Best Lawyers has recognized Mónica Patricia Pérez Santana since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Mónica Patricia Pérez Santana is held by other lawyers.

Law degree summa cum laude Escuela Libre de Derecho; best thesis dissertation award 2003-2004; LL.M. 2006 Columbia University School of Law, Parker School Award for Achievement in International and Comparative Law. Participated on several defences by the leading telephone and mobile companies since 1999. Since 2004 he has been an active attorney participating in complex dispute resolution in the field, including regulatory, antitrust, M&A, constitutional, administrative and commercial mat...

Hector’s practice focuses on advising multinational clients on the labour aspects of high-end M&A deals and corporate restructurings, and high stakes labour disputes. His reputation as one of the absolute leaders for employment law in Mexico has led to him retaining some of the leading names from Mexico’s insurance, financial services, retailing and consumer goods sectors as long-term clients. His clients include leading national and multinational companies and financial insti...

Sergio is a partner of the Mexican law firm Counselors International Abogados, with offices in several cities of Mexico. He holds a law degree from Universidad Panamericana Law School (JD) in Mexico City; holds an LLM Master in Law from Washington University in Saint Louis with the Dean’s Leadership Award with concentration in negotiations and dispute resolution; has obtained degrees of specialization in environmental, corporate, tax, corporate social responsibility and energy law. Has ...

José Pablo Ramos Castillo is a lawyer from Universidad Panamericana, with Honors and the highest GPA of his class. He is the founding partner of Ramos Castillo Abogados, S.C., where he has led the administrative, constitutional, and amparo litigation department since 2011. He has been a professor at Universidad Panamericana and a speaker at constitutional law and amparo seminars. He has received awards in international arbitration competitions and was recognized as Lawyer of the Year i...

The practice of Victor Manuel Frías is focused on commercial law, including competition, mergers and acquisitions, and arbitration. On the competition side, Mr. Frías has represented clients in numerous cartel investigations before the Competition Commission in different industries for over 20 years. He frequently represents clients in pre-merger filings. Mr. Frías has been ranked by different publications as one of Mexico’s premier competition attorneys. He often a...

Jose Manuel Marquez is a lawyer recognized by Best Lawyers in the practice area of Corporate and Mergers and Acquisitions Law. Jose Manuel practices law in San Pedro Garza García, Mexico Best Lawyers has recognized Jose Manuel Marquez since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jose Manuel Marquez is held by other lawyers.

Mr. Katz is a trusted advisor for banks, insurers and high profile individuals. His focus is primarily on complex litigation, focused on criminal charges. Ilan obtained his law degree from the Universidad Iberoamericana. With more than 20 years of experience as a criminal litigator, he is an expert in property, banking and public servant crimes, serving as a whistleblower and defender in local and federal jurisdiction. Among the multiple studies carried out by Katz, we would like to emphasize...

Alfonso Sepúlveda García is a lawyer recognized by Best Lawyers in the practice areas of Arbitration and Mediation, Civil Litigation, Commercial Litigation and International Arbitration. Alfonso practices law in Mexico City, Mexico Best Lawyers has recognized Alfonso Sepúlveda García since 2019. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Alfonso Sepúlv...