We are a legal firm characterized by professional excellence and a human touch. We foster a culture of inclusiveness and diversity, ensuring that our team has the best conditions for professional and personal development. 

We believe in continuous feedback and self-development based on experience, collaboration, and technical and functional knowledge. We promote a high-performance, respectful cooperative environment for the fulfillment of individual, professional, and strategic objectives.

Carlos Argüelles G.

  • Partner
  • Monterrey Office

 

Carlos is a corporate lawyer with more than 20 years of experience advising national and international clients on mergers and acquisitions, divestitures, joint ventures, banking and finance, public offers and restructuring processes of private and public debt.

He earned his law degree from the Universidad de Monterrey, in Mexico and has an LLM in Corporate Law from the New York University, USA.

He is a member of the Mexican Bar and the International Bar Association.

 

 

Mergers and Acquisitions

Banking and Finance

Restructuring

Corporate

Carlos Argüelles G.

Carlos is a corporate lawyer with more than 20 years of experience advising national and international clients on mergers and acquisitions, divestitures, joint ventures, banking and finance, public offers and...

José Ramón Ayala A.

  • Partner
  • Queretaro

 

José Ramón is a corporate lawyer with more than 20 years of professional experience based in the Querétaro office- one of the country’s leading industrial and financial centers. His practice areas include M&A, public tendering, data protection, real estate and environmental law.

He has advised public and private companies in various types of transactions, including purchases and sales of companies and real estate, structuring of operations, granting of financing and guarantees, participation in public tenders called by the Mexican government, and by governments of other countries.

He earned his law degree at Universidad Iberoamericana in Mexico City, and has an LL.M. from the Georgetown University Law Center, Washington, D.C., USA.

He is a member of the Council of the Commission on Competitiveness and Regulatory Improvement of the Employers’ Commission of the Mexican Republic, Querétaro Chapter; treasurer of The Mexico Chapter of The U.S. – Mexico Bar Association (USMBA); and a member of the International Bar Association (IBA).

He is recognized by Legal 500, among others.

 

Mergers and Acquisitions

Banking and Finance

E-Commerce

Corporate

José Ramón Ayala A.

José Ramón is a corporate lawyer with more than 20 years of professional experience based in the Querétaro office- one of the country’s leading industrial and financial centers. His practice...

Carlos Brehm T.

  • Partner
  • Monterrey Office

 

Carlos has more than 14 years of professional experience in civil and commercial litigation, commercial arbitration, restructuring, alternative dispute resolution, anti-corruption and internal investigations.

He is a member of the Barra Mexicana Colegio de Abogados, Nuevo Leon Chapter and the Young ICCA.

He earned his law degree from the Universidad Iberoamericana in Mexico City, a Diploma in the new Constitutional Regulation on Human Rights and Amparo from the Escuela Libre de Derecho in Mexico, an LL.M in Business Law from the Universidad Panamericana, in Mexico City, and an Anti-Corruption Diploma from the International Chamber of Commerce Mexico/Universidad Panamericana, Mexico.

Carlos was a member of the Latin American Desk in the Washington, D.C. office of Quinn Emanuel Urquhart & Sullivan, LLP, and has participated in World Bank Group Doing Business publications.

 

Arbitration

Civil and Commercial Litigation

ADR

Insolvency Proceedings

Carlos Brehm T.

Carlos has more than 14 years of professional experience in civil and commercial litigation, commercial arbitration, restructuring, alternative dispute resolution, anti-corruption and internal investigations.  He is a member of the...

Mariano Calderón V.

  • Partner
  • Mexico City Office

 

Mariano has more than 25 years of professional experience advising national and international clients on tax matters for their operations in Mexico, and has successfully represented them in amparo, administrative and contentious judicial proceedings, involving constitutional, tax and administrative matters.

He has successfully represented clients in amparo, administrative and judicial contentious proceedings, involving constitutional, tax and administrative related issues.

He is an expert in investigations and proceedings on probable responsibility in antitrust practices, in administrative proceedings related to customs and in the representation of disagreements in government procurement.

He earned his law degree from the Universidad Nacional Autonoma de Mexico, in Mexico City and LL.M from Georgetown University Law Center, USA.

He has published several articles and been interviewed discussing issues surrounding the unconstitutionality of tax laws, amparo trials, and tax matters, in media outlets such as El Financiero, El Economista, CNN Expansión, Reforma, Alto Nivel, Manufactura, among others.

Mariano is acknowledged by Chambers and Partners, Legal 500 and Who’s Who Legal.

 

Administrative Law

Constitutional, Administrative and Fiscal Litigation

Tax

Mariano Calderón V.

Mariano has more than 25 years of professional experience advising national and international clients on tax matters for their operations in Mexico, and has successfully represented them in amparo, administrative...

Sergio Chagoya D.

  • Partner
  • Mexico City Office

 

Sergio’s practice includes more than 20 years of professional experience advising national and international companies in project finance and infrastructure, banking and finance, capital markets, corporate, M&A, as well as securities, derivatives and Fintech Law.

He represents national and international lenders, sponsors, borrowers and governments in a large number of financial transactions, including private equity and venture capital of infrastructure projects, public offerings, securitizations and privatizations. He also has broad experience advising the public sector in designing and structuring operations related to public works, public procurement, and public-private partnerships (PPP’s), which includes the drafting of the latest Federal Law of Special Economic Zones, which was created to enhance the economic and social development of Mexico.

Lawyer with honors from the Escuela Libre de Derecho; earned an LL.M in European Union Law by the Universidad Carlos III in Spain and a PhD in Law with honors by the Universidad Complutense in Madrid, Spain.

He has participated as a speaker in several national and international forums such as LatinFinance Mexican Financial Summit, LatinFinance Infrastructure and Sub-Sovereign Finances Summit, IMEF National Infrastructure Forum, IJ Global Latin American Energy and Infrastructure Finance Forum, among others.

He is acknowledged by Chambers & Partners Global and LATAM, IFLR 1000, Legal 500 and Best Lawyers.

 

Mergers and Acquisitions

Banking and Finance

Capital Markets

Project Finance and Infrastructure

Procurement and Privatizations

Public-Private Partnerships

Corporate

Sergio Chagoya D.

Sergio’s practice includes more than 20 years of professional experience advising national and international companies in project finance and infrastructure, banking and finance, capital markets, corporate, M&A, as well as...

César Cruz A.

  • Partner
  • Monterrey Office

 

César is currently based in the Monterrey Office with a career spanning over 28 years. He has positioned himself in the Northern region of Mexico as an expert to structure, negotiate, and implement sophisticated business transactions, including international and domestic joint ventures, share and asset deals, as well as corporate restructuring, reorganization, and finance projects.

César has played a key role in the development of e-commerce, privacy, and personal data protection practices, providing advice to clients for the design and implementation of strategies for compliance on the matter.

He is a member of the International Bar Association (IBA) and is the President of the Legality and Rule of Law Committee of the American Chamber of Commerce of Mexico, Monterrey Chapter.

He earned his JD from the Facultad Libre de Derecho de Monterrey, Mexico and an LL.M of Comparative Jurisprudence from the New York University School of Law, USA.

 

Mergers and Acquisitions

Banking and Finance

Restructuring

Corporate

César Cruz A.

César is currently based in the Monterrey Office with a career spanning over 28 years. He has positioned himself in the Northern region of Mexico as an expert to structure,...

Juan Carlos de la Vega G.

  • Partner
  • Monterrey Office

 

Juan Carlos is the current managing partner of S+S and is the head of the labor and employment practice group. He has 34 years of professional experience handling both individual and collective labor matters.

He is recognized as a leading lawyer at a national and international level in his area of expertise due to his significant role in the resolution of union disputes in the mining and automotive industry in Mexico.

He provides advice to multinational companies in the retail, hotel and oil industries, among others, confronting the effects of labor legislation in terms of subcontracting matters and labor regulatory aspects in general. He has played a key role in the planning and development of the union strategy for the Mexican emerging private oil industry.

He has recently advised many relevant companies in the country in redefining their union strategy considering the challenges of the 2019 labor reform and USMCA.

He is a member of the Board of Directors of the Employment Law Alliance (ELA); the Mexican Bar Association (BMA) and is the Vice President of the Labor Experts Commission of the Employer’s Confederation of the Mexican Republic (COPARMEX) and Deputy director of the of the Labor Commission of Index (National Council of the Maquiladora and Export Manufacturing Industry.

He earned his law degree from the Universidad Iberoamericana in Mexico City and has a specialization in Labor Law, Amparo Law and Corporate Law from the Universidad Panamericana in Mexico.

Juan Carlos is acknowledged and recommended by Chambers and Partners LATAM in Band 1, Legal 500, Best Lawyers and LACCA.

 

Labor and Employment

Social Security

Juan Carlos de la Vega G.

Juan Carlos is the current managing partner of S+S and is the head of the labor and employment practice group. He has 34 years of professional experience handling both individual...

Roberto Fernández del Valle M.

  • Partner
  • Mexico City Office

 

Roberto has more than 19 years of experience representing clients during trials on real estate matters, recovery of past due portfolios, compliance with different types of contracts, class actions, conflicts between shareholders, civil liability, as well as pain and suffering matters, mediation and arbitration processes, among others.

His outstanding work has strengthened his position in Mexico as an expert in litigation, commercial arbitration and insolvency proceedings.

He is member of Asociación Nacional de Abogados de Empresa, Colegio de Abogados, A.C. (ANADE), International Chamber of Commerce México (ICC Mexico) and International Bar Association (IBA).

He is Professor of Obligations II at the Universidad Iberoamericana, Mexico.

He earned his law degree from the Universidad Iberoamericana in Mexico City; has a Legal Specialization in Civil Law from the Escuela Libre de Derecho, in Mexico; has a Diploma in the New Constitutional Regulation of Human Rights and Protection from the Escuela Libre de Derecho, in Mexico; a Diploma in Anti-Corruption from the ICC Mexico-Universidad Panamericana, in Mexico and LL.M in Constitutional Law and Human Rights from the Universidad Panamericana, in Mexico.

 

Arbitration

Civil and Commercial Litigation

ADR

Roberto Fernández del Valle M.

Roberto has more than 19 years of experience representing clients during trials on real estate matters, recovery of past due portfolios, compliance with different types of contracts, class actions, conflicts...