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Our Firm is made up of a group of multidisciplinary professionals that are carefully selected in light of their credentials and proven experience. The service provider market is under profound and transcendental change. We recognize that the value of Dayston resides in its team members and each one contributes something unique to the fulfillment of its vision. In such regard, Dayston invests considerable efforts and resources to groom leaders of the legal and business advisement sector.

Meet our team:

  • Attorney. Diego Alejandro López Ramírez Chief Executive Officer

  • C.P.A. José de Jesús Varela Rábago Chief Financial Officer

  • Attorney. Eduardo Héctor de la Garza Jiménez Chief Operating Officer

  • Attorney. Gustavo Dávila Valencia Partner

  • Attorney. Raúl Alejandro Pérez del Río Partner

  • María Virginia Iribe Osuna Junior Associate

Lic. Diego Alejandro López Ramírez


Practice areas

  • International Tax Law
  • Banking & Finance
  • Capital Markets

Diego is a founding Partner at Dayston and graduated with honors from one of the most prestigious law schools in the country: Universidad Panamericana.

Diego also holds diverse diplomas in mediation and negotiation (UP – Abi Roli), international financing and payment methods (International Chamber of Commerce), public-private partnerships (Inter-American Developing Bank) and international taxation and transfer pricing (Leiden University MOOC). Diego is in charge of the tax and finance law practice areas.

His expertise is particularly attractive to foreign and international companies that seek to invest in Mexico, as he has profound experience in understanding the clients business and operation, and has advised many foreign companies in the “soft landing” of their investments, incorporation, structuring, and operation of their business.


  • Universidad Panamericana - Law Dregree (With Honors)
  • Universidad Panamericana - Currently Pursuing a Master's Degree in Tax Law
  • Universidad Panamericana – ABA Roli Mexico. Course - Workshop on Mediation and Negotiation Techniques
  • ICC-Universidad Panamericana - Diploma in Financing and International Payment Methods


  • Técnicas para una Negociación Eficaz: La Herramienta Crítica del Abogado. Published in Perspectiva Jurídica UP, legal journal, edition number 06, year 2016.
  • A New Approach to International Tax Law. Published in Perspectiva Jurídica UP, legal journal, edition number 09, year 2017.
  • Addressing Virtual Currencies in Mexico. Published in Year in Review of the American Bar Association, edition 2017.
  • Taxing the Digital Economy. Published in Perspectiva Jurídica UP, legal journal, edition number 15, year 2021