Daniel Mas

Juan Antonio Caubet Blanco is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law. Juan Antonio, who practices law in Barcelona, Spain, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juan Antonio is held by other top lawyers in the same geographic and legal practice area.

Viviana Copló Ordás is a top attorney recognized by Best Lawyers in the practice area(s) of Investment. Viviana Copló, who practices law in Barcelona, Spain, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Viviana Copló is held by other top lawyers in the same geographic and legal practice area.

Sonia Frouchtman is part of the family law department. She is specialized in family law and inheritance.

Esau Alarcon is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Doctor, master’s and graduated in Law by Barcelona University; his professional career is linked to the GIBERNAU ASESORES office, in which he has been a member since February 2017. Professor of the Abat Oliba CEU University in the fiscal and contentious-administrative field. A corresponding Academician of the Royal Academy of Jurisprudence, Legislation and columnist of Iuris & Lex – e...

Degree in Law from the University of Barcelona. Master’s Degree in Tax Consultancy and Management from ESADE. After more than twenty years of professional experience and having developed his career in firms such as KPMG, Andersen or Broseta, in April 2024 he joined ETL GLOBAL ADD as a partner in the tax area. He has extensive experience in tax advice to companies, national and international groups, indirect taxation in real estate transactions and Due Diligence processes. He also teache...

Professional experience Mariano began his professional career in CUATRECASAS GONÇALVES PEREIRA (1997-2012) where was specialized in Legal & Tax Law to companies, Family business and HNWI. In 2012 joined KPMG (2012-2015), where co-leaded the Family Bussines and Private Client practice in Barcelona, Girona, Balearic Islands and Andorra offices. On January 2016 joins 4|5|3| Law Firm (former Marco Legal, Abogados & Economistas) as a partner, leading the Firm’s Tax Department....

Alvaro Quintairos Domenech is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance and Compliance Practice. Alvaro, who practices law in Barcelona, Spain, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alvaro is held by other top lawyers in the same geographic and legal practice area.

Marta joined Crowe Tax & Legal in 2007 as Partner responsible for the Department of Procedural Law in Barcelona. Over 20 years of experience in Civil Procedure Law, also in charge of the Personal Data Protection and Prevention of money laundering.

Blanca De Riba Vidal de Villalonga is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Blanca De Riba, who practices law in Barcelona, Spain, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Blanca De Riba is held by other top lawyers in the same geographic and legal practice area.

Xavier Amat Badrinas xab@avqlegal.com Partner responsible for the Corporate Department Education: He has a degree in Law (1984) from the Institute of University Studies (IEC in Barcelona) and the Spanish Open University (UNED in Madrid). He has also taken postgraduate courses in Community Law, Real Estate Law, Tax Law and Accounting. Professional experience and expertise: Xavier is a co-founding partner of the firm, head of the Business department, and his activity is focused on commercial la...