Gonzalo Martín de Nicolás Presa

Efrén Díaz Díaz is a Lawyer and Doctor of Law. Senior Associate at Mas y Calvet Law Firm (Madrid). Head of the Technology and Space Law Areas of the Mas y Calvet Law Firm. Data Protection Officer in Europe in the financial, legal, health, geospatial and educational sectors.Specialist in Administrative, Technological and Geospatial Law, he develops tasks in regulated sectors, technology, foundations, geospatial coordination Cadastre-Property Registry, public and private co...

Ana Rodríguez Cantarero is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Ana, who practices law in Madrid, Spain, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ana is held by other top lawyers in the same geographic and legal practice area.

Juan Ortiz Úrculo is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense. Juan, who practices law in Madrid, Spain, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Juan is held by other top lawyers in the same geographic and legal practice area.

Partner since 2010. Law degree from the Universidad Autónoma de Madrid. Master’s Degree in Corporate Legal Counseling. General Manager of Blecua Legal. Responsible for the litigation area. His professional practice is developed mainly in the handling of judicial and arbitration proceedings in the field of construction, industry, civil liability and insurance.

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

Juan Antonio Marín Alvarado is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Juan Antonio, who practices law in Madrid, Spain, has been recognized since 2020. 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.

Antonio Sánchez Recio is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Antonio, who practices law in Madrid, Spain, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Antonio is held by other top lawyers in the same geographic and legal practice area.

Ainhoa Veiga, partner of Araoz & Rueda since 2005, joined the firm as an associate in 1998. She is specialized in Competition/EU Competition, advising clients before the Spanish/EU competition authorities. Ainhoa has also extensive experience in intellectual property matters, unfair competition and mergers and acquisitions.

Carlos Martínez-Cava Arenas is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. Carlos Martínez-Cava, who practices law in Madrid, Spain, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carlos Martínez-Cava is held by other top lawyers in the same geographic and legal practice area.

Javier Prieto, partner of the Tax Department at Araoz & Rueda since 2011, joined the firm after three years as a partner at the Tax Department at Ramón y Cajal (2008-2011). Prior to joining Ramón y Cajal he worked as an associate in the Tax Department at KPMG Abogados (1999-2002) and then as an associate in the Tax Department at Uría Menéndez (2002-2008). Javier is specialized in: Tax advice arising from national and international M&A transactions (investme...