Juan Oñate

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...

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.

Luis Jiménez-Arellano is a lawyer, member of the Bar Association of Ciudad Real since 2004 and of the Bar Association of Madrid since 2009. He has completed a Master's Degree in Labor Law at Centro de Estudios Financieros (CEF) and has extensive experience in the defense of labor, civil and criminal lawsuits . He joined Bufete Mas y Calvet in 2009, where he has specialized in Labor Law , Civil Administrative Litigation and Criminal Law . He collaborates with media in articles about lab...

Mariola Ruíz is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance and Compliance Practice and Trade Law. Mariola, who practices law in Madrid, Spain, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mariola is held by other top lawyers in the same geographic and legal practice area.

Cristina Simón Amián joined the law firm in 2005. A practising lawyer. A graduate of law from the Complutense University of Madrid. Received a diploma at the Madrid Centre for Economic and Taxation Studies (CETE). Cristina specialises in Commercial, Procedural and Insolvency Law. Possessing solid experience in the field of company law, she advises companies from various sectors on the matters that affect them from day to day. Incorporation processes and commercial company develo...

Licenciado en derecho por la Universidad Complutense de Madrid, Letrado del Ilustre Colegio de Madrid 72.539, Socio Director y CEO de Vilches Abogados , colegiado y en ejercicio desde el año 2001. Master en Derecho en el Colegio de Abogados y ex opositor a Notarías. Profesor y ponente de la Universidad UCAM, y miembro de la Asociación de Abogados de Familia (AEAFA). Disponible en el despacho de Abogados Madrid de: OFICINA CENTRAL Vilches Abogados C. de Jorge Juan, 78, 5B,...

Gabriel Fernández Rojas is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law. Gabriel, 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 Gabriel is held by other top lawyers in the same geographic and legal practice area.

Joaquín Serralta Huerta is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Mergers and Acquisitions Law. Joaquín Serralta, who practices law in Madrid, Spain, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Joaquín Serralta is held by other top lawyers in the same geographic and legal practice area.

Manuel has a long standing experience in company occupational, corporate, taxation and accounting assessment and auditing, over a period of more than 30 years constantly in contact with companies, SMEs, large companies and multinationals. He is fully committed to the management of the office's most important clients, having played a key role in procuring excellent management results. He is a regular speaker and columnist for highly prestigious forums (Deusto University, Faculty of Economics a...

Nuria Amarilla is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice. Nuria, 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 Nuria is held by other top lawyers in the same geographic and legal practice area.