José Manuel Mateo Sierra

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...

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,...

Ignacio Guillén González is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Ignacio, who practices law in Madrid, Spain, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ignacio is held by other top lawyers in the same geographic and legal practice area.

María Gomes Sousa is a top attorney recognized by Best Lawyers in the practice area(s) of Labor and Employment Law. María, 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 María is held by other top lawyers in the same geographic and legal practice area.

Specialized in the Real Estate and Urban Planning sector; as head of land and urban planning, asset manager, comprehensive project development, investor relations, asset acquisition, and real estate taxation in various companies in the sector; such as Aliseda, Highland Developers USA, Anida (BBVA), Grupo Veintidós, and Riofisa. During the years he worked in a law firm, he provided legal advice and judicial defense in urban planning, real estate, horizontal property, and urban leases. A...

Jaime Silva is a Partner in the Employment Law and Social Security Department at the Madrid office of Andersen Tax & Legal. He previously worked at Garrigues CMS Albiñana & Suárez de Lezo and Olleros Abogados. Jaime Silva is a specialist in labour litigation and legal advice to companies in public and private sector and he has wide experience in IT industry and the posting of workers abroad. In the academic field, Jaime is lecturer in several programmes about Labour Law ...

Jenaro González del Yarro Valdés is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law. Jenaro, 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 Jenaro is held by other top lawyers in the same geographic and legal practice area.

Partner since 2010. Law degree from the Complutense University of Madrid. Master in Energy Law. Responsible for the firm and its commercial area. Her professional practice is developed mainly in the area of M&A and contracting.

Partner Manuel joined the firm in 2003 and specializes in the diverse areas of General Administrative Law (i.e. liability claims against Public Administration), Urban Planning Law and Compulsory purchases and Litigation. From 2007 to 2010, he taught about Expropriations for the MBA of Urban Planning Law at the Rey Juan Carlos University in Madrid. In addition, he completed an MBA in Real Estate Companies at the Polytechnic University in Madrid. He was also awarded an Advanced Studies Diploma ...

Javier Fernández-Samaniego is Managing Director of SAMANIEGO Law, an alternative Iberoamerican law firm specializing in technology law and dispute resolution. Javier's international practice focuses mainly in Commercial/IT disputes (international litigation, arbitration, and ADR) and negotiations and major Tech & Privacy projects (new cloud and big data business models, outsourcing transaction, data protection review programs, etc.). Javier has vast experience assisting European cl...