Isabel Martínez Moriel > Andersen > Madrid, Spain > Lawyer Profile

Calle de Velázquez, 110

Work Department

Privacy, IT & Digital Business; Anti-Trust and European Union




With an extensive experience in prestigious national and international law firms, Isabel Martínez Moriel specializes primarily in Competition and EU law as well as IT and Data Protection.

Her practice is concentrated on matters related to restrictive agreements, cartels, abuse of dominant position, merger control filings and state aids. Her experience includes counselling on antitrust proceedings before Spanish and EU competition authorities, appeals of sanctioning decisions before courts, drafting of compliance and cooperative programmes and advising on any matter related to Competition and EU law.

Likewise, she advices on data protection compliance, including international data transfers (authorizations, privacy shield, binding corporate rules, etc.) and legal proceedings before the Spanish Data Protection Agency; on IP agreements, unfair competition and on EU regulatory frameworks governing internet, consumers and life sciences as well as its implementation in Spain.

She has served both domestic and international companies as well as associations, public entities and holdings, acting in numerous relevant sectors (pharma and medical devices, insurance companies, financial services, infrastructure and public works, electronic communications, energy, investment and research projects, transport, retail, amongst others).

She is currently a lecturer at Complutense University of Madrid and regularly participates in MA in Legal Practice at Carlos III University. She regularly contributes articles and publications regarding law research and case law developments.

DPO and certified mediator registered with the Ministry of Justice.


Spanish, English, French


  • Ilustre Colegio de Abogados de Madrid, ICAM
  • Asociación Española de Defensa de la Competencia, AEDC
  • Asociación Profesional Española de Privacidad


  • Degree in Law, Universidad de Córdoba
  • M.A. in EC Competition Law, King’s College London
  • Master in International Law, Instituto de Estudios Bursátiles, IEB

Lawyer Rankings

Spain > Industry focus: Healthcare and life sciences

Andersen handles a varied range of mandates, including M&A, the data protection aspects of clinical trials and pharmacovigilance-related matters. The group is also adept at advising on criminal risk management systems and information exchanges. Working out of the Madrid office, Isabel Martínez Moriel has broad knowledge of data protection and privacy issues. Morial assists with numerous international data transfers and privacy shields, and regularly appears before the Spanish Data Protection Agency.

Spain > EU and competition

Praised by clients for its ability to ‘provide outstanding EU cross-border assistance’, Andersen  possesses significant experience in antitrust investigations, merger control filings and cartel cases. The ‘fantastic’ Isabel Martínez Moriel, who focuses on cartel investigations and proceedings and demonstrates notable strength in the IT sector, is at the helm of the practice.

Spain > Data privacy and data protection

Andersen, which draws on a substantial network of lawyers across its offices in Madrid, Barcelona, Valencia and Seville, stands out for IT and digitalisation projects, for which it blends expertise in data privacy, digital business, regulatory, and IP law. Clients praise ‘its ability to find the best solution to the problems raised in an agile and effective way‘. Lead partner Isabel Martínez Moriel is experienced in data protection, privacy, IT and competition law. Associate María Zarzalejos, who focuses on commercial and regulatory matters, and corporate partner María Suárez, who handles data protection audits and due diligence projects, also play key roles in the practice.