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  • Sergio de Juan-Creix Cuatrecasas

Sergio de Juan-Creix

Lawyer - Partner


Sergio de Juan-Creix has developed much of his career as an associate lawyer at the firm Cuatrecasas. He also led the IP / IT team at BDO Abogados in Barcelona. After these stages in leading law firms in Spain, and encouraged by his own clients, he founded the law firm croma legal supported by the firm Copyrait and its partner Enric Enrich.

«During my 15 years of professional practice, I have acquired extensive experience in industrial and intellectual property, unfair competition, distribution, advertising, e-commerce and personal data. In other words, I provide legal advice on those matters related to technology, commercial agreements and digital environments, on regulatory, contractual and litigation issues.

This constant exposure to innovation has allowed me to accompany and grow together with several technology or digital-based startups, even advising on shareholders agreements and investment rounds where intangible assets are a key factor. Among these startups, a unicorn ‘made in Barcelona’, as well as other well-known companies.

On the other hand, I use my experience in the mediation field to creatively resolve my clients' disputes.»

Sergio also combines his professional practice with teaching in the areas of advertising, data protection and intellectual property.

Sergio is a mediator for the World Intellectual Property Organisation (WIPO) and the Private Law Mediation Center of Catalonia.

Finally, he has different certifications in the field of privacy, such as that of an auditor of technological environments by the Barcelona Bar Association (AAULETEC) and that of Certified Data Privacy Professional (CDPP).


  • Göteborgs Universitet (Sweden), Erasmus Scholarship (2005)
  • Universitat de Barcelona (UB), Law degree (2006)
  • ESADE Business School, Master on IP/IT (2007)
  • Universitat Oberta de Catalunya (UOC), Postgraduate in Conflict Resolution (2015)


  • Lecturer of media & advertising law courses of the Communication Degree course (UOC)
  • Lecturer of the digital advertising and data protection law course (APEP)
  • Visiting professor of the international e-commerce masters course (ICEX-CECO)
  • Regular lecturer of specialised forums


Spanish, Catalan, English and French.


Sergio is the author of numerous articles on his areas of expertise and also collaborates with different media outlets.

Protección por el Derecho de la Propiedad Intelectual de las creaciones resultantes de IA

Derechos Intelectuales, December 2021

El impacto de la Inteligencia Artificial (en adelante, IA) es inmenso, aunque haya una gran incertidumbre en el tratamiento que debe hacerse, nos hallamos solo ante el inicio de su desarrollo. La regulación sobre las obras artísticas y literarias creadas por máquinas…

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