Patricia Guillén


Patricia Guillén has been an associate lawyer at BAYLOS since 2020 and has over nine years of experience in providing advice related to all types of intangible assets. Before joining BAYLOS, she worked as a lawyer specialising in industrial and intellectual property at ABG Intellectual Property and Pérez-Llorca, where she also gained experience in Commercial and Competition Law.

Patricia’s day-to-day duties involve providing national and international clients with advice regarding civil and commercial matters, and she is also regularly involved in legal proceedings before the Courts and Tribunals in industrial and intellectual property and unfair competition litigations. In addition, Patricia also advises on contract drafting and negotiations, industrial property asset portfolio management and matters relating to digital law and advertising.

Patricia works with university and learning institutions such as the Carlos III University of Madrid, ESAME Pharmaceutical Business School and the Fashion Law Association.


  • IAB SPAIN Advanced Course in Legal and Business Aspects of Digital Advertising (2020-2021).

  • Master’s in Intellectual Property and New Technologies Law from the International University of La Rioja (2020).

  • Course in European Patent Law, Centre for International Intellectual Property Studies – CEIPI (2020).

  • Master’s in Access to the Legal Profession from the Carlos III University of Madrid-ISDE (2016).

  • Bachelor’s degree in Law from the Carlos III University of Madrid (2015).

  • Bachelor’s degree in Business Administration from the Carlos III University of Madrid (2015).


  • Madrid Bar Association. Intellectual and Industrial Property, Robotics, Artificial Intelligence, and Virtual and Augmented Reality Divisions.

  • Member of DENAE (Spanish Association of Entertainment Law).


  • Observations on the Trade Secrets Law (2020) case study co-authored with seven lawyers which analyses the protection system for trade secrets.

  • New protocol for the protection of confidential information in court proceedings (2019), La Ley Journal.

  • Characteristics, scope of protection conferred and implications for businesses in the new Trade Secrets Law (2019), co-author, La Ley Journal.

  • The Baseline of Trade Secrets Litigation in the EU (2018) report coordinated by the European Observatory on Infringements of Intellectual Property Rights of the EUIPO, in which lawyers from all European jurisdictions participated.