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Guillermina Ester
Contact
gester@perezllorca.com
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Practices and Sectors
- Arbitration
- Litigation
Profile
Guillermina Ester is a partner in Pérez-Llorca’s Arbitration and Litigation practice area. She joined the firm in 2005 and was named partner of the practice in 2010. Prior to this she worked at a prestigious international firm for five years.
Studies:
- 2018 General Management Programme (PDG), IESE Business School
- 1999 Degree in Law, Universidad Carlos III de Madrid
- 1997 International Law Programme, Law Faculty of Universitat van Amsterdam
She speaks Spanish and English.
Experience
Guillermina Ester’s practice is focused on civil, commercial and corporate litigation and arbitration. She advises and defends the interests of both national and international clients on complex pre-litigious and litigious matters (before tribunals of all instances and in arbitrations). Guillermina’s practice covers a wide range of conflicts such as those arising from contractual disputes (relating to joint ventures, sale and purchase agreements, distribution, construction and EPC contracts, and price adjustments), corporate litigation (such as directors liability or shareholders disputes), unfair competition and banking litigation.
Academic and Publishing Collaborations
Guillermina lectures on litigation and arbitration for the Master’s degree for Access to the Legal Profession at the Universidad Carlos III de Madrid. She also regularly lectures on litigation and arbitration for various seminars and conferences.
Recent articles
Guillermina also regularly writes for the Firm’s Newsletters and Informative Notes to clients, as well as for specialist magazines. She has recently written the following articles:
- “La regulación de la actividad de las plataformas prestadoras de servicios en internet: el caso BlaBlaCar y el test de la influencia decisiva en la actividad subyacente”, Diario La Ley, Nº 9554, Sección Tribuna, Editorial Wolters Kluwers; enero 202
- “¿Cuáles son los procedimientos para recuperar un edificio ocupado?”, Metros2; septiembre 2018
- “The “decisive influence” test: the ECJ judgment on Uber”, International Bar Association. Legal Practice Division, International Litigation Newsletter; mayo 2018
- “Progression of women in the Spanish legal sector”, International Bar Association. Section on Public and Professional Interest, Women Lawyers’ Group; septiembre 2017
- “Court issues milestone ruling for sharing economy and digital platforms”, International Law Office; marzo 2017
- “BlaBlaCar: un caso de resistencias”, Expansión; marzo 2017
- “Mutualidad de previsión social vs. sociedad. Compraventa de acciones de una compañía aseguradora”, Práctica contenciosa para abogados, Editorial Wolters Kluwer; 2016
- “The European Arbitration Review 2017: Spain” Capítulo en Global Arbitration Review; noviembre 2016
- “International Fraud & Asset Tracing. Spain chapter” Capítulo en Jurisdictional comparisons. European Lawyer Reference. Third edition 2015. Thomson Reuters; diciembre 2014
- “International Civil Fraud. Spain chapter” Capítulo en International Civil Fraud. Jurisdictional comparisons. European Lawyer Reference Series; mayo 2014
- “Las novedades en materia concursal de la Ley 14/2013, de 27 de septiembre, de apoyo a los emprendedores y su internacionalización”, Fiscal&Laboral; noviembre 2013
Professional Organisations
The Madrid Bar Association (ICAM).
Spanish Arbitration Club (CEA) and CEA under 40.
Recognition
Guillermina Ester features in various legal directories such as:
- Chambers Global: ‘Dispute Resolution’.
- Chambers Europe: ‘Dispute Resolution’.
- Leaders League: ‘Commercial Litigation’ and ‘International Arbitration’.
- Who’s Who Legal: Litigation 2019.
- Best Lawyers®: ‘Arbitration and Mediation’, ‘Litigation’ and ‘Construction Law’.
Awards
- Financial Times Innovative Lawyers: Highly Commended, “Most Innovative Law Firms in Dispute Resolution” (2019) (featuring a matter Guillermina Ester advised on).
- Iberian Lawyer: 40 under Forty (2013).
- Universidad Carlos III: Award for Excellence (“Premio de Excelencia”) (2013).
