Guillermina Ester
Guillermina Ester

Contact

gester@perezllorca.com
T: +34 91 426 03 68
F: +34 91 436 04 30
Paseo de la Castellana, 50
28046 Madrid
Spain

Practice areas

  • Arbitration
  • Litigation

Profile

Guillermina Ester is a partner of the Litigation and Arbitration practice at Pérez-Llorca. She joined the firm in 2005 after working at Jones Day for five years. She was named partner of the Litigation and Arbitration practice in 2010. From 2006-2007, Guillermina completed a secondment at Slaughter and May in London.

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 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 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:

  • “Returning to the Issue of Nationality: Venoklim Holding B.V. v. Bolivarian Republic of Venezuela, ICSID Case No. ARB/12/22, Final Award and Concurring and Dissenting Opinion 3 April 2015” The Journal of World Investment & Trade, vol. 17, No. 5, 2016
  • “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” Chapter in Global Arbitration Review.
  • “Court issues milestone ruling for sharing economy and digital platforms”, International Law Office.
  • “BlaBlaCar: un caso de resistencias”, Opinión. Publicado en Expansión, marzo 2017.
  • “Progression of women in the Spanish legal sector”, International Bar Association. Section on Public and Professional Interest, Women Lawyers’ Group, septiembre 2017.
  • “The “decisive influence” test: the ECJ judgment on Uber”, International Bar Association. Legal Practice Division, International Litigation Newsletter, mayo 2018.

Professional Organisations

The Madrid Bar Association (ICAM).
Spanish Arbitration Club (CEA) and CEA under 40.

Recognition

Guillermina Ester features in various legal ditrectories such as:

  • Chambers Global: Dispute Resolution
  • Chambers Europe: Dispute Resolution
  • Who’s Who Legal Arbitration: Future Leaders
  • Leaders League: International Arbitration
  • Best Lawyers® Arbitration and Mediation, Litigation

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)
__Find a lawyer

Team

Lawyers

Practice areas
Position
Office
Team Guillermina Ester
Return

Partner

Guillermina Ester

Team

Lawyers

Practice areas
Position
Office

Partner Guillermina Ester

Practice areas

Office

Madrid

Contact

gester@perezllorca.com
T: +34 91 426 03 68
F: +34 91 436 04 30
Paseo de la Castellana, 50
28046 Madrid
Spain

Profile

Guillermina Ester is a partner of the Litigation and Arbitration practice at Pérez-Llorca. She joined the firm in 2005 after working at Jones Day for five years. She was named partner of the Litigation and Arbitration practice in 2010. From 2006-2007, Guillermina completed a secondment at Slaughter and May in London.

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 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 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:

  • “Returning to the Issue of Nationality: Venoklim Holding B.V. v. Bolivarian Republic of Venezuela, ICSID Case No. ARB/12/22, Final Award and Concurring and Dissenting Opinion 3 April 2015” The Journal of World Investment & Trade, vol. 17, No. 5, 2016
  • “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” Chapter in Global Arbitration Review.
  • “Court issues milestone ruling for sharing economy and digital platforms”, International Law Office.
  • “BlaBlaCar: un caso de resistencias”, Opinión. Publicado en Expansión, marzo 2017.
  • “Progression of women in the Spanish legal sector”, International Bar Association. Section on Public and Professional Interest, Women Lawyers’ Group, septiembre 2017.
  • “The “decisive influence” test: the ECJ judgment on Uber”, International Bar Association. Legal Practice Division, International Litigation Newsletter, mayo 2018.

Professional Organisations

The Madrid Bar Association (ICAM).
Spanish Arbitration Club (CEA) and CEA under 40.

Recognition

Guillermina Ester features in various legal ditrectories such as:

  • Chambers Global: Dispute Resolution
  • Chambers Europe: Dispute Resolution
  • Who’s Who Legal Arbitration: Future Leaders
  • Leaders League: International Arbitration
  • Best Lawyers® Arbitration and Mediation, Litigation

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)

Office

Madrid

Contact

gester@perezllorca.com
T: +34 91 426 03 68
F: +34 91 436 04 30
Paseo de la Castellana, 50
28046 Madrid

Spain

We use third-party cookies to enhance our services and show you advertising relating to your preferences by analysing your browsing habits. If you continue browsing, we consider that you accept their use. You can change the settings or obtain more information here.