Fabienne Delecroix



Admitted to the Paris Bar in 1986, Fabienne Delecroix practised for seven years at Metzner Associés, where she was in charge of criminal litigation and press law, before founding the firm Delecroix-Gublin with Alexis Gublin.


Enriched by experience gained in litigation and procedure, she developed the civil practice of the firm for institutional clients and individuals.


Expert in civil procedure, familiar with difficult litigation cases in family law, she creates in the firm a core of excellence in those areas.

She is known amongst her peers for her discretion, her professionalism and her efficiency.


She supervises the relations with private and public institutional clients and the State, regarding sensitive, specific or recurring litigation.




Professional experience:
  • Admission to the Bar in February 1986

  • Firm Metzner Associés: 1986 to 1994


Main areas of intervention:
  • Family law

  • Legal liability

  • Contract law

  • Real Estate

  • Press Law

  • Criminal Law

  • Civil enforcement proceedings


Academic training:

Master in Legal Liability and Contract Law under the direction

of Professor Viney and Professor Ghestin

(University Paris I Panthéon-Sorbonne, 1982)



French and English





Alexis Gublin



Founding member of the firm, Alexis Gublin initially specialised

in traditional criminal cases. Afterwards his focus shifted towards

white-collar crime (DCN cases, wreck of Erika ship, Sentier I and II,

EDF Spying case, IKEA Spying case, Karachi affair, Libyan procedures, Embezzlement of public funds in Gabon…).


Alexis Gublin has trial experience before numerous ordinary courts (Cours d'Assises, Tribunaux correctionnels) and extraordinary

(Military Courts) and before numerous disciplinary committees (professional bodies...). He had been acting for clients in France and abroad (USA (FCPA), Japan, South Korea, Turkey, Russia, Great Britain (UKBA), Mongolia, South Africa, Chad, Ecuador, Niger, Nigeria, Djibouti, Spain, Belgium, Switzerland ...)


Alexis Gublin practices in all areas of white-collar crime

(financial, economic, political, labour and environment...)


Former auditeur at the Institute of Advanced Studies in National Defence (Fr.: Institut des Hautes Etudes de Défense Nationale), he lectures at the French National School for the Judiciary (Fr: Ecole nationale de la magistrature), the Parisian Bar School (Fr: Ecole de formation du Barreau de Paris), the Institute of Advanced Studies in National Defence, the National Institute of Advanced Studies in Security and Justice

(Fr: Institut National des Hautes Etudes de Sécurité et de Justice),

the Military School (Fr: Ecole de guerre)...



Professional experience:
  • Admission to the Bar in January 1993

  • Firm Metzner Associés: 1993 to 1994


Main areas of intervention:
  • White-collar crime cases

  • Employment criminal law

  • Military criminal law

  • Environmental criminal law

  • Stock market related criminal law

  • Criminal law

  • Counterfeit

  • Competitive intelligence and crisis management

  • Social Law

Academic training:

MA business law and tax law University Paris II Assas (1990)


French and English





Louise Lecaros de Cossios

Louise Lecaros de Cossio is an associate at Delecroix-Gublin since 2019. She is admitted to the Paris and Madrid Bars.


Louise focuses her practice on white-collar crime and international law matters, including international criminal law, human rights and arbitration.


Prior to joining the firm, Louise worked in a public international law boutique in London and as an associate in the Arbitration and Litigation department of a law firm in Madrid. She has also worked in various international organizations.


Professional experience:
  • Admitted to the Paris Bar in November 2019

  • Admitted to the Madrid Bar in October 2013

  • Lindeborg – Counsellors at Law (Londres) 2018

  • Cuatrecasa (Madrid) from 2016 to 2017


Main areas of practice :

  • White collar crime

  • Criminal law

  • International law

Education :

LL.M., University of California, Berkeley, School of Law, 2016

LL.M., The Graduate Institute of Geneva – University of Geneva, 2014

Master’s degree French and Spanish Law, University of Paris I Panthéon-Sorbonne – Complutense University of Madrid


Languages :

French, Spanish and English

Thomas Bourceau

Thomas Bourceau has been an associate at Delecroix-Gublin since 2018, he is admitted to the Paris Bar in 2020.


Thomas focuses his practice on white-collar criminal defence, international criminal law and military criminal law. He also represents and assists clients in relation to compliance matters and internal investigations.


Before joining the firm, Thomas has previously worked within the legal department of Total and EDF in the fields of international contract law, M&A and corporate law, competition law and compliance. He has also studied in England and India.


Professional experience:
  • Legal department of Total SA, 2017

  • Legal department of EDF SA, 2016


Main areas of practice :
  • White collar criminal defence

  • International criminal law

  • Military criminal law

  • Compliance and internal investigations



  • Master’s degree in European and international business law, Paris-Dauphine University, 2016

  • LL.M in International commercial law, University of Exeter, Law School, 2015.


French and English.