Research

The School carries out applied research with the purpose of developing economically, legally, and socially-sound regulation and policy, using a multidisciplinary approach.

Rail service facilities in the European Union

Rail service facilities, ranging from maintenance depots to refuelling stations, marshalling yards and freight terminals, are indispensable components of the European rail system. As...

Authors
Elodie  Petrozziello JJMP
Contribution to book
Domestic acceptability as a condition for ambitious climate policies
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Article
EU contract case law, July-December 2025
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Executive Education

We offer different types of training: Online, Residential, Blended and Tailor-made courses in all levels of knowledge.

Policy Events

A wide range of events for open discussion and knowledge exchange. In Florence, Brussels, worldwide and online.

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Discover more initiatives, broader research, and featured reports.

Lights on Women

The Lights on Women initiative promotes, trains and advocates for women in energy, climate and sustainability, boosting their visibility, representation and careers.

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Guillaume Teissonniere

General Counsel and Company Secretary, eDreams ODIGEO
English, French, Italian, Spanish
English, French, Italian, Spanish

Biography

Guillaume serves as a General Counsel and Company Secretary at eDreams ODIGEO (eDreams, Opodo, Travellink, Liligo). Guillaume has been a General Counsel of eDreams ODIGEO since April 2016. Prior to joining eDreams ODIGEO, Guillaume worked as a Partner lawyer at the Paris and Brussels Bar with a practice focused in e-commerce, Tourism law, European law and IP/IT litigation. Guillaume is a member of the Board of EU Travel Tech (Chairman from 2019 to 2021) and is actively involved in all legal and regulatory matters impacting the transport and tourism industry currently discussed at EU level. Guillaume has also been a lecturer in e-commerce law in several French Universities (Paris Panthéon-Assas, Bordeaux and Strasbourg). Further to his native French, Guillaume speaks English and Spanish and some Italian.

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