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Lore Derdeyn is a Counsel in our Regulatory practice and our Public Sector industry department.

Specialist areas

Lore has a broad experience in economic public law and construction law.

She has a particular focus on “contracting with the government”. She advices on regular basis governmental bodies and private sector clients on both the awarding and the execution of public procurement contracts and on other public contracts (concessions, cooperation agreements,..). She also advises the public and private sector involved in PPP/DBFM and assists with negotiations in the awarding phase and the execution phase.

She acts regularly before both the Council of State and the general courts in public procurement and economic public law matters.


Lore received her LL.M from Katholieke Universiteit Leuven (KU Leuven) (Leuven, Belgium) in 2010 (magna cum laude). After a three-year traineeship at an independent law firm in Flanders, she joined Lydian in 2013 and was promoted to Senior Associate in 2017 and to Counsel in 2019. She is a member of the Brussels bar.

Publications and speaking engagements

Lore acts regularly as a speaker at external seminars (e.g. Kluwer, Confocus, IFE, Nederlandse Kamer van Koophandel, EBP,..) and at internal client seminars on topics with regard to public procurement law. She also has written several articles and e-zines with regard to public procurement law topics.

Area of expertise

Practice areas

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