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Marie Vastmans

Lawyer - Health law; Public procurement law; Public, Constitutionnal and Administrative Law Lawyer Xirius

Marie Vastmans has been a lawyer at the Brussels Bar since 2000 and a partner in the law firm Leurquin, Verriest, Vandenput & Partners since 2009.

She was admitted to the traineeship on 2 October 2000 and registered with the French Bar Association of the Brussels Bar on 18 November 2003.

She has been recognised as a specialist in administrative and public procurement law by the French Bar Association of the Brussels Bar.

She holds a law degree, with a focus on public law and administrative law, from the Université Libre de Bruxelles (2000), and a diploma of specialised studies in public and administrative law from the Université Libre de Bruxelles (2003).

She also holds an Advanced European law training (Advanced Community Law Training Programme (2005) from the College of Europe.

As a lawyer practising Belgian administrative law in a larger sense, Marie Vastmans mainly develops her activities in the field of public procurement (advice on public procurement and public procurement litigation) and public contracts in the broadest sense (concessions, PPPs, etc.).

In her day-to-day public procurement practice, Marie Vastmans assists contracting authorities and economic operators both at the stage of public contracts and at the stage of awarding and executing them, whether they are public works, supply or service contracts. She also assists in public procurement litigation (award and execution of public contracts).

In addition to her activities as a lawyer, she is the managing administrator of ESIMAP asbl (Centre d'études, de services et d'information en matière de marchés publics) and, in this capacity, is in charge of training in the field of public procurement.

She is also a contributor to the review "Public Administration", specialising in public law, constitutional law and administrative law. She is in charge in particular of identifying new developments and current events in doctrine and case law.

Marie Vastmans is also a member of the Editorial Committee of the "Performance Publique" collection, published by Editions Larcier.

She is co-author of the book "Le nouveau droit des marchés publics en Belgique. De l'article à la pratique" (Editions Larcier, 2013, 1086 pages) and its update in 2019 (Editions Larcier, 2019, 1226 pages).

She also participated in the drafting of the proceedings of the Colloquium organised by the Conférence du Jeune Barreau in collaboration with Larcier and entitled "Le droit des marchés publics à l'aune de la réforme du 1er juillet 2013" (Public procurement law in the light of the reform of 1 July 2013).

Marie Vastmans is also co-author of the book entitled "Commentaire article par article de la loi du 17 juin 2016 relative aux marchés publics" (Wolters Kluwer, 2016, 648 pages).

More recently, Marie Vastmans published the book "Je négocie, tu négocies, ils négocient… La négociation de vos marchés publics en pratique" (Vanden Broele, 2019, 151 pages).

She practises in French as well as in Dutch.

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Les documents du marché

Formation organisée par ESIMAP


Négocier un marché dans la pratique

Séminaire résidentiel ESIMAP, du 21 au 23 octobre.


Sélection et droit d’accès

Formation organisée par ESIMAP


100 questions en matière d’attribution des marchés publics

Marie Vastmans et Cédric Willay, ouvrage à paraître chez Larcier


Secrets d’affaires et droit administratif

Article écrit par Marie Vastmans et Marie Sculier, Dossier JT, Larcier