Thomas Derval

Thomas specialises in contract & tort, financial and insurance law. He combines an advisory and litigation practice in these fields.

He has an all-round regulatory expertise and advises a wide variety of Belgian and international private and public clients active in the regulated economy at large (banking, insurance, investment, payment, credit, crowdfunding, etc.). In this context, he has developed a significant experience in assisting actors of the Fintech and Insurtech industry and quickly grasps the impact of new technologies on his clients’ business.

Thomas is an expert in contract law and civil liability. He advises his clients on complex B2B and B2C contract and liability questions, and he represents their interests before the courts in civil and commercial disputes (among others when involving a financial or insurance law component). He also acts in proceedings brought by or before the regulators (FSMA and NBB) or the Ombudsman.

In addition to his practice, Thomas is an Assistant Lecturer and a member of the Private Law Centre at the Free University of Brussels (ULB), where he gives seminars in Contract & Tort. He regularly speaks at conferences and writes scientific contributions in his fields of expertise.

He is also an expert member of the Unfair Terms Commission, which is notably in charge of advising the Government, the Parliament, public entities and other stakeholders on unfair terms initiatives.

Thomas is the recipient of the Georges Boels pleadings prize awarded by the French-speaking Brussels bar. He also received various professional accolades and is notably considered a “next generation partner” in Insurance and is recommended in Financial Services and in the Fintech sector.

Master of Laws (ULB), 2011
Advanced Master in Economic Law (ULB), 2012
LL.M. (University of Oxford), 2017
Member of the Brussels Bar, 2012

News

Publications

Derval, T. and Lambert, Ch.-E., « L’ordre et l’interdiction préventifs du dommage (art. 6. 40 C. civ.) »,
T. Malengreau (coord.), La réforme de la responsabilité civile, Brussels, Larcier, 2024, p. 294
1 January, 2024
Derval, T. and Güler, E., « L’incidence de la jurisprudence de la CJUE en matière de clauses abusives sur les règles de droit commun de la nullité et des restitutions »,
J.D.E., 2024, p. 42
1 January, 2024
T. DERVAL, « La localisation du préjudice financier : application de la jurisprudence européenne par la Cour de cassation »
(note sous Cass., 5 septembre 2019), R.D.C./T.B.H., 2021, p. 61
1 June, 2023
T. DERVAL et Ch.-E. LAMBERT, « La conclusion dynamique du contrat »
Le livre 5 du Code civil et le nouveau droit des contrats, in La réforme du droit des obligations, Bruxelles, Larcier, 2023, p. 195
1 January, 2023
Th. DERVAL, R. JAFFERALI et al. (dir.), La réforme du droit des obligations. Présentation générale des livres 1er et 5 du nouveau Code civil
Bruxelles, Larcier, 2023, 820 p.
1 January, 2023
T. DERVAL et Ch.-E. LAMBERT, « La formation statique du contrat : le consentement et la capacité »
Le livre 5 du Code civil et le nouveau droit des contrats, Larcier, Bruxelles, 2022, p. 74
2 June, 2022
« La conclusion dynamique du contrat »
Th. DERVAL et Ch.-E. LAMBERT, « La conclusion dynamique du contrat », in R. Jafferali (coord.) Le Livre 5 du Code civil et le nouveau droit des contrats, coll. UB3, Bruxelles, Larcier, 2022 p. 73
1 June, 2022
« La localisation du préjudice financier: application de la jurisprudence européenne par la Cour de cassation » (note sous Cass., 05/09/2019)
R.D.C./T.B.H., 2021, p. 61
3 May, 2021
Derval, T., and Sauvage, D.-A., « Quelques réflexions sur la rencontre des véhicules autonomes avec le droit des assurances »
Time to reshape the digital society - 40th anniversary of the CRIDS, Brussels, Larcier, 2021
1 January, 2021
Derval, T., and De Thaye, Ch., « Hoe goed dienen verzekeraars op de hoogte te zijn van de levenswijze van hun verzekerden? »
Bull. Ass./T. Verz., 2021, p. 187
1 January, 2021
T. DERVAL, « Arrêt Löber : la localisation du dommage extracontractuel du fait d’un prospectus trompeur »
(note sous C.J., 12 septembre 2018, Löber, aff. C-304/17), J.D.E., 2019, p. 107
6 June, 2019
T. DERVAL et R. JAFFERALI, « La clause arbitrale : une clause contractuelle comme les autres ? »
Liber Amicorum en l’honneur des cinquante ans du CEPANI, 2019, Mechelen, Wolters Kluwer Belgium, 2019, p. 209
6 June, 2019
T. DERVAL, « L’application du principe Fraus omnia corrumpit en matière aquilienne »
(note sous Cass., 30 septembre 2015), R.G.D.C./T.B.B.R., 2016, p. 550
8 June, 2016
T. DERVAL, « Assurance vie et limitation des actifs éligibles : évolutions à venir ? »
For. Ass., 2016, p. 61
2 June, 2016
T. DERVAL et Ch.-E. LAMBERT, « Condition résolutoire et clause résolutoire expresse : ressemblances et dissemblances »
JurimPratique, 2016, p. 81
1 June, 2016
« L’application du principe Fraus omnia corrumpit en matière aquilienne »
Note sous Cass. 30 septembre 2015, R.G.D.C.-T.B.B.R., 2016, pp. 550-558.
26 February, 2016
« Condition résolutoire et clause résolutoire expresse: ressemblances et dissemblances »
JurimPratique, 2016, pp. 81-103
5 January, 2016
« Assurance vie et limitation des actifs éligibles : évolutions à venir ? »
For. Ass., 2016, pp. 61-62.
3 January, 2016
T. DERVAL et L. GRAUER, « Infraction urbanistique et illicéité de l’objet du contrat de vente : un trait d’union ténu »
R.G.D.C./T.B.B.R., 2015, p. 422
5 June, 2015
P.A. FORIERS avec la collaboration de T. DERVAL, « Les contrats commerciaux : les principes »
Chronique d’actualités en droit commercial, coll. CUP, Bruxelles, Bruylant, 2013, p. 47
6 June, 2013
T. DERVAL, « La réglementation des clauses abusives entre entreprises dans le secteur de la Bancassurfinance »
Les clauses abusives B2B après la loi du 4 avril 2019, Bruxelles, Anthemis, 2020, p. 481
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