Cabinet d'avocats Altea
Cabinet d'avocats Altea
Slide One

Administrative and Constitutional Law
Immigration Law
international Family Law

Slide One

Administrative and Constitutional Law
Immigration Law
international Family Law

previous arrow
next arrow

This email address is being protected from spambots. You need JavaScript enabled to view it.

Specialized lawyer and certified mediator for family matters

Catherine de Bouyalski, avocate associée chez Altea

Email : This email address is being protected from spambots. You need JavaScript enabled to view it.
Tel : +32(0)2 894 45 76

French - English
Book an appointement

Catherine de Bouyalski, who earned a degree in law with highest honours from the Université Catholique de Louvain (UCL), has been a member of the Brussels Bar since 2008 She is a recognised specialist in private international law and immigration law by the French Brussels Bar (Ordre français du Barreau de Bruxelles).

From the very start of her academic career, she showed a strong inclination for immigration law and private international law. Her legal studies culminated in a seminar on the theme of examinations as to jurisdiction, prorogation of jurisdiction, and lis pendens and related actions in the Brussels I Regulation, which earned her a slot on the shortlist for the Jacques Falys prize.

Given that pleadings are a non-negligible part of her duties, she makes it a point of honour to have an in-depth understanding of their workings. She was recently selected as one of the nominees for the “Prix Boels”, which rewards the best pleadings by a law intern.

She completed her traineeship at the law firm of Blanmailland et Associés, where she specialised in immigration law and public international family law. She primarily practises in the following areas:

  • private international family law (applicable law and courts with jurisdiction over family matters, recognition of foreign rulings or documents in Belgium, etc.), with a special interest for international adoption cases and acknowledgements of paternity established abroad – particularly in relation to surrogacy.
  • domestic and foreign family law (marriage, refusal to celebrate a marriage, refusal to grant a certificate of non-impediment to marriage, divorce, annulment, division of marital assets, child custody, paternity challenges, domestic and international adoption, etc.)
  • immigration law (asylum, subsidiary protection status, family reunification, humanitarian and medical stays, visas, residence for European Union citizens, workers, students, acquisition and recovery of citizenship, etc.)

In November 2016, Catherine de Bouyalski was named partner at the Altea law firm where she has worked since its creation in 2012, alongside Céline Verbrouck, Michel Kaiser, and Emmanuel Gourdin. She strives to provide legal services with the same level of thoroughness and care as every single one of her partners and fellow lawyers in each of their practice areas.

Her particular fondness for issues related to paternity and the overall best interest of children has led her to develop strong expertise in areas such as surrogacy. She now represents a large number of clients who wish be recognised as parents following an international surrogacy process.

In addition, she has contributed to the formation of case law in a number of her practice areas by convincing courts to issue innovative rulings; she has had the opportunity to represent both individuals and not-for-profit groups in their challenges against statutes that violate fundamental human rights, especially the right to private and family life and the best interest of children.

Her expertise in private international law also earned her membership in the steering committee of the DIP private international law support group, which is part of the ADDE (Association pour le droit des étrangers: the Immigration Law Association) in 2015, and in the International Private Law Commission of the Brussels Bar, created in 2019.

Furthermore, she provided free legal consultation services on legal residence issues on behalf of the ADDE in 2013 and 2014, and is a member of the Foreigners’ Commission of the Belgian Human Rights League.

Catherine de Bouyalski also regularly speaks at one-day conferences and training programmes for legal professionals, local government officials, not-for-profit groups, European institutions, and the general public.

Committed to alternative dispute resolution, she completed an accredited family mediation training course at the Jean Cruyplants Centre in 2015 and 2016. This course allowed her to confront family issues from a new perspective that is far more in line with her views on national and international dispute resolution.

List of publications from Catherine de Bouyalski

  • C. DE BOUYALSKI et K. PIGNERET, « Arrêt « IB » : l'exclusivité de la résidence habituelle d'un époux dans le cadre d'une procédure en divorce », J.D.E., 2022/4, n° 288, p. 165-167.
  • C. DE BOUYALSKI, « L'adoption internationale en Belgique : historique et éléments de procédure » in Le JDJ / Journal du droit des jeunes, 407 (Septembre 2021)
  • C. DE BOUYALSKI, « Les actes d’état civil dans les demandes de regroupement familial : la preuve du lien familial », RDE 2020 - n° 207, pp.15 et s
  • C. DE BOUYALSKI, « Du vrai et du faux lien – Le contentieux civil », in Saroléa, S., Willems, G., Martens, P., Fierens, J., Bourton, F., Docketh, A., Desmet, E., Pire, D., Verhellen, J., Flamand, C., de Viron, I., Carayon, L., Truffin, B., de Theux, V., de Bouyalski, C., Vandevivere, C., Maskens, M. et Hayez, J., « Statut familial de l’enfant et migrations - Colloque du 5 octobre 2018 », J.D.J., 2018/8, n° 378, p. 8- 35.
  • C. DE BOUYALSKI et C. VERBROUCK, « Gestation pour autrui réalisée en Belgique et réception en Belgique d’une filiation issue de la gestation pour autrui faite à  l’étranger », revue Juriste international, publiée par l’Union internationale des avocats (UIA)
  • C. DE BOUYALSKI et C. VERBROUCK, « Gestation pour autrui » : le temps d’un nécessaire encadrement de la pratique », R.D.E. n°177, avril-mai-juin 2014, pp. 163 à 179
  • C. DE BOUYALSKI et C. HENRICOT, « Certificats de non-empêchement à mariage : la Cour d’appel a tranché ! », Note sous Bruxelles, 05 mars 2012, RTDF 2012/3, pp. 630 à 635
  • C. DE BOUYALSKI, « L'espace judiciaire européen en matière civile : vérification de compétence, prorogation de compétence, et incidents de litispendance et de connexité dans le Règlement Bruxelles 1 », Annales de droit de Louvain. Vol. 69 (2009), no. 1, pp. 7-72 


Altea brings together lawyers highly specialised in:

- Constitutional and administrative public law;

- Foreign nationals and private international family law.

The firm strives to be accessible.

Altea covers many intertwining areas but the firm’s lawyers all have an interest in defending human rights.


Boulevard Louis Schmidt 56, 1040 Etterbeek - Belgium

+32(0)2 894 45 70