Firm Profile > Janson > Brussels, Belgium


Dispute resolution Tier 2

At Janson, financial litigation, white-collar crime cases, arbitration matters and corporate disputes were prominent in the team's recent workload. Dominique Blommaert is 'an excellent and experienced litigator'; he co-heads the department with Cédric Alter, who is very experienced in arbitration, and white-collar crime expert Céline Masschelein.

Practice head(s):

Dominique Blommaert; Cédric Alter; Céline Masschelein


Dominique Blommaert is very pragmatic and able to come to amicable solutions‘.

Key clients

Belfius Bank



MCS Holding

KBC Bank


Bank Degroof Petercam


Intellectual property Tier 2

Janson's team demonstrates a high level of expertise in IP litigation, as well as negotiating complex licenses (and other IP-related agreements) or planning protection strategies. Its client roster includes well-known brands and other large organisations active in sectors such as engineering, luxury goods, chemicals and automotive. Mireille Buydens is knowledgeable about all facets of patents, trade marks, copyrights and designs. She has a standout reputation in IP litigation, and is an expert on unfair trade practices in the food sector. Buydens jointly leads the practice with Hans Dhondt, whose IP experience dates back more than 20 years. He is leading advice to a group of producers on proceedings arising from the illegal distribution of TV and film productions online.

Practice head(s):

Mireille Buydens; Hans Dhondt

Other key lawyers:

Charles Bernard


‘Great team.’

‘Mireille Buydens is an exceptional litigator, Charles Bernard is great and Hans Dhondt too.’

‘They are very responsive, write very clear and sound advice and have a high level of expertise. Their strategic thinking in difficult matters is also striking.’

‘The managing partner (Hans Dhondt) for IP is personally involved in the cases they handle, available and has a hands-on mentality, which improves speed of handling, personal connection and quality overall. I have never experienced this level of service with any other IP department in law firms.’

‘Hans Dhondt is a very good hands-on attorney who has a good feel of what clients want. The team is fast and pragmatic and they deliver everything on time.’

‘Very high quality of work against a good price. Value for money.’

‘Hans Dhondt and Mireille Buydens are superb. Hans is very good with his clients and Mireille is super smart.’

Key clients

Pernod Ricard

WAMO (trading under the tradename ZEB)

Belgian National Orchestra

Norwegian University of Science and Technology


Nuscience Group

Maisons du Monde

Alco Group

Fatboy The Original


Jacobs Douwe Egberts

Linea 2000 (acting under the trade name DOMO)


Van Gogh Museum

Fred Perry

Environment Tier 3

At Janson, the public and administrative law practice fields practitioners with 'excellent legal knowledge' of environmental matters. Waste management, permits, soil pollution issues, environmental tax and environmental criminal law are among the team's areas of expertise. Dominique Lagasse is acting for Recupel (alongside other non-profit organisations) before the Constitutional Court in ongoing proceedings over the imposition of taxes in the Flemish and Walloon regions on waste management organisations. Jan Ghysels has particular expertise in expropriations and town and country planning law. Stijn Verbeke has established strength in handling environmental take-back obligations and environmental management agreements, particularly in relation to waste electronic and electrical equipment. Other key names include Geoffrey Ninane and counsel Jo Rams, who 'sets himself apart from his peers by his determination and drive to find legal solutions'.

Practice head(s):

Dominique Lagasse; Jan Ghysels; Stijn Verbeke; Geoffrey Ninane

Other key lawyers:

Jo Rams

Key clients



Insolvency and restructuring Tier 3

Janson assists distressed enterprises, their managers and shareholders in all potential crisis situations, ranging from preventative judicial reorganisations to bankruptcy petition filing and voluntary liquidations. Cédric Alter, recognised by clients as 'a very good insolvency professional', often acts as a court-appointed trustee in various proceedings. He co-heads the practice alongside litigation specialist Dominique Blommaert, who divides his time between the Brussels and Ghent offices, and Emmanuelle Bouillon. The team also has experience in negotiating out-of-court settlements where necessary.

Practice head(s):

Cédric Alter; Dominique Blommaert; Emmanuelle Bouillon


Cédric Alter is an excellent lawyer, a very good insolvency professional and a respected individual.

Key clients

Le Pain Quotidien



New Look






Janson is a multidisciplinary and multilingual business law firm, founded in 1950. The firm has around 100 lawyers, of which the vast majority of the partners and senior associates hold academic positions.

The Belgian and foreign clients of the firm are major, medium-sized and small companies, public authorities, individuals, foundations and (international) non-profit organisations. They are active in all sectors of the economy, from finance, real estate, communication, energy, automotive, insurance, health to environment.

Janson is independent of other structures and has close ties throughout the world with other law firms that are reputed in their respective countries for their independence and their high-quality work.

Department Name Email Telephone
Public and administrative Dominique Lagasse
Public and administrative Jan Ghysels
Banking and finance Dominique Blommaert
Banking and finance France Wilmet
Commercial and company Marc Dalle
Commercial and company Peter Parez
Construction Jean-Nicolas Pardon
Construction Didier Bracke
Distribution Laurent du Jardin
Energy, climate change and mobility Guy Block
Insurance and liability Paul-Henry Delvaux
IP, IT and trade practices Mireille Buydens
IP, IT and trade practices Hans Dhondt
Employment Johan Kerremans
Insolvency law Cédric Alter
Real estate Jean-Nicolas Pardon
Tax Frédéric Fosseur
White collar crime François Koning
White collar crime Céline Masschelein
Arbitration Cédric Alter
EU law and competition law Bruno Lebrun
Photo Name Position Profile
 Prescillia Algrain  photo Prescillia Algrain Counsel Prescillia Algrain joined Janson’s Banking and Finance department in 2012, after…
 Cédric Alter  photo Cédric Alter Partner Cédric Alter joined Janson as a partner in September 2007 and…
 Muriel Baudoncq  photo Muriel Baudoncq Partner Muriel Baudoncq joined Janson as a partner in November 2017. She…
 Martine Berwette  photo Martine Berwette Partner Martine Berwette is specialised in intellectual property as well as in…
 Guy Block  photo Guy Block Partner With more than thirty years of experience in energy and transport…
 Dominique Blommaert  photo Dominique Blommaert Partner Dominique Blommaert joined Janson in 1994 and has been partner at…
 Mireille Buydens  photo Mireille Buydens Partner Mireille Buydens heads the IP, IT and Trade Practices department of Janson with Hans Dhondt.…
 Johannes Cassiman  photo Johannes Cassiman Senior Associate Johannes Cassiman advises and assists clients in all aspects of…
 Hans Dhondt  photo Hans Dhondt Partner Hans Dhondt is partner at Janson since 2012 en co-heads the…
 Frédéric Fosseur  photo Frédéric Fosseur Partner Frédéric Fosseur specialises in tax law. He advises and represents his…
 Jan Ghysels photo Jan Ghysels Partner Jan Ghysels is a partner at Janson since 2004. His field…
 Johan Kerremans  photo Johan Kerremans  Partner Johan Kerremans joined Janson as a partner in 2013.  He assists…
 Dominique Lagasse photo Dominique Lagasse Partner Dominique Lagasse specialises in advice and litigation in the fields of…
 Bruno Lebrun  photo Bruno Lebrun Partner
 Céline Masschelein  photo Céline Masschelein Partner Céline Masschelein joined Janson as a partner in March 2016, after…
 Geoffrey Ninane  photo Geoffrey Ninane Partner Geoffrey Ninane is partner in the Public and administrative law department.…
 Lydie Van Muylem  photo Lydie Van Muylem Counsel Lydie Van Muylem joined Janson in 2010 and has been appointed…
 Stijn Verbeke photo Stijn Verbeke Partner Stijn Verbeke is lawyer at the Brussels Bar and started his…
 Kris Wauters  photo Kris Wauters Counsel Kris Wauters has been a lawyer since 1993 and specialises in…
 France Wilmet  photo France Wilmet Partner France Wilmet joined Janson as a partner in October 2017. She…
Number of lawyers : 94
Other offices : Ghent
Other offices : Nivelles
Other offices : Mons