To mark its 75th anniversary, Janson is introducing an anniversary label that will accompany its visual identity throughout the year. It highlights the firm’s experience, continuity and ability to stay in tune with the times.

In 1950, a pioneering idea took shape: the creation of Belgium’s first structured law firm. Since then, Janson has evolved with the legal, economic and societal landscape, while keeping the law at the service of those who practise it.

Today, with nearly 100 lawyers and offices in Brussels, Ghent and Mons, the firm advises a wide range of clients in Belgium and abroad.

Founded in 1950

With over one hundred lawyers, Janson offers a broad range of services across all areas of economic activity, enabling our clients to quickly obtain the most suitable solutions for their diverse needs.

Founded in 1950, the firm has around 100 lawyers, most of whom have completed their university studies with an LL.M or another university degree from Belgium or abroad.
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Janson is a multidisciplinary and multilingual business law firm. We have extended our expertise to all sectors of economic activity, especially finance, real estate, communication, energy, automotive, insurance, health, environment...
We assist Belgian and foreign clients, companies, individuals, public institutions, foundations and (international) non-profit organisations.
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News

1st july 2025

We are pleased to announce that, as of July 1st 2025, Sophie Vanhaelst, Mikaël Gossiaux, Dorothée Danthine - de Woot and their team join Janson.

For years, they have advised clients on tax matters and wealth structuring with precision, dedication, and innovation. Their arrival marks a key milestone in strengthening our tax capabilities and expanding the scope of services we provide.

30th june 2025

We are proud to have advised SORTBAT and Bebat over the past months on several strategic M&A and corporate transactions in the battery sector, including the acquisition of HoyEnergi (Norway), the acquisition of Watt4Ever (Belgium) and the set-up of the joint venture Xbat.ai.
These transactions mark important milestones in the circular economy and energy transition landscape, and we are honoured to have contributed to the continued growth of our clients in this evolving industry.

Our team – consisting of Peter Parez, Hans Dhondt, Tsagaandari Munkhbat and Cédric Baillière – was proud to support Sortbat and Bebat throughout every stage of the process.
Congratulations to all parties involved! It was a pleasure to collaborate with such dedicated and forward-thinking teams.

25th june 2025

At Janson, teamwork doesn’t stop at the courtroom.

This year, our football team brought together colleagues from all departments, proving that collaboration, passion, and team spirit are part of our DNA.

From intense matches to shared victories (and a few good laughs along the way), Janson FC made this season one to remember.

A heartfelt thank you to all the players and supporters who made it possible. See you next season!