
The practice at ALTIUS is recognised for its ‘expert staff who work very precisely’, with expertise covering IP law, unfair competition, and regulatory disputes. The firm is strong in patents, anti-counterfeiting, trademarks, copyrights, design and software piracy. Christophe Ronse leads the team, focusing on patent law and life sciences. Olivier Vrins is ‘easygoing, thorough and the go-to-lawyer for any must-win case concerning trademarks and customs measures’. Also of note are Philippe de Jong, who focuses on regulatory matters linked to the life sciences and agri-food industries, and Kirian Claeyé, who also focuses on the life sciences industry.
Testimonials
Collated independently by Legal 500 research team.
‘Expert staff who work very precisely. All aspects of the case are investigated and provided with advice. They fight the defendant with great determination. Similar commitment can be seen when our rights have to be defended.’
‘Expertise and depth, case is investigated down to the smallest detail to avoid surprises in the courtroom.’
‘Very communicative, lots of webinars, nice people and very good lawyers!’
‘Olivier Vrins is easygoing, thorough and the go-to-lawyer for any must-win case concerning trademarks and customs measures. ’
‘Strong knowledge of IP and a deep team make this a preferred firm for rights holders in Belgium.’
‘Christophe Ronse is a very experienced advocate and litigator and conducts proceedings with style.'
- 'Kirian Claeyé is a younger partner and is proactive and helpful in actions.’
Key clients
- Attorney General Office and Government of Pakistan
- Bayer Pharma
- Bristol Myers Squibb
- Bureau National Interprofessionnel du Cognac (BNIC)
- Comité Interprofessionnel du Vin de Champagne (CIVC)
- (Belgian) Federal Public Service of Economy
- Gilead
- Jordens
- Hologic
- Moët Hennessy
- Merck Sharp & Dohme (MSD)
- Novartis
- Organon
- Tinnus / Zuru inc
- Supercube
- BASF
- Cartonnages Roland
- VMD - Inovet
- David Austin Roses LTD
- Mayoly Spindler / Ipsen
- Zimmermann
- Amgen
- AbbVie
- Moderna
Work highlights
- Representing Bayer in litigation before the Brussels courts regarding the patent protection for the once-daily dosages of Xarelto®.
- Representing Google before the Belgian Constitutional Court in the nullity action it has initiated against the Belgian Act of 16 June 2022 which transposes EU DSM Directive 2019/790.
- Representing oriGIn (the global alliance of Geographical Indications (GI), representing some 600 associations of producers and other GI-related institutions from 40 countries) before the EU General Court.
Lawyers

Practice head
The lawyer(s) leading their teams.
Christophe Ronse, Philippe de Jong, Olivier Vrins, Kirian Claeyé