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  • Associate
Tel. +32 9 240 77 20
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Johannes Cassiman holds a Master in Law from the University of Ghent (2013, magna cum laude). During his master studies, Johannes studied for six months at the Université de Montpellier (France). In addition, he followed the trilingual LLM in Intellectual Property Law/ICT Law organised by the KU Leuven and the HUBrussels as a complement to his activities as a trainee lawyer.

Johannes advises and assists clients in all aspects of IP protection and enforcement (advise, national and international litigation, contracts, protection strategies, etc.). He has gained valuable experience in drafting and negotiating IT-agreements (license, hosting, SaaS, IT outsourcing, software development, etc.), as well as in all aspects of data protection (GDPR compliance) and market practices (advertising, distant sales, pricing, consumer protection, etc.).


  • Advising and assisting a major group of Belgian Hospitals in its negotiations and contracting with a multinational IT company, regarding a multi-million contract on the hosting of its critical IT-systems and providing continuous advice on cross-border personal data transfers
  • Advising and representing the Dutch subsidiary of a Canadian stock-listed company in litigation regarding a failed IT/e-commerce project
  • Advising and assisting a multinational in the field of imaging solutions on obtaining digital signature certificates to participate to Belgian government tenders
  • Advising and assisting a cloud-based accounting software provider in drafting general terms of use, privacy policy and data processing agreements and drafting and negotiating contracts with various IT-suppliers and software resellers
  • Drafting of intra-group license agreements for proprietary CRM-software for various clients, including one of the largest Belgian HR and recruitment companies and a multinational company active in the sector of high-end design products and services
  • Advising and representing a UK based multinational active in the production and distribution of vitamins and food supplements in a trademark conflict with a direct competitor before the General Court of the European Union
  • Representing a major Belgian stock listed company in the recovery of its domain names before the WIPO UDRP Centre

 Dutch, English, French 


Work experience

  • 10/2013 - …: Senior Associate - Janson
  • 10/2010 - 06/2013: Tutor in Law - Legima
Admitted to the Ghent Bar.
Member of BMM (Benelux Association for Trademark and Design practitioners).

Academic functions

  • 2019 - …: Guest teacher in IP Law in the postgraduate program for Digital Storytelling, Royal Academy of Fine Arts Ghent
  • 04/2015 - 02/2019: Teacher Privacy law and Air Law, Noordzeedrones

Other mandates

  • Chair of the Next Generation lawyers EMEA group of Interlaw
  • 2017 - 2018: Supervising attorney and coach in the IusStart program, KU Leuven


  • 2013 - 2015: Participated in the Master of Intellectual Property and ICT law, joint Master of Laws of the KU Leuven and the HUBrussels (part of the curriculum taken: 45/60 credits, excluding Master Thesis)
  • 2013: Master in Law, Ghent University (magna cum laude)


Books and contributions

  • Syllabus on Air Law for Drone Pilots for the Noordzeedrones education centre for drone pilots (2018)

Journal articles

  • Grenzen aan de uitputting - 'Kan een merkhouder zich steeds verzetten tegen de wederverkoop van "refurbished" producten op grond van een wijziging in de toestand van de waar?', DAOR 2019, afl. 130, 95-101 (with H. Dhondt)



Brussels: + 32 2 675 30 30
Ghent: +32 9 240 77 20
Mons: +32 65 22 10 00
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