Plaintiff, a Belgian company who holds the rights on the famous watches branded "Ice Watch", commercialized its watches in packages that strongly resembled the children's toys Lego, which are characterized as cubes with specific bumps on top of them which allow the Lego cubes to be fastened on each other (allowing to build constructions composed by Lego cubes). In addition, also the promotional materials of the plaintiff, such as presentation furniture, hangers, etc. were construed in the same way and resembled the children's toys.
Defendant, the right holder (including a trade mark) on the Lego toys, introduced a claim against the plaintiff, stating amongst others that by using said packages, the plaintiff infringed the rules on unfair commercial practices. In first instance, the defendant was followed by the judge who stated that the commercial practices in question were indeed misleading.
The plaintiff appealed to this decision.