Question juridique clé
Whether the refusal to hear witnesses on alleged trademark degeneration violated the right to be heard.
Solution extraite
No violation: the rejected evidence was deemed, in anticipatory assessment, incapable of proving that the mark had become generic in Switzerland.
Motifs extraits
A party's right to evidence is not unlimited. A court may close evidence when the proposed evidence is unsuitable or irrelevant, or when it can already form a conviction that further evidence would not alter. The challenged witness offers were not apt to prove that all relevant Swiss consumer and trade circles no longer saw 'Montessori' as a trademark.