Question juridique clé
Whether the arbitral tribunal violated the right to be heard by deciding a technical similarity issue without appointing an expert.
Solution extraite
No violation was shown because the arbitrator could decide the limited technical question on the basis of the evidence already taken, including witness testimony and product catalogues.
Motifs extraits
A tribunal may refuse further evidence if it is already convinced. The issue was not particularly complex, and the appellant did not show which special technical knowledge was missing or why an expert was indispensable.