Ces deux dernières sociétés ont soutenu que la clause attributive de compétence du Juge de Paix de Viadana (Mantova), contenue dans les contrats, était abusive au sens du code civil italien (article 1469 bis, point 19) et, par conséquent, inopposable aux parties aux contrats (article 1469 quinquies).
OMAI and Cape contended that the clause in those contracts conferring jurisdiction on the Giudice di Pace (Magistrate), Viadana, was unfair within the meaning of the Italian Civil Code and was consequently unenforceable against the parties to the contracts.