Kernrechtsfrage
Whether the defendant breached the contractual duty to notify the holder of the preemption right of the sale and its terms.
Extrahierter Entscheid
Yes. By selling the business without informing the claimant, the defendant breached the gérance contract and incurred contractual liability.
Extrahierte Begründung
The duty to notify the preemptive right holder existed, and the undisputed sale without notice deprived the claimant of timely exercise of the right.