Kernrechtsfrage
Whether the written confirmation of 25 May 1998 constituted a valid assignment of the claim against the defendants
Extrahierter Entscheid
Yes. The document sufficiently identified assignor, assignee, and the claim, and satisfied the written-form requirement for an assignment.
Extrahierte Begründung
The court held that the deed contained all essential elements of a cession under Art. 165 OR; the claim was determinable and it did not matter that it arose from a contested or already litigated contractual claim.