Questão jurídica principal
Whether the claim was barred by res judicata because the Glarus judgment had already finally decided the disputed amounts, including set-off.
Decisão extraída
The earlier judgment had already finally adjudicated the parties' mutual claims except for EUR 129,970.05; the new claim was therefore precluded beyond that amount.
Fundamentação extraída
The court held that the substance of the earlier judgment must be determined from the whole decision, especially where a claim was dismissed after all claimed positions and payments were compared. Although set-off was not discussed as a separate formal declaration, the lower court had materially assessed the parties' reciprocal claims and recognized the resulting balance.