Kernrechtsfrage
Whether the appeal against the interlocutory ruling rejecting the res judicata objection is admissible under Art. 93 BGG.
Extrahierter Entscheid
The appeal was not admissible because no irreparable legal disadvantage was shown and the conditions for immediate review to save considerable time or costs were not established.
Extrahierte Begründung
The alleged disadvantages were mainly factual; possible duplicate litigation and enforcement issues did not amount to a legal disadvantage. The appellant also failed to show concretely that an immediate federal decision would avoid extensive evidence-taking.