Questão jurídica principal
Whether the appeal against the annulment of the summons was admissible under Art. 93(1)(a) BGG.
Decisão extraída
The challenged decision did not cause an irreparable legal disadvantage; the appeal could not be heard.
Fundamentação extraída
Refusal of evidentiary steps in criminal investigation proceedings normally does not satisfy Art. 93(1)(a) BGG. Any evidence request can be renewed later, and a rogatory examination remained possible. No imminent loss of evidence was shown.