Key legal question
Whether the summons was invalid because it was not served by registered mail and was allegedly unsigned.
Extracted holding
The summons was not invalid. The defective service did not render the procedural act ineffective because the defendant actually received the summons and suffered no legal disadvantage.
Extracted reasoning
Article 85(2) StPO is primarily evidentiary. If receipt is established and the addressee can exercise procedural rights, the improper mode of service does not nullify the summons.