Key legal question
Whether the appeal was admissible despite the missing attached lower-court decision and failure to cure the defect
Extracted holding
The formal defect was not cured within the set grace period, so the appeal could not proceed.
Extracted reasoning
The court had indicated the defect under Art. 42(5) in connection with Art. 42(3) BGG, but the appellant did not remedy it by 6 May 2013.