Key legal question
Whether the appellant had standing to challenge the seizure of the stables
Extracted holding
He lacked a legally protected interest because he was neither owner nor possessor of the seized stables and his role as shareholder/manager of the company was insufficient.
Extracted reasoning
Only those whose proprietary or possessory rights are directly affected may contest a seizure. The stables belonged to the Y. Verein by virtue of its building right; any economic link through Z. GmbH did not create standing, even after that company entered bankruptcy.