Kernrechtsfrage
Whether the supplementary filing of 10 May 2010 was timely.
Extrahierter Entscheid
The supplementary submission was filed after the appeal deadline and was therefore inadmissible.
Extrahierte Begründung
The challenged decision was served on 20 March 2010; the ten-day deadline expired on 14 April 2010, taking court vacations into account. The 10 May 2010 filing was late.