Questão jurídica principal
Whether the Obergericht violated the right to be heard by not hearing the appellant or taking evidence on timely filing before dismissing the appeal as late.
Decisão extraída
No. The appellant bore the burden of proving timely dispatch, but offered no evidence before the cantonal decision; the court could rely on the postmark and was not obliged to invite evidence ex officio.
Fundamentação extraída
A party asserting earlier postal submission must rebut the presumption arising from the postmark with timely offered evidence. The record showed only a party assertion and a postmark dated one day late.