Questão jurídica principal
Whether the federal appeal against the cantonal decisions was filed within the statutory deadline
Decisão extraída
No. The appeal period began on the deemed service date after the first failed delivery attempt and expired before the filings of 5 and 13 March 2008.
Fundamentação extraída
Under Arts. 100, 44 and 45 BGG, the first failed registered delivery attempt on 18 January 2008 triggered deemed service on 25 January 2008; later attempts and actual pickup did not affect the deadline.