c) Business trips 

Point 2.3 of the 2008 Notice lists "business trips which have been firmly booked before the notification of the summons to oral proceedings" as a serious reason for changing the date of oral proceedings (departments of first instance). In (vi) of Art. 15(2)(b) RPBA 2020 business trips have been added to holidays.

Concerning appeal proceedings, the board in T 869/06 accepted such a reason for changing the date of oral proceedings.