Overturned, invalidated (8)
I believe the answer is:
annulled
This clue is a double definition.
'overturned' is the first definition.
('annul' can be a synonym of 'overturn')
'invalidated' is the second definition.
('annul' can be a synonym of 'invalidate')
(Other definitions for annulled that I've seen before include "Cancelled" , "Declared invalid" , "Made invalid" , "Made legally void" , "Declared to no longer exist" .)