To be taken to court over it is apt (6)
I believe the answer is:
suited
'apt' is the definition.
(I've seen this in another clue)
'to be taken to court over it' is the wordplay.
'to be taken to court' becomes 'sued' (to sue someone is to take them to court).
'over' means one lot of letters goes inside another.
'sued' enclosing 'it' is 'SUITED'.
'is' acts as a link.
(Other definitions for suited that I've seen before include "Well adapted" , "Matched" , "Was convenient to" , "Appropriate, fitting" , "agreed" .)