Again is to take to court the new edition (7)
I believe the answer is:
reissue
'new edition' is the definition.
(I know that new edition can be written as reissue)
'again is to take to court' is the wordplay.
'again' becomes 're' (prefix meaning 'again').
'to take to court' becomes 'sue' (as in suing somebody in court).
're'+'is'+'sue'='REISSUE'
'the' acts as a link.
(Other definitions for reissue that I've seen before include "Again 22 across" , "Publication reprint" , "Put out yet again" , "Send out again" , "Publish again (books, records, etc)" .)