It's no longer a legal infringement, to be exact (6)
I believe the answer is:
extort
'be exact' is the definition.
(thesaurus)
'it's no longer a legal infringement' is the wordplay.
'it's no longer' becomes 'ex' (prefix meaning former or onetime).
'a legal infringement' becomes 'tort' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ex'+'tort'='EXTORT'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for extort that I've seen before include "Obtain money with menaces" , "To bleed" , "To get through compulsion" , "Using intimidation" , "Take from by force or threat" .)