Copyright is clear (6)
I believe the answer is:
patent
I believe this clue is a double definition.
'copyright' is the first definition.
(I've seen this before)
'is clear' is the second definition.
(synonyms)
(Other definitions for patent that I've seen before include "Blatant" , "Licence for invention; obvious" , "It protects an invention" , "licence inside" , "Registration of invention or trade-name" .)