Inventor’s document (6)
I believe the answer is:
patent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">inventor's document</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for patent that I've seen before include "It protects an invention" , "For all to see" , "evident" , "It's registered to protect an invention" , "The invention protection is obvious" .)