Document carriers coming from very short legal proceedings? (10)
I believe the answer is:
briefcases
'document carriers' is the definition.
(briefcases contain documents)
'very short legal proceedings?' is the wordplay.
'very short' becomes 'brief' (I've seen this before).
'legal proceedings?' becomes 'cases' (case is a kind of legal proceeding).
'brief'+'cases'='BRIEFCASES'
'coming from' acts as a link.
(Other definitions for briefcases that I've seen before include "Holders of papers" , "File holders" .)