Penny's annoyed by design originally being copied without permission (7)
I believe the answer is:
pirated
'copied without permission' is the definition.
(I've seen this in another clue)
'penny's annoyed by design originally' is the wordplay.
'penny' becomes 'p' (short for pence).
'annoyed' becomes 'irate' (I've seen this before).
'by' is a charade indicator (letters next to each other).
'originally' says to take the initial letters.
The initial letter of 'design' is 'd'.
'p'+'irate'+'d'='PIRATED'
'being' acts as a link.
(Other definitions for pirated that I've seen before include "Used in defiance of copyright" , "Copied" , "Published without permission" , "knocked off" .)