The golfer finished the European Tour event three under par following four rounds at the Education City GC, Doha.
On the par-71 course, Coupland, who is attached to Woodhall Spa GC, shot rounds of 68 on Thursday, Friday and Sunday.
However, he carded 78 shots on a frustrating Saturday round as he finished tied for 47th.
That was enough for him to leave with a cheque for 7,139.06.
The event was won by Spain’s Jorge Campillo, who pocketed 258,655.56 Euros after finishing on -13.
Coupland will return to action at the Hero Indian Open at New Delhi, beginning on March 19.