Joey Van den Broeck, 21, had been charged with assaulting his girlfriend and resisting arrest.
But he subsequently died in hospital in Antwerp after a road crash in Merksem, reports GVA.
A spokesman for Antwerp court said: "Unfortunately, he had been summoned to appear in court shortly before for beating up his girlfriend.
"When he didn't show up, the case went ahead without him. We didn't know about his death or the case would have expired." (GVA)