Eric Lux has now filed an official legal complaint against Force India driver Adrian Sutil.
The affair follows an incident in a Shanghai nightclub in April, during which Renault team co-owner Lux was reportedly cut on his neck with a broken champagne glass.
The Frankfurter Allgemeinen Zeitung reported late on Wednesday that the Luxembourger finally filed a complaint, probably some time last week.
"There is a pending complaint for grievous bodily harm against Herr Sutil," a spokesman for the prosecutor confirmed.
German Sutil’s manager Manfred Zimmermann commented: "We are confident the court will come to the conclusion that this was not about Adrian attacking anybody."
Zimmermann added that, following an initial contact during which Lux demanded that Sutil sit out some grands prix, there have been no other talks about an out-of-court settlement.
FAZ said the prosecutors will investigate Lux’s complaint and then decide whether to bring charges.