Corel is suing the US Department of Labour (DoL) over alleged unlawful procurement practices that divert business exclusively to Microsoft.

Corel says the DoL handed Microsoft an exclusive, three-year contract worth $8 million and is seeking an injunction against the contract.

Corel won a victory in a similar case against the Canadian government in June this year. That case involved an eight-year supply deal that had been awarded to Microsoft.

News of Corel’s suit was broken in a Reuters report.