Texas-based business software firm Versata has filed a complaint with the European Commission against German enterprise software producer SAP.
Microsoft and Intel are among several US companies that have faced similar charges, but SAP is one of the first European IT sector firms to be investigated by the EC competition authorities, according to the Financial Times.
Versata alleges that SAP illegally excluded it from selling pricing configuration software to some of the world's biggest corporations.
According to Versata, SAP refused to share interoperability information that would enable Versata pricing software to run along with SAP's enterprise resource planning (ERP) software.
Versata also accuses SAP of cloning Versata's pricing software, bundling it with SAP's ERP software and telling customers that Versata's product would not work properly.
The complaint follows on from a US court case in which a Texas jury found SAP had infringed two Versata patents relating to pricing software.
Versata wants the EC to impose a fine and order SAP to provide interoperability information and separate its pricing configuration software from its ERP software.
As the investigation is ongoing, SAP has declined to comment.