Criteo SA filed a complaint against Facebook Inc. with the French Competition Authority.
The open-internet advertising platform claimed the social networking giant's move to gradually exclude companies from its platform harmed the diversity of the online advertising sector.
Criteo said it wants to regain access to Facebook's platform on fair terms. It also called for clear guidelines to prevent Facebook from unfairly favoring its own services at the expense of rival providers.
Facebook is under investigation in the U.S. over whether it abused its dominant market position to engage in anti-competitive behavior.
