Google already faces antitrust charges from Europe’s competition authorities.

Now, the American search giant may be the target of a series of new civil lawsuits that claim Google abused its market dominance to favor its own services over those of its rivals.

On Tuesday, Hausfeld, an international law firm with connections to companies affected by Google’s activities in Europe, and Avisa, a European public affairs company that has represented complainants in the antitrust case, will announce that they have created an online platform, to help companies sue Google for financial damages in European courts.

The move could add to the growing legal and regulatory problems Google and other West Coast tech companies face in Europe, where policy makers have balked at these companies’ growing influence in how Europeans surf the web. In addition to the antitrust investigation into Google, European regulators are considering new copyright and privacy rules that will affect American tech companies.

Hausfeld and Avisa plan to offer information to prospective clients — primarily companies — about the European Commission’s four-year competition investigation into Google. The investigation has focused on whether Google favors its online search for shopping, restaurant results and other online services. If Google is found to have breached antitrust law, Hausfeld and Avisa would most likely use the case as evidence in any potential civil cases.