Axel Springer and other media companies are suing Google. The lawsuit is about the online advertising market, which generates around $600 billion in sales worldwide.

The plaintiffs accuse Google of unfair practices in the so-called adtech area. A Google spokesman said: "The present lawsuit is speculative and questionable in nature and we will take vigorous and objective action against it""More than 30 European news media companies today filed a damages claim worth 2.1 billion euros against Google because of its adtech practices," said a law firm.