Fininvest, the holding company of former Prime Minister Silvio Berlusconi, wants Vivendi to pay 570 million euros in damages for wanting to change the terms of a deal that gave it full control of Mediaset's pay-TV Premium and handed the two companies a 3.5 percent stake in each other.

Fininvest said in a statement the economic damage stemmed from a fall in value of Mediaset shares - which are down almost 15 percent since Vivendi's change of heart - and harm to the group's corporate image.

The move comes after Mediaset on Friday asked a court to enforce the sale and order Vivendi to pay 50 million euros for every month of delay in the deal, adding that if it fell through it would incur in damages for at least 1.5 billion euros($1.7 billion).

(Reporting by Giulia Segreti, editing by Valentina Za)

Stocks treated in this article : Vivendi, Mediaset SpA