Iliad, Italy's fourth-largest mobile phone player, filed a complaint a year ago, saying the deal - which received the green light by both the industry minister and the national communications watchdog - would restrict competition.

The court argued Iliad did not have the right to ask the annulment of a commercial agreement between two private companies and that its request was inadmissible, the document showed.

(Reporting by Domenico Lusi, writing by Elvira Pollina, editing by Giulia Segreti)