The State has won a High Court order halting legal challenges to the manner in which the State's second mobile phone licence was allocated in 1995 to Esat Digifone.
Allegations of fraud, conspiracy, deceit and corruption had been made by two consortia - Comcast International Holdings Incorporated and Persona Digital Telephony Ltd - in their challenges to the licence award.
They had also sought multi-million euro in damages.
Both consortia initiated their legal challenges in 2001, but today Mr Justice Paul Gilligan ruled that because of the inordinate delay in prosecuting the actions and other factors, the balance of justice required they should not be permitted to proceed.
