The businessman Denis O'Brien has called on the Chairman of the Moriarty Tribunal to withdraw provisional findings circulated in November 2008.
It follows a statement at the inquiry yesterday by Mr Justice Michael Moriarty that he would be basing his report on the evidence put before him.
He is also demanding he and several others be recalled to give evidence at the inquiry.
Mr O'Brien also wants an audit by an accountancy firm of all documentation in posession of the Tribunal - saying too many documents have been supressed.
An official from the Attorney General's office insisted in evidence yesterday and today that he had "no doubt" legal advice was given in 1996 that the mobile phone licence could be issued to Esat Digifone.
Speaking at a press conference in Dublin this evening Mr O'Brien insisted the "Tribunal had set out to get his scalp, but must now admit they were wrong".