The son of bankrupt billionaire Sean Quinn was involved in a calculated, deliberate and repeated attempt to interfere with the administration of justice and defraud the former Anglo Irish Bank, a court has heard.
The lender claims it has 30 strands of circumstantial evidence to support a conviction that Sean Quinn junior participated in a million euro payment to a Ukrainian woman as part of an asset-stripping plot.
Paul Gallagher, senior counsel, urged the Supreme Court to uphold his jail sentence in light of new evidence brought before the five-judge bench.
He said there was no doubt the High Court had been misled, and that the integrity of its orders must be upheld.
"This is nothing but a calculated, deliberate and repeated attempt to interfere with the administration of justice and defraud my client and others of these assets," Mr Gallagher added.
Quinn jnr is appealing an indefinite sentence and a single contempt of court conviction that he was involved with a payment of 500,000 euro (£401,200) by a Ukraine company to Larissa Puga, general director of Quinn Properties Ukraine (QPU) - which the Quinns owned 15% of.
Four of five judges hearing the appeal questioned the lack of direct evidence linking him with the movement of the cash on the eve of the takeover of the company by the bank in August 2011.
Mr Justice Donal O'Donnell said while features of the Quinn evidence were discredited, and brought great disgrace on the Quinn family, he queried Quinn jnr's conviction. He added the Quinns had admitted conspiracy around the asset-stripping scheme, but vehemently denied any involvement in this payment.
A smartly dressed Quinn jnr, who was released from Mountjoy's low security training centre for the fourth day of his appeal, sat at the back of the courtroom with his wife Karen Woods. brother-in-law Niall McPartland and prison officers. He was brought back to prison when the court reserved its judgment.
It is expected to be delivered next week before the case is back in the High Court to examine if Quinn senior has purged his contempt and complied with several coercive orders.