The NUP had filed its case to challenge the earlier July 29, 2020 verdict of the Court of Appeal upholding its deregistration by the electoral body.
The prosecution said he reasonably ought to have known that N322million out of the purchase sum formed part of proceeds of an unlawful act.
The judge held that the EFCC proved beyond reasonable doubt that the convicts committed fraud.
The judge described the convicts as being rude while being cross-examined in the decade-long trial.
Debunking the argument that he had jumped bail, Mr. Maina said he only travelled to the Republic of Niger to have a knee surgery done.