Olisa Metuh is facing trial on a seven-count charge of fraud brought against him by the Economic and Financial Crimes Commission, EFCC.
He is accused of receiving N400 million illegally from the office of the former National Security Adviser, Sambo Dasuki, but has denied doing anything wrong.
Mr. Metuh is asking the apex court to set aside an earlier decision of the high court which ordered the defendant to open his defence.
He also asked the Supreme Court to suspend his ongoing trial at the lower court, pending the determination of his substantive appeal, but the application was refused on June 10.
The apex court in a ruling on the matter asked Mr. Metuh to continue his trial while the ongoing appeal subsists.