Egypt's Court of Cassation will hear the appeals of former President Hosni Mubarak and his Interior Minister Habib al-Adly on January 13 after both were sentenced to life imprisonment for failing to stop the killing of protesters during last year's uprising.
A Cairo criminal court had convicted Mubarak and Adly with the murder and attempted murder of peaceful protesters during the events of the uprising.
Six former chief officials have been acquitted from the charges.
About 850 people were killed in the 18-day uprising that toppled Mubarak and his regime.
The court was scheduled to consider their appeals on Sunday.
In case the court accepts their appeals, Mubarak and Adly will earn a retrial before a different court.
Charges of graft and corruption against Mubarak and his sons, Gamal and Alaa, were dropped due to the expiry of the statute of limitation.