Judge Tharwat Hamad ordered Sunday that Al-Wasat Party leaders Essam Sultan, Gamal Gabriel and Muslim Brotherhood member Taher Abdel-Mohsen be referred to Cairo Criminal Court on charges of insulting the judiciary.
Several judges filed complaints against the defendants, accusing them of insulting the judiciary by accusing the institution of corruption in interviews with the press.
The complaints also came after the accused promoted a proposed law to retire some 3,500 judges aged over 60.
Earlier in November, a Cairo appeal court set 10 December for the trial of former Brotherhood Supreme Guide Mahdi Akef for insulting the judiciary.
Since Mohamed Morsi’s ouster 3 July and the bloody dispersal of pro-Morsi protest camps in mid-August, hundreds of Islamists, mainly Muslim Brotherhood leaders and members, have been arrested.