Defense lawyer Mohamed El-Damaty told CNN that Morsy's team will argue that it is illegal under the constitution approved under Morsy to try a President without approval of two-thirds of the members of the parliament. The military suspended that constitution, but the court could honor it, El-Damaty said.
Morsy had been held at an undisclosed location since the coup. Amnesty International has described his detention as an "enforced disappearance." After Monday's hearing, Morsy will be taken to the Borg El-Arab prison in Alexandria, state-run TV reported.
State-run Al Masriya TV reported that Morsy was transported by military plane to the court. The other defendants were transported by military armored vehicles.
Who represents Morsy?
It wasn't immediately clear after Monday's proceedings whether Morsy will accept the lawyer provided to him, as accepting legal representation could be perceived as acceptance of the court and the trial.
Morsy's Islamist Freedom and Justice Party, the political wing of the Muslim Brotherhood, assigned lawyer Mohamed Selim El-Awa to him. El-Awa argued Monday that the court doesn't have jurisdiction to try Morsy, and that Morsy is illegally held -- asserting that anything gleaned during his detention would be null and void.
Lawyer Rajia Omran, who represents victims of the December clashes, repeatedly argued that this isn't a political trial -- saying she'd been working on the case since December, months before Morsy's ouster.