An Egyptian criminal court on Saturday gave life sentences to 10 people being retried on charges of their involvement in violent clashes at the cabinet in 2011.
The court sentenced two juveniles to ten years and acquitted 21 other defendants.
Those found guilty were convicted of protesting, possessing firearms, and setting the Scientific Institute ablaze.
The verdict is appealable.
The "cabinet clashes" erupted on 16 December 2011 when a number of political activists and youth demonstrators declared a sit-in outside the cabinet headquarters to protest the appointment of Kamal El-Ganzouri, a Mubarak-era politician, as prime minister by the then-ruling Supreme Council of the Armed Forces.
The clashes between protesters and security forces continued for eight days, resulting in the death of 18 people and the injury of hundreds.