An Egyptian misdemeanor court sentenced five demonstrators to two years in prison on Sunday for protesting without police authorisation on 19 November, the fourth anniversary of the Mohamed Mahmoud clashes.
Dozens of protesters died in clashes with police in Mohamed Mahmoud Street in central Cairo in 2011.
The two women and three men convicted on Sunday, who are all in detention, were convicted of illegal protesting and disturbing public order.
The verdict by Abdeen Misdemeanor Court in Cairo can be appealed.
A law issued in November 2013 requires protesters to obtain permission from the police before staging any public gatherings; hundreds of demonstrators have since been jailed under its terms.
While sections of the public support the law, it has drawn a chorus of condemnation from rights groups who say it violates freedom of assembly and speech.