Later, Hardik Patel and his two aides - Lalji Patel and A K Patel - were granted bail by the same court.
Visnagar sessions court Judge V P Agarwal held Hardik Patel, Lalji Patel and A K Patel guilty under IPC sections pertaining to rioting, arson, damage to property and unlawful assembly.
The three were awarded two years imprisonment along with a fine of Rs 50,000 each, which the trio deposited in the court on Wednesday.
The other 14 accused were let off by the court for want of enough evidence against them.
From the penalty collection of Rs 150,000, the court ordered that Rs 10,000 be given to TV channel reporter Suresh Vanol, Rs 100,000 to the owner of a car torched by the mob during violence and Rs 40,000 to local BJP MLA, Rishikesh Patel, towards damage caused to his property.
Hardik Patel, 25, was one of the accused in the FIR which was filed in Mehsana district on July 23, 2015, when a rally of the Patel community seeking reservation turned violent in Visnagar, resulting in damage to property and assault on some media persons.
During the violent agitation, the mob had torched a car and vandalised the office of local BJP MLA Rishikesh Patel.
A rally of more than 25,000 people of the Patel community demanding reservation was then at the initial stage of quota movement in Gujarat.
At that time, Hardik Patel was not a known figure and was one of the foot soldiers of Lalji Patel, who is the president of the Sardar Patel Group (SPG), a quota agitation body.
The rally in Visnagar was the first prominent event of the quota movement when Hardik Patel came into limelight.
As per the case details, when the rally reached near the office of MLA Patel, some Patidar community members tried to meet him to hand over a memorandum of their demands.
However, when they did not find the MLA in his office, they got angry and ransacked his office.
It was also alleged that protesters had torched a car parked on a road in the area.
Some media persons were also attacked by the mob at that time.
The complainant in the case was TV channel reporter Vanol, who was brutally thrashed by those present in the rally.