The court found Pu Zhiqiang guilty of provoking troubles and inciting ethnic hatred, and sentenced him to three years in prison but said the sentence will be suspended for three years.
Still, the guilty verdict disqualifies Pu from practicing law, and he must comply with certain restrictions and not commit crimes during the three-year period or risk being jailed.
Human rights group Amnesty International welcomed the suspended sentence but condemned the fact Pu was found guilty.
The verdict also stirred mixed feelings from Pu's supporters, who were celebrating Pu's pending release but also argue it was an injustice to find him guilty.
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"After all, an innocent man has been locked up for 19 months. Under the suspended sentence, he finally can get out," said supporter Ren Jianyu. "It's good news but with a feeling of helplessness."
Pu was active in defending free speech and represented artist Ai Weiwei in a tax evasion case that Ai's supporters said was politically motivated. He also was instrumental in pushing for the eventual abolishment of the labor camp system, which allowed police to lock up people for up to four years without a trial.
Since coming to power in 2013, Chinese President Xi Jinping has spearheaded crackdowns on civil activists, rights lawyers and online freedom of expression, in moves aimed at snuffing out any potential threats to the Communist Party's grip on power.
After a prolonged investigation, Pu stood trial on December 14 more than 19 months after his detention for several of his online comments that questioned Beijing's ethnic policies and poked fun at some political figures.