The woman's attorney, Guo Jianmei, said she received confirmation from the Supreme People's Court, the country's highest court, about its ruling in the case of Li Yan, who had been sentenced to death in 2011 for slaying her husband.
Li has become a rallying point for activists against domestic abuse in China, where police and courts commonly turn a blind eye to victims of domestic violence.
The high court's ruling means Li will likely be spared execution after a retrial, a significant victory for the hundreds of lawyers, intellectuals and activists who signed a petition early last year urging the court to reject the penalty.
Li's younger brother, Li Dehuai, also said today his sister wrote to him about the ruling in a letter he received yesterday.
Those who supported Li Yan said she deserved some leniency because of the repeated verbal and physical abuses she suffered, and her sense of desperation after attempts to seek help from police and a government-run women's group were unsuccessful.
"In the struggle for human rights and women's rights in China, this decision will be remembered," said John Kamm, an American rights campaigner who runs the Dui Hua Foundation.
"The oppressor has been put on notice. No more violence with impunity."
