Lee Jae-yong has been ordered back to prison for two years and six months on bribery charges. The de facto leader and heir to the Samsung group conglomerate, is known as Jay Y. Lee in the West.
The billionaire son of controversial Samsung Chairman Lee Kun-hee was first jailed in 2017. Lee served just one year of a five-year sentence before a retrial was ordered in 2019.
Park is serving a 20-year sentence on a variety of charges including bribery related to Samsung. Lee had been accused of offering horses and other bribes to a friend of the former president to win government support for his succession.
Lee Jae-yong is the grandson of Samsung founder Lee byung-chul. He also pledged that he would not pass management control of the Korean dynasty to his children.
The ruling is expected to create a leadership vacuum at the top of the conglomerate. Samsung is currently run by a team of senior executives.