A court in China has upheld a six-year prison sentence for a Chinese entrepreneur who made unlicensed copies of Lego toy blocks valued at 300 million yuan ($A60 million).

The Higher People’s Court in Shanghai also upheld a 90 million yuan ($A18 million) fine imposed on the entrepreneur, identified only by his surname, Li, according to a court announcement.

The appeals court also upheld sentences ranging from three to four-and-a-half years for eight other defendants.

Starting in 2015, Li and the other defendants set up a factory that made copies of Lego bricks and toys and sold them under the brand name Leping, the court said.

The Shanghai court concluded the offence was an “especially serious” violation of copyright law and rejected their appeal.