According to the 2015 report on Chinese patent operation, patent transfer remains the major type of Chinese patent operation.

In 2015, over 110,000 times of transfer assignment were observed, followed by patent license of 16,514 times and patent pledge of 10,998 times. Electrical date processing was the most active technical field of patent operation.

http://english.sipo.gov.cn/news/official/201605/t201605 18_1269720.html