1991.

Sangao Patent Office was established in Beijing. 

2002.

Changed its name to Beijing Sangao Yongxin Patent Office. 

2003.

With the approval of the relevant competent department under the State Council, it shall obtain the qualification of patent agency concerning foreign affairs. 

2003.

Changed its name to Beijing Sangao Yongxin intellectual property Agency Co., Ltd. 

……

2018.

        We have lawyers, agents, senior experts and consultants and more than 100 professionals.We represent thousands of clients at home and abroad in intellectual property affairs.And many well-known domestic enterprises, institutions of higher learning and scientific research institutions to maintain long-term and stable cooperative relations. It has extensive contacts and cooperation with nearly 100 legal service organizations around the world. Has established long-term and good business cooperation relations with well-known firms in the United States, Canada, Germany, France, the United Kingdom, Japan, South Korea, Australia, Hong Kong, Taiwan and other countries and regions. This is to ensure that the three high Yongxin customers in the world can quickly obtain quality legal services. With many years of experience and solid professional skills, for a number of enterprises, universities, research institutes to organize a number of intellectual property related knowledge training, and according to the needs of enterprises to provide personalized, comprehensive advisory services.