Cheung Chi Chi Cheung Tak Tak owns the intellectual property and patent law firm Beijing Heng Yuan Lin Chi Hunan Office of the two companies, Cheung Chi Tak Intellectual Property Agency Co., Ltd. is a professional intellectual property agency approved by the administrative department for industry and commerce of the People's Republic of China established agency, Beijing Heng Yuan Lin Zhi Intellectual Property Office is reviewed by the China Patent Agents Association by the patent agency, Hunan has few formal patent agent qualification certificate agency. The company uses sophisticated counterparts in the field of patent agent management model to ensure that the client's patent drafting quality. Division I in the patent application and research institutions to maintain a good business relationship, in addition to domestic patent agents, trademark, copyright business, but also to accept foreign organizations and individuals commissioned by Hong Kong, Macao and Taiwan regions, apply knowledge in Chinese mainland property matters, and in accordance with mainland enterprises, organizations and individuals of the commission, in both foreign and Hong Kong, Macao and Taiwan regions for all types of intellectual property matters. Currently Wisdom of patents, trademarks, copyrights, business covering all City, Hunan Province, for foreign countries and regions, dozens of companies related to intellectual property matters dozens of agents, and for the 13 prefecture-level city in Hunan province, a Autonomous than 500 businesses and individuals apply for a trademark, patent, copyright and technology project reporting matters.