Founded in 1991, Tianzheng Patent Attorney, formerly known as official patent attorney of Zhejiang University of Technology, is one of the largest patent agencies in Zhejiang province. Tianzheng was authorized by state council as an international patent agency, and served as designated agency for Zhejiang University and Zhejiang University of Technology. The service of Tianzheng includes patent applications (domestic and international), patent infringement dispute litigation, patent invalidation request, etc. The attorney has applied for more than 30,000 patents, of which more than 15,000 invention patents. Tianzheng owns a professional agent team that is proficient in intellectual property rights and work with technical background and rigorous attitude, which is worthy of trust of client. Tianzheng Patent Attorney has 13 practicing patent agents, including 1 senior professional researcher and 4 associate professional researchers. The young elites of Tianzheng graduated from Peking University, Shanghai Jiao Tong University, Zhejiang University and other famous institutes and faculties, their technical background include machinery, electronics, automation, chemistry, chemical engineering, bio-pharmaceuticals, etc.

Tianzheng has a skillful and experienced patent attorney team, earns a good reputation in patent infringement proceedings field. Tianzheng handled with more than 500 IPR infringement cases, such as the patent infringement cases of Basph Chemistry prosecuting Zhejiang Longsheng, Basph Chemistry prosecuting Shanghai Kehua, Huntsman Advanced Materials prosecuting Shanghai Kehua, Robam prosecuting Sacon, Sacon prosecuting Robam, etc. Acting as IPR consultant of 8 listed companies, Tianzheng is committed to apply prosecuting experience to patent application, strive to make patent withstand the test of litigation, and obtain real and effective IPR protection for clients. Cooperating with foreign patent agencies form more than 50 countries and regions such as the United State, Japan and Europe, Tianzheng applies more 100 PCT each year, and global intellectual property services to the clients.

Tianzheng adheres to the creed of "dedication and reliable", has worked for a large number of patent applications, trademark registration, and a series of well-known patent infringement proceedings, reexamination invalidation cases, trademark review and adjudication cases, against unfair competition cases. For decades, Tianzheng cooperated with numerous famous enterprises and maintained a long term service relationship.