SUTHINK - Key Persons


Guo Guanhou

Job Titles:
  • Partner, Senior Patent Attorney, Senior Engineer / Practice Fields
Expert in dealing with patent application,review and invalidity disputes in the fields of chemistry, machinery and metallurgy.Having formed long term relationship with several large scale iron & steel companies and being the IP consultant serving for several large scale companies.

Li Shiduan

Job Titles:
  • Senior Partner, General Manager, Senior IP Consultant / Practice Fields
Engaged in trademark opposition,review,dispute resolution,trademark administrative litigation and related litigations involving trademark infringement ; especially expert in dealing with recognition of well-known trademarks,difficult trademark disputes and the cases involving trademark infringement investigated and punished by the industry and commerce administrative authority; further, having represented hundreds of companies dealing with difficult patent applications and certain disputes involving invalidity of patents.

Liu Xiuzhen

Job Titles:
  • Partner, Professional Patent Attorney, Associate Researcher of Patent Representation

Sun Guodong

Job Titles:
  • Partner, Senior Patent Attorney, Engineer / Practice Fields
Engaged in every type of patent applications, especially expert in dealing with patent application, review and invalidity disputes in the fields of biology, chemistry, machinery and electronics. Also responsible for review of technical contracts and dealing with disputes and arbitration involving technology assignment and other kinds of technical contracts.