Joy Li
Patent Attorney

Joy Li has over 13 years of work experience in the field of Patent for Chinese and foreign clients. As a patent attorney, Joy is mainly responsible for patent application, patent reexamination, patent invalidation, patent search and patent infringement and stability analysis. Her major technical fields include Mechanical Engineering, Electronic Engineering, Vehicle Engineering, Water Resources and Hydropower Engineering, and Computer Simulation, etc.

+86 10 88369999
Patent Prosecution
Beijing / Taiwan

Practice Focus

Technical Fields

Mechanical Engineering
Electronic Engineering
Vehicle Engineering
Water Resources and Hydropower Engineering
Computer simulation

Years with IP Matters

2008 until now

Professional  Experience

Patent attorney at Chang Tsi & Partners, Beijing, China(2020-)
Patent attorney, Partner of ShenDa Intellectual Property, Qingdao, China (2017-2020)
Patent attorney at DEQI Intellectual Property, Beijing, China (2009-2017)
Patent Engineer at JinYanChengXin Intellectual Property, Beijing, China (2007-2008)

Representative Cases

  • Before CRCC products enter the Indonesian market, Joy conducted patent search and infringement analysis, and presented the strategy for patent invalidation, so as to overcome all the patent obstacles.
  • Patent mining for major research and development projects.
  • Most of the patent applications for domestic and foreign clients were granted patent rights.


Masters in Mechanical Engineering, Graduate School of Chinese Academy of Sciences (2004-2007)
Bachelor, Central South University, China (2000-2004)

Bar Admission

Chinese Patent Bar (2009)


Mandarin Chinese