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Jingying Yan

Patent Attorney

Phone: +861088369999

As a patent attorney, Jingying is mainly responsible for preparing patent applications, drafting patent invalidity applications, patent reexamination, and patent disputes. Her main technical fields include mechanical, electrical, and chemical engineering as well as semiconductor technology.

Technical Fields

  • Communication
  • Electronic
  • Machinery
  • Physics
  • Engineering technology

Practice Areas

  • Patent application
  • IP protection

Professional Experiences

  • Patent attorney, Chang Tsi & Partners, (2017-Present)
  • Unitalen Attorneys at Law Patent Agent (2014-2017.4)


  • Master of Condensed Matter Physics in Beijing Institute of Technology (2011-2014)

Key Accounts

  • Inspur Group Ltd.
  • Hefei Ruili Integrated Circuit Co., Ltd.
  • Truly Semiconductors Limited
  • State Grid Corporation of China
  • JinkoSolar Holding Co., Ltd.


Team Overview

Chang Tsi & Partners is proud of our excellent team of attorneys. Our attorneys are international, professional, well-educated and experienced in handling all types of commercial matters. Our partners include a few of the earliest legal practitioners in in China. Before they went into private practice, most of our partners served at government organs, judicial institutions, and/or big corporations and are thus very familiar with the internal mechanisms of these organizations. They also have established extensive, close contacts within these organizations. So our partners have the ability to integrate their social resources and create synergy to maximize the benefits for our clients.

Chang Tsi & Partners currently employs a total of 350 staffs, including 220 attorneys, agents and foreign consultants and others. The majority of our lawyers hold master's degrees and above, from prestigious law schools both domestic and international. Some of our lawyers have studied and/or worked abroad and have qualified as lawyers and patent agents in America and Canada.

At Chang Tsi, we highly value teamwork and cooperation. We also stress sharing of resources and experience in order to provide our clients with the best services. Their years of practice and extensive experience working with foreign firms, make our attorneys well-qualified to handle the most complicated and challenging legal matters for clients all over the world.