Jiangang ZHANG

Mr。 Zhang used to teach in Beijing Technology University In 2003-2005, and had undertaken several national scientific research projects。 He provided numerous lecturers in many training courses and symposiums organized by SIPO and ACPAA and has more than 10 academic dissertations published on papers。

He joined the firm in 2005 and mainly focuses in patent application, patent invalidation, infringement and administrative litigation, IP strategy, and IP early warning analysis etc. He has applied for a number of invention patents, and obtained rich experiences from his scientific research work.

He has handled more than 500 patent invalidation and patent dispute cases, as well as more than 100 patent warnings and corporate patent strategy cases。


  • B。S。 in Material Processing at Shandong University;
  • M.E. in Material Processing at Shandong University.

Field of practice

Patent invalidation in the fields of machinery, materials, energy and electrical appliances, patent disputes, patent warning, corporate intellectual property strategy, trademark review and trademark disputes.


  • Successfully represented in Hanvon Technology against WACOM
  • Successfully represented Zhongshan Broad Ocean Electric Co., Ltd. VS Japan Electric Power Shibaura (Zhejiang) Co., Ltd. Patent dispute for “Stator assembly for plastic brushless motor”
  • Successfully represented Zhejiang Ouye Sword Co., Ltd of “No.1 Saber” involving invalidation litigation


  • Successfully represented Xu Zhanqing VS Japan Kubota "combined harvester", "walking paddy field working machine", "water paddy working machine", "walking rice transplanter" series patent dispute cases

        Sunshine Intellectual Property Group

  • Tel: +86-10-82870718 / +86-10-84065599 


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    Address:5F,Tower A, Zhongguancun Intellectual Property Building, No.21, A, Haidian South Road, Haidian District, Beijing, P.R.China, 10080

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