CHENG, Danchen

Patent Attorney


Electrooptical Technology , Mechanical Engineering , Semiconductor

TEL: 86-10-6268 1616

FAX: 86-10-6268 1818




Optical Science & Engineering, Fudan University, Bachelor Degree

Applied Physics, Tongji University, Master Degree


Ms. Cheng joined Liu, Shen & Associates in October, 2016 and became a qualified patent attorney in 2017. She specializes in patent drafting, prosecution, re-examination, patent analysis on relevance and validity, and client counseling with a focus on semiconductor, electrooptical technology, display device, quantum dot, mechanical engineering, etc.


Ms. Cheng received training from Y.P.LEE & MOCK, South Korea from May to August in 2023.


Ms. Cheng worked at China Aerospace Science and Technology Corporation as a system engineer from July, 2013 to September, 2016, involving in the research and development of relevant components of the spaceship and the space station.


Representative Patent Analysis Projects:

-      Conducting patent analysis on relevance and validity for a well-known multinational enterprise

-      Conducting patent analysis on allowability of patent applications for a well-known Internet enterprise

Representative Research:

In 2021, Ms. Cheng participated in the project of revision and demonstration of the guidelines for patent examination, entrusted by China National Intellectual Property Administration, and was specifically responsible for the revision and demonstration of contents related to partial design, with a draft of proposed revisions and a written demonstration report as the work products.

Representative Publications:

-      “The effect of China’s patent law on partial design applications”, Managing IP, Autumn 2022, Issue 295

-      New Development of Deferral of Examination for Invention Application in China”, Liu-Shen newsletter, November 2023




All-China Patent Agents Association (ACPAA)