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Brief Introduction to Application of Doctrine of Estoppel in China

Author: Yujie Jin & Jing Qu

Under the doctrine of estoppel (DOE), a patentee may not recapture in patent litigation what was abandoned through either amendment or observation during prosecution or patent invalidation proceedings. Below is a brief introduction to a few gu...

Drafting the Best Functional Technical Features in China

Author: Lin Li & Yali Shao

When drafting claims of a patent application for an invention, functional technical features are often inevitable or irreplaceable, especially when the invention is partly or completely implemented by computer programs. How to best protect an ...

Overview of Trade Secret

Author: Dr. Ke MOU, Liu Shen & Associates

As an important form of intellectual properties, trade secret is attracting more and more attentions, especially for operational information such as customer list and technical information within the software filed. In China, trade secr...

Claim construction in patent infringement litigation

Author: Juan Wang & Jinlin Chen

Claim construction to determine the scope of protection of a patent claim is a critical element of patent infringement litigation. The Patent Law sets out the basic principles of claim construction: the scope of protection shall be determined ...

Patent issues for life science companies in China

Author: Wenhui Zhang & Zongliang (Stephen) Zou

By Wenhui Zhang and Zongliang (Stephen) Zou, Liu Shen & Associates Chinahas become one of the most important markets for life science companies, not only because it has the largest population in the world and its economy has grown rapi...