In theory China’s inventorship standard is similar to others around the world. An inventor is anyone who “makes creative contributions to the substantive features” of an invention. But what does this mean, and how does one apply this standard? Up to this point, this issue hasn’t really been litigated much in China (at least according to publicly available records). We finally have an important case (from the top!) that clarifies this issue. We analyse a binding judgment by the Intellectual Property Court of the Supreme People’s Court (SPC) of China1. It clarifies China’s applicable inventorship standards and the potential legal consequences of omitting qualified inventors. For U.S. companies conducting R&D…
- China, Courts, inventors, inventorship, Patent, patent application, Patent Law, Supreme People's Court
- China, China Patent Office, CNIPA, data, Invalidation, Patent, Patent Law, Patent Re-examination Board, Patentability, Pharma, Support Requirements
How to Protect a Crystal Form (Polymorph) Patent in China
Crystalline forms are critical to pharmaceutical patents, offering extended protection for improved stability, bioavailability, or manufacturability. However, securing such patents in China has grown increasingly difficult due to the China National Intellectual Property Administration (CNIPA)’s strict patentability criteria. Unlike the U.S. or Europe, where structural novelty or problem-solving utility may suffice, China demands quantifiable evidence of superiority over prior art forms and rejects patents based on routine screening alone. Recent decisions, like the invalidation of fruquintinib Crystal Form I, highlight common pitfalls: insufficient comparative data, incremental technical effects, and failures to preempt obviousness challenges. With China’s pharmaceutical market surging and secondary patents under heightened scrutiny, companies must strategically align their IP strategies…
- China, China Patent Office, CNIPA, Key decisions, parameter feature, Patent, patent application, Patent Law
Why Do Examiners Fail to Recognize the Importance of my “Parameter Features”?
The Impact of Parameter Features on Inventiveness ”Parameter features” – numerical or mathematical expressions that define the quantity or physical properties of a subject – frequently appear as technical features within a claim. Often described as numerical ranges or measurements, they frequently play a critical role in addressing technical problems. However, in practice, Examiners and courts often disregard or devalue the inventive contribution of these “parameter features”, leading to considerable confusion among inventors. Recently, the China National Intellectual Property Administration (CNIPA) released the 2023 Compilation of Key Decisions in Patent Reexamination and Invalidation Cases. Among the cases discussed, two decisions (Cases No. 24 and 25) provide valuable insights into how…


