Patent

Is “Comparable” the New “Unexpected”? China’s SPC Relaxes Inventive Step Standard for Breakthrough Therapeutics

2026年7月14日

How the Supreme People's Court Established a New Benchmark for Unexpected Technical Effects in a Landmark Diabetic Nephropathy Case Proving inventive step for pharmaceutical compounds, especially a second medical use, remains one of the most challenging aspects of patent prosecution in China. When the prior art discloses a compound's general therapeutic properties, how can an […]

No More Hindsight Bias: China’s Supreme People's Court Reins in Patent Inventiveness Assessments

2026年6月25日

For foreign applicants navigating patent litigation or invalidation in China, a common frustration is hindsight bias. Too often, CNIPA or lower courts strip down a patent into isolated technical features, find those features across disparate prior art references, and declare the invention to be "obvious". To counter such hindsight reasoning, the core criterion has always […]

IP Update: China’s Supreme People’s Court Issues First Public Decision Defining China’s Inventorship Standard

2026年6月1日

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 […]

Please “Mind the Traps”: Four Common Misconceptions About Hong Kong Patents

2026年4月13日

For many foreign companies interested in the broader Asian market, Hong Kong is a strategically important jurisdiction. However, because of its unique legal framework, domestic and foreign companies alike are confused by how IP protection works in Hong Kong. Missteps in such understanding can lead to critical, costly "gaps" in IP protection. To safeguard innovations […]

A Stratification Too Far? How the CNIPA Draws the Line on Patient Subgroups in a Recent Precision Medicine Invalidation Case

2026年2月27日

Precision medicine is rapidly transforming the global healthcare landscape, providing more effective therapies and better patient outcomes through targeted solutions. As therapeutics move away from the traditional “one-size-fits-all” model, unique challenges are presented in the patent examination process. The 2024 Top 10 Patent Re-examination and Invalidation case highlighted below provides further insight into how the […]

Thin Disclosure but "Bulletproof" Protection: How a Salt Form Patent was Upheld in China Despite Minimal Data

2026年1月8日

In China, innovative drug companies typically rely on their initial composition of matter patents to block out competitors. Other “follow-on” IP, such as those directed towards formulations, polymorphs, and salt forms, are often regarded as less likely to survive invalidation challenges, especially in China where the standard of “person skilled in the art” is so […]

From Faces to Football Fields: How Applying AI Models to Different Application Fields Can Prove Inventive in China

2025年10月21日

As AI models become versatile and adaptable across multiple contexts and industries, questions about inventive step sit at the heart of patent examination in China. The 2023 Patent Examination Guidelines (hereinafter referred to as 'the Guidelines') included several sessions dedicated to explaining how inventive step should be examined for AI-related inventions, featuring examples related to […]

When Standards Evolve: How China Judges Inventiveness in Next-Gen Tech Patents

2025年9月30日

Starting in 2023, Datang Mobile, one of the key players in China’s telecom standardization efforts, initiated infringement proceedings against Samsung in China, Germany, and the US. Samsung responded by filing multiple invalidation petitions in several jurisdictions, including China, the United States, and Europe. The case discussed below is one of above-mentioned invalidation cases in China, […]

Obviousness: can features from different categories of products be combined to invalidate a design patent?

2025年9月18日

Introduction “I have a tank, I have a gun—boom! Tank gun?” Each year the CNIPA releases a list of Top Ten Patent Re-examination and Invalidation Cases. These cases are meant to be guiding cases, showcasing exemplary real-world decisions that clarify certain aspects of the law. Over the next several months we will be highlighting many […]

How to Protect a Crystal Form (Polymorph) Patent in China

2025年6月4日

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 […]

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