Dr. Jacqueline Lui, President of Eagle IP Limited, joined the IPO Fact-Finding Trip to China (Beijing), organized by the IPO Asian Practice Committee.
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How to Protect a Crystal Form (Polymorph) Patent in China
4 June 2025Crystalline 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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CHINA: How Prohibiting "Illegal" Inventions Runs into Food Safety Law
22 October 2021Chinese Patent Law has an interesting provision that specifically prohibits patent protection on “illegal” or “immoral” inventions. What does this mean, exactly? According to Article 5.1 of the Chinese Patent Law, “no patent shall be granted for an invention that contravenes any law or social moral or that is detrimental to public interests.” On its […]
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FOLLOW UP: Amendments to the China Patent Examination Guidelines in 2022 – Part 1: New rules for designs in view of China signing onto the Hague Agreement
4 January 2023Since the publication of our earlier article about China signing onto the Hague Agreement, some of our Hong Kong clients have expressed interest in taking advantage of the Hague international design application system, i.e., filing a Hague international design application with the CNIPA (Chinese National Intellectual Property Administration) as a receiving office (RO). Up until […]
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What Microsoft’s Recent Patent Invalidation Case in China Teaches Us About User Interface Patents
29 January 2026Each year the CNIPA publishes its Top Ten Patent Re-examination and Invalidation Cases for the previous year. These cases are meant to be guiding cases, showcasing exemplary real-world decisions that clarify certain aspects of the law. Today we’ll be sharing about one of the Top 10 Invalidation Cases in 2024 involving Microsoft (China) Co., Ltd. […]
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