Last Friday (10/3), our Vice President Jennifer Che met with Grace S N Lau of the Institute for Translational Research of HKSTP and the HKSTP community to discuss the fundamentals of IP and how “common” early-stage business/R&D activities can hurt your IP.
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Thin Disclosure but "Bulletproof" Protection: How a Salt Form Patent was Upheld in China Despite Minimal Data
8 January 2026In 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 […]
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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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China Top 10 Patent Re-Examination and Invalidation Cases of 2020 CNIPA Upholds Bayer’s Rivaroxaban Patent
9 June 2021The development of China’s approach to patents, especially those in the pharmaceutical and biotech space, has been fascinating to watch. Those of us who have practiced in the area for a long time have been frustrated by the Chinese patent office’s overly strict rules regarding patentability (e.g., high data support standard and refusal to consider […]
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Markush claims in China - what can be arbitrarily deleted during invalidation?
4 December 2018Since 2010, the China Patent Re-examination Board (PRB) has published the top 10 patent invalidation cases of the year in April of each year. The selection criteria are high social concern, significant impact on the related industry, or involve difficult legal issues and important examination criteria. Below is one of the top 10 cases that […]
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