Mr. Philip Lyren, Principal of Eagle IP Limited, gave a talk on “Patent Protection: Should you build a patent portfolio?” at the Wolters Kluwer Annual CPD Fast-Track Conference.
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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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First ever Invalidation decision on an RNAi Invention patent in China
4 December 2023Decision on Examination of Request for Invalidation (No. 58530) In one of China’s Top 10 Patent Re-examination / Invalidation cases of 2022, an invalidation decision on a patent claiming Hepatitis B Virus (HBV) RNAi compositions (No. 58530) by the Patent Re-examination Board (the “Board”) sheds light on the standard for post filing data for rejections […]
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A More Detailed Overview of China’s Patent Term Extension (PTE) System
17 June 2024Although PTE has been in the Chinese Patent Law since the 4th Amendment of the law came into effect June 1, 2021, we didn’t really know the exact details of how it operated until the Implementation Regulations and Examination Guidelines (“Implementation Regulations”) were finally released in December 2023. New Rules 77-84 in the Implementation Regulations […]
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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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