Dr. Jacqueline Lui, Managing Director of Eagle IP Limited, gave a talk on “Patenting natural matters after Mayo and Myriad” at the 6th Annual Intellectual Property Seminar.

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What is the difference between an Invention Patent and a Utility Model Patent?

13 August 2021
There are two types of patent protection in China. Invention patents (similar to a US utility patent) have a term of 20 years from the date of filing and may be granted for both methods and products. Utility model patents (similar to a petty patent) may be granted in China for technical solutions that relate […]

No % homology? How to craft allowable claim scope around sequences to comply with China’s strict written description requirements

23 November 2018
Since 2010, the 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 discusses […]

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

8 January 2026
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 […]

How the Chinese Patent Office Rejected a Plate-Making Method Based on Food Safety Law

19 October 2022
Previously we published an article about CNIPA rejecting a patent application claiming a food that could also be used to treat or prevent diseases based on the food’s alleged non-compliance with Food Safety Law. China’s Food Safety Law includes a provision which states any use of a composition as a food must be strictly separated […]
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