Dr. H.C. Lui, Director of Eagle IP Limited, participated the 7th Asia Solar PV Industry Exhibition which it held at Shanghai World Expo Exhibition & Convention Centre.
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Do Promotional Marketing Materials Constitute an “Offer for Sale” under Chinese Patent Law? Bayer IP GmbH v. Nanjing Hang Seng Pharmaceutical
12 December 2023Bayer's blockbuster drug Rivaroxaban has seen its share of patent litigations in China, several of which are big enough to be listed as Top 10 IP cases or 50 Representative IP cases. We summarized an invalidation case back in 2020 where all of Bayer’s claims directed towards the compound were upheld. Recently, another Rivaroxaban case […]
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Obviousness: can features from different categories of products be combined to invalidate a design patent?
18 September 2025Introduction “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 […]
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What is the difference between an Invention Patent and a Utility Model Patent?
13 August 2021There 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 […]
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Compositions Limited by Use: A Cautionary Tale
26 October 2022Section 4.2.3, Part II Chapter 10 of the CNIPA’s Examination Guidelines (“Guidelines”) stipulates that if the specification only discloses one property or use of a composition, the composition claim shall be drafted as a “composition limited by the function or the use”. Furthermore, it specifically states that “most pharmaceutical claims shall be drafted as claims […]
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