We had a wonderful time attending a one-day staff retreat at the Hong Kong Disneyland Resort, including a workshop, Effective Communication through DISC, led by Ms. Gentiana Cheung, a professional consultant from the School of Hotel and Tourism Management of The Chinese University of Hong Kong.

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First ever Invalidation decision on an RNAi Invention patent in China

4 December 2023
Decision 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 […]

Markush claims in China - what can be arbitrarily deleted during invalidation?

4 December 2018
Since 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 […]

The Secret Prior Art Trap: A Case Study on Conflicting Applications in China

13 November 2025
In patent prosecution, the concept of a "conflicting application" or “secret prior art” plays a critical role in determining the patentability of an invention. This article explores the framework for assessing conflicting applications under Chinese patent law, with a comparative perspective on the approaches adopted in the United States. Case Background: The Image Encoding Dispute […]

China’s Newest Examination Guidelines: Novelty and Inventive Step for Compounds (Part II)

29 April 2021
This is Part II of a three-part series summarizing the Examination Guidelines that were released by the CNIPA on January 15, 2021, one year to the date of Phase 1 of the US and China Economic and Trade Agreement. That agreement included specific provisions where China "shall permit pharmaceutical patent applicants to rely on supplemental […]
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