Dr. Jacqueline Lui, President of Eagle IP Group, gave an in-house seminar titled “IP Due Diligence: The Key to Realistic Valuation of Technology in Transactions” at The Chamber of Hong Kong Listed Companies.

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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 […]

How to Protect a Crystal Form (Polymorph) Patent in China

4 June 2025
Crystalline forms are critical to pharmaceutical patents, offering extended protection for improved stability, bioavailability, or manufacturability. However, securing such patents in China has grown increasingly difficult due to the China National Intellectual Property Administration (CNIPA)’s strict patentability criteria. Unlike the U.S. or Europe, where structural novelty or problem-solving utility may suffice, China demands quantifiable evidence of […]

CNIPA further clarifies how it counts “delays” when calculating Patent Term Adjustment (PTA) in the new Draft Examination Guidelines and how it affects international applicants

12 April 2023
At the end of October 2022, the China National Intellectual Property Administration (CNIPA) released a new draft amendment of the Patent Examination Guidelines1 (hereinafter referred to as the “New Draft”) to the new Chinese Patent Law that came into effect in 2021. We highlight two key amendments below. 1. The starting date for calculating PTA […]

Inventive Step for an Enantiomer over a Racemate: “L-ornidazole” Patent Invalidation Case

27 November 2023
Each year, China’s Supreme People’s Court (SPC) issues its annual “Judgment Digests”, which includes a list of “48 typical cases” highlighting representative SPC decisions in the previous year. The Judgment Digests help us understand more about the SPC’s judicial ideology, trial concepts, and adjudication methods in dealing with difficult and sophisticated legal issues as well […]
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