Patent

	Requirement for Requesting PTE and Noteworthy Points in Calculation
	2025-12-04
	Wenhui ZHANG Chinese Patent Attorney I. Introduction The fourth amendment to the Patent Law of China enacted as of June 1, 2021 introduced the compensation on the term of patent. Under Article 42.2 of the Patent Law, Where an invention pate
	Effective Rebuttal on Multiple References Cited for an Individual/Single Distinguishing Feature
	2025-11-20
	Wenwen DAI Chinese Patent Attorney I. Introduction The Guidelines for Patent Examination stipulates that generally the determination of whether or not the claimed invention is obvious in view of the prior art may follow the three-step metho
	Comparison of IP5 Restrictions to Corrections in Patent Invalidation Procedure Concerning Technical Features Not Included
	2025-10-27
	Xiaowen SONG Chinese Patent Attorney It is widely recognized that restrictions on corrections made in the patent invalidation procedure before the CNIPA have been slightly loosened in recent years. However, the principle that a technical fe
	Preliminary Discussion on Inventiveness of Patent Applications Involving Algorithmic Features
	2025-09-15
	Dongyu LI Patent Attorney I. Introduction In recent years, technologies such as artificial intelligence, Internet Plus, big data, and blockchain have advanced at a breathtaking pace, generating an urgent need to protect innovative achieveme
	The Invalidity Declaration System for Chinese Design Patents
	2025-07-18
	Baoyu ZHANG Chinese Patent Attorney China implements a preliminary examination system for design patent applications. Due to its relatively lenient criteria, some design patents that fail to meet the granting requirements may still be appro
	The evaluation report for design patent rights
	2025-07-18
	Baoyu ZHANG Chinese Patent Attorney In China, utility models and design patents adopt a preliminary examination system, making them less stable than invention patents. As a supplement to the preliminary examination system, China has establi
	Introduction to the Combined Design Application System in China
	2025-07-18
	Baoyu ZHANG Chinese Patent Attorney Under Article 31, Paragraph 2 of the Chinese Patent Law , two or more similar designs for the same product, or two or more designs for products that belong to the same category and are sold or used as a s
	The Do's and Don'ts of Drawings or Photographs of Chinese Design Patents
	2025-07-18
	Baoyu ZHANG Chinese Patent Attorney Drawings or photographs are crucial and central elements in a design patent application. Article 64(2) of Chinas Patent Law provides that for the patent right for design, the scope of protection shall be
	Application Procedure and Important Time Limits for Design Patents in China
	2025-06-09
	Baoyu ZHANG Chinese Patent Attorney There are three types of patent in China: invention, utility model, and design patent. Design patents are favored by some applicants because of their short grant period and the fact that they protect the
	Design Patent Clarity Requirements in China
	2025-06-09
	Baoyu ZHANG Chinese Patent Attorney Article 27(2) of the Chinese Patent Law provides that the relevant drawings or photographs submitted by the applicant shall clearly indicate the design of the product for which patent protection is sought

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