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The International Patent Classification (IPC) is a hierarchical patent classification system used in over 100 countries to classify the content of patents in a uniform manner. It was created under the Strasbourg Agreement (1971), one of a number of treaties administered by the World Intellectual Property Organization (WIPO).
The Strasbourg Agreement Concerning the International Patent Classification (or IPC), also known as the IPC Agreement, is an international treaty that established a common classification for patents for invention, inventors' certificates, utility models and utility certificates, known as the "International Patent Classification" (IPC). [6]
A patent classification is a system for examiners of patent offices or other people to categorize (code) documents, such as published patent applications, according to the technical features of their content.
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The subclass is then followed by a 1- to 4-digit "group" number, an oblique stroke and a number of at least two digits representing a "main group" ("00") or "subgroup". A patent examiner assigns a classification to the patent application or other document at the most detailed level which is applicable to its contents.
IPC is a trade association whose aim is to standardize the assembly and production requirements of electronic equipment and assemblies. IPC is headquartered in Bannockburn, Illinois , United States with additional offices in Washington, D.C. Atlanta, Ga. , and Miami, Fla. in the United States, and overseas offices in China , Japan , Thailand ...
The INID numbers are those within brackets, such as "(10)" before the patent number. INID is an acronym for Internationally agreed Numbers for the Identification of (bibliographic) Data . [ 1 ] INID codes are used by patent offices worldwide for indicating specific bibliographic data items on the title pages of patents and patent application ...
These numbers follow the format 京ICP备04123456号 or 京ICP备2021123456号 (in this example, "京" represents Beijing, "备" means "record" and "号" means "number"). For a website with multiple domain names, the filing number will use "-n" suffix, ex. 京ICP备2021123456号-2 means this is the second filing domain name for this website.