What are kind codes in patent?
The number and/or letter are collectively known as kind codes. The kind code associated with a published patent document describes the type of document and the stage of prosecution when the document was published.
What does a Chinese patent number look like?
Before October 2003, the PRC patent numbers follow the format starting with the characters “ZL” (the acronym of the English transliteration of the term “patent” in Chinese), followed by the first two digits representing the year of application, the third digit representing the type of patent, the four to eight digits …
What does B1 and B2 mean in patent number?
B1: Invention patent (second publication after examination) B2: Supplementary invention patent (second publication after examination)
What is B1 patent?
B1. Patent. No previously published pre-grant publication.
Is it worth filing a patent in China?
It is absolutely crucial to apply for patent protection in China for each and every innovation, even if the launch of the respective product on the Chinese market is not yet on the horizon. It should also be noted that a European registered patent has no legal effect in China.
How many patents does China have?
China has led the world in number of patent filings since 2011, according to the World Intellectual Property Indicators 2020 report from the World Intellectual Property Organization (WIPO). In 2019, WIPO reports, China filed 1.4 million patents, or 43.4 percent of the world’s total patent applications that year.
How are patents classified?
Patent Classification Systems To make searching easier, every patent is classified using a defined scheme. A classification scheme is a system of codes that groups inventions according to technical area, which means similar inventions are grouped under the same classification.
How does the Derwent World Patent Index work?
Subject experts from Derwent’s editorial team analyze, abstract and manually index every patent record, making it easier for you to quickly find the information you need to make informed decisions. In DWPI, the use and advantage of a patent are clearly stated – not buried within an original patent document.
Which is the most comprehensive patent index in the world?
Derwent World Patents Index ™ (DWPI) is the world’s most comprehensive database of enhanced patent information. Subject experts from Derwent’s editorial team analyze, abstract and manually index every patent record, making it easier for you to quickly find the information you need to make informed decisions.
How does the DWPI help you find patents?
DPCI provides an invention-level view of patent and literature citations, forward and backward and allows you to obtain all citations relevant to inventions or patent families. This unique lens on patent data allows you to gather comprehensive patent lists faster, freeing time and resources. DWPI powers global innovation.