https://www.uspto.gov/patents/search/classification-standards-and-development
Patent Classification | USPTO
Patents technology is classified and indexed for searching by patent examiners using various methodology. On this page, learn about the classification system...
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https://www.wipo.int/publications/en/details.jsp?id=4447&plang=FR
Guide to the International Patent Classification (1995) (6th edition)
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https://www.uspto.gov/web/patents/classification/uspc301/sched301.htm
Search Patent Classification Systems
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https://www.uspto.gov/web/patents/classification/uspc385/defs385.htm
Search Patent Classification Systems
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https://patentclassificationexplorer.com/section/y?view=cpc
Section Y: Emerging Cross-Sectional Technologies | Patent Classification Explorer
Explore patent classification section Y (Emerging Cross-Sectional Technologies). Browse 3 classes, 11 subclasses, and 341 main groups.
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https://www.uspto.gov/web/patents/classification/uspc139/sched139.htm
Search Patent Classification Systems
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https://www.uspto.gov/web/patents/classification/uspc453/sched453.htm
Search Patent Classification Systems
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https://www.uspto.gov/web/patents/classification/uspc293/sched293.htm
Search Patent Classification Systems
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https://www.uspto.gov/web/patents/classification/uspc095/sched095.htm
Search Patent Classification Systems
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https://www.uspto.gov/web/patents/classification/uspc326/sched326.htm
Search Patent Classification Systems
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https://www.uspto.gov/patents/search/classification-standards-and-development?MURL=Classification
Patent Classification | USPTO
Patents technology is classified and indexed for searching by patent examiners using various methodology. On this page, learn about the classification system...
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https://www.iprally.com/
IPRally | AI Patent Search, Review & Classification
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https://iiindex.org/datasets/biofuel_classification/
iiindex - Stanford NLP Model Output for Biofuel Patent Classification
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https://investip.vn/en/vietnam-the-new-version-of-the-international-patent-classification-ipc-2023-01-applied-from-1-january-2023/
Vietnam - The new version of the international patent classification (IPC) (2023.01) applied from 1...
Jul 22, 2025 - The Intellectual Property Office of Vietnam (IPVN) has just issued Notice No. 11220/TB-SHTT dated 20 December 2022 to inform that the IPC Version 2023.01