The European Patent Office (EPO), established on October 7, 1977, under the European Patent Convention (EPC), is an intergovernmental organization responsible for examining and granting European patents that can take effect in 42 countries.

  The EPO ranks among the world's most powerful and modern patent offices, possessing the most comprehensive patent documentation resources, advanced patent information retrieval systems, and extensive expertise in patent examination, appeal procedures, and legal research. The China National Intellectual Property Administration (CNIPA) has engaged in extensive exchanges with the EPO regarding document collection, retrieval systems, examiner training, and information products.

  CnOpenData presents European Patent Office patent data, encompassing essential fields such as patent applicant(s), inventor(s), IPC classification codes, CPC classification codes, C-sets classification codes, application date, publication date, and publication number sets, thereby supporting related research.

Time Coverage

As of 2022 (subject to updates as required)

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Data Update Frequency

Annual updates