Citation search and analysis tools are available in many subscription patent databases;
PatBase allows users to
view both patent and non-patent literature citations for entire patent families, and users can view the citations graphically through “citation trees.” A
July 2011 update to PatBase added the additional features of a citation timeline and citation line graph.
Wouldn’t it be fantastic if there was a patent citation tool, with similar functions to the PatBase citation features, that was also free? Thanks to the EPO, JPO, and USPTO, such a tool now exists. The Common Citation Document (CCD) allows users to view documents cited by the EPO, USPTO, JPO, and PCT citations for patent families related to a specific patent application. The CCD application includes the capability to view full-text of cited patent documents, the division of cited documents in a list by source of citation and connection to a specific patent application, the category of relevance for EPO citations, a compilation of “classifications and fields searched” for an entire patent family, and a timeline view to illustrate the time span for a collection of citations.
Read on for a detailed description of the coverage, features, and functions of the CCD application!
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Filed under: Patent Search News, Patent Search Systems, Search Tips and Tricks | Tagged: CCD, citation searching, EPO, JPO, PCT, USPTO | 2 Comments »