Report:TotalPatent/Data Coverage/Patent Coverage/Citation Coverage
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For the purpose of this article, the term "citation" refers to a patent citation. To get more information on how we use the term citation, please see the citations article.
Citation coverage in TotalPatent is said to come from a “variety of sources,” but it's probably derived largely from the EPO’s INPADOC bibliographic file, which includes citation data for at least United States (US), United Kingdom (GB), European Patent Office (EP), Australia (AU), Germany (DE), Japan (JP) and Patent Cooperation Treaty (WO/PCT) documents. The LexisNexis website also mentions that TotalPatent obtains citation data from the Russian Patent Office (RU) and the Chinese Patent Office (SIPO). Forward citation relationships are constructed "on the fly."
Non-patent citations are included in TotalPatent. The system currently links from non-patent citations to the document abstracts (when available) in Scopus, a database of scientific articles also owned by parent company Reed Elsevier, Inc.
When reviewing results, the cited and citing patents are presented in a table format (which displays the publication number, date, title, applicant/assignee, and who the citation was cited by). Patent numbers and document titles are hyperlinked to their corresponding records in TotalPatent, and selecting the "applicant/assignee" name automatically conducts a search for all documents corresponding to that specific assignee. The figure below shows an example of citation data as displayed in the system.
Backward citation data in TotalPatent may come with one of two types of supplementary information: relevancy indicators (for EP and WO records), used by examiners to show the reason for the citation (e.g. a citation could have weight against the novelty of the claimed invention, or it could be cited for technical background), and source indicators (for US documents after 2001), which show who originally cited the document (e.g. the examiner, applicant or other entity). The figure below shows an example of citations on a European patent document, which are shown with relevancy indicators.
TotalPatent previously used to define the meaning of the relevancy indicators (i.e. "Particularly relavent if taken alone (X)" or "Technological background (A)"), but the meanings of the relevancy indicators no longer appear to be included in the "Cited By" column. Only the relevancy indicator code is listed (i.e. (X), (Y), or (A)), along with where the citation originates from (i.e. "Originates from the search report"). It is disappointing that this extra information is no longer included, but this may be due to the space constraints of the table cells.
- ↑ "Russian Patent Source Information." LexisNexis website, http://help.lexisnexis.com/tabula-rasa/totalpatent/patentsourcetips_ru-field?lbu=US&locale=en_US&audience=online. Accessed May 11, 2012.
- ↑ "Chinese Patent Source Information." LexisNexis website, http://help.lexisnexis.com/tabula-rasa/totalpatent/patentsourcetips_cn-field?lbu=US&locale=en_US&audience=all. Accessed May 11, 2012.
- ↑ Correspondence with TotalPatent Representative via email. Received May 14, 2012.
- ↑ "LexisNexis TotalPatent Becomes First Patent Research Service to Provide Direct Links to Elsevier Journal Abstracts." Published October 27, 2010. LexisNexis website, http://www.lexisnexis.com/media/press-release.aspx?id=1288205942197496. Accessed May 11, 2012.