Report:QPAT/Data Coverage/Patent Coverage/Full Text Coverage/Patent Cooperation Treaty or PCT (WO)
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|As of January 1, 2013, both QPAT and PatentExaminer have been discontinued, and they have been replaced by the Orbit.com portal.|
The Patent Cooperation Treaty Collection
Questel-Orbit obtains published PCT data from data producer Univentio, in partnership with the World Intellectual Property Organization (WIPO). These records should include a representative image where available, although the completeness of this coverage is unknown.
The PCTFULL file contains full text records for those PCT applications published in English, French, German or Spanish (update: as of March 2010, it also contains English machine translations for those records published in Russian, Chinese, Japanese, and Korean). Records were constructed using Optical Character Recognition (OCR) technology. Coverage begins in 1978.
These full text files do not contain updated classification data. They only contain the classification data published for the record at time of issue. Since IPC classifications have gone through multiple revision attempts, most recently the IPC-8 revision in 2006, searching by classification in these files will not be using the most recent data (update: as of October 2009, Questel's FamPat family file contains the full text of Questel's WO/PCT collection, so an updated classification search can now be run simultaneously with a full text search).
Similar to other full text search services, QPAT’s data source excludes documents published in the additional PCT publication languages of Chinese, Japanese, Arabic, or Russian. Unfortunately, these languages represent a growing number of PCT applications: according to WIPO’s 2006 annual review, 19.4% of applications in 2006 were filed in Chinese, Japanese, or Russian.
In addition, the loaded full-text files have another limitation: because they have been created by OCR software, they will contain some garbled text, and keyword searching should be undertaken with extra caution.