Report:FreePatentsOnline/Data Coverage/Patent Coverage/Full Text Coverage/Patent Cooperation Treaty or PCT (WO)
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The Patent Cooperation Treaty Collection
Full text data for Patent Cooperation Treaty (WO/PCT) applications dates back to the first PCT application, covering from October 19, 1978 to date. There appear to be no gaps in coverage and PDF versions of all applications are available.
As with all OCR data, users should be aware that the full text of the PCT collection may contain scanning errors. For completeness it is recommended that users utilize many search strategies and do not rely on keyword searching alone.