Report:PatBase/Data Coverage/Patent Coverage/Full Text Coverage/Patent Cooperation Treaty or PCT (WO)
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The Patent Cooperation Treaty Collection
Full text records of published PCT applications (WO documents) are included from October 19, 1978 to date for those documents published in a language that uses the Latin alphabet. Although the World Intellectual Property Organization (WIPO), which oversees the PCT application process, recognizes 8 official languages, [1] in most electronic PCT collections only about 75% of the actual body of PCT documents is represented by electronic full text: the documents filed in English, French, German and Spanish.[2] This is because there has historically been more difficulty digitizing languages written in non-Latin alphabets via OCR. However, as of 2008, PatBase has begun adding non-Latin text data for some PCT documents originally published in non-Latin text.
As of January 2010, Russian-language PCT documents were covered from December 01, 2007, and Japanese-language PCT documents were covered from July 03, 2008. Exact coverage data for Chinese and Korean-language PCT documents was not available, although experimental searches showed that some original language titles and abstracts were present for records in at least the Chinese language.
See the non-Latin text section for more information on searching the non-Latin data coverage in PatBase.
Editor's Note:The addition of non-Latin text PCT records is a notable step forward for this collection, and may raise the bar on the coverage expectations for PCT collections in the future. This data also represents unique content for PatBase over other commercial systems. The free search system Patent Lens also offers some electronic text for non-Latin PCT records in Chinese and Japanese.
Like other search providers, PatBase’s PCT collection was produced by OCR software; some garbled characters may exist in the electronic text.
Sources
- ↑ The 8 official languages accepted by WIPO are English, French, German, Spanish, Japanese, Chinese, Russian, and Arabic. Data obtained from Rule 48 under the Patent Cooperation Treaty, http://www.wipo.int/pct/en/texts/rules/r48.htm. Accessed on October 28, 2008.
- ↑ "The International Patent System Yearly Review; Developments and Performance in 2007."(2007) The World Intellectual Property Organization. http://www.wipo.int/pct/en/activity/pct_2007.pdf. Accessed on October 7, 2008.
