The technical information of patent information disclosure involves almost all technical fields of human life activities. According to WIPO statistics, 90%-95% of the world's inventions can be found in patent documents every year, and many inventions are only disclosed through patent documents, and no other scientific and technological documents have been reported. The United States Patent and Trademark Office conducted a survey in the 1970s and found that 70% of the contents had not been published in non-patent literature. It can be seen that patent literature is the source of many technical information. If we don't pay attention to the patent literature, we may lose the opportunity to obtain this information.
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Because most countries (including China) adopt the principle of prior application and the system of early disclosure and delayed examination, it urges inventors to file patent applications for their inventions as soon as possible, thus making patent documents the fastest information source for reporting new technologies.
According to statistics, the technology reflected in patent documents is generally five years earlier than other documents. Television technology, for example, was first published in patent literature at 1923, and was only seen in other publications at 1928. Aircraft jet technology, 1936, was found in patent literature, and it was not seen in other publications until 1946.