Patents are an important and useful form of literature. The most commonly given reason for performing a patent search is a patentability search for "prior art". However, patent literature can be useful for many other reasons, including:
- To discover new research. Patent information is often available before scholarly literature on a specific technology, if it is published in scholarly literature at all. Corporations rarely publish research outside of patents if it is not publicly funded.
- Since corporations rarely publish their research elsewhere, patents are often the best way to find out about a company's researchers and research activities.
- To find out how something works.
- Patents are highly detailed explanations of a technology or invention. This level of detail is generally not available anywhere else.
- Relevant patents and other related literature are referenced in the very beginning of each patent. Because so much research is done by an inventor and patent examiner prior to patenting, patents are an excellent gateway to literature on a particular technology or invention.
- Patents are historically significant primary documents covering over two centuries of U.S. innovation.