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Patents

A patent is the formal document issued by PTO following the successful prosecution of a patent application. Typically, a patent application remains pending with the PTO for several years. The time period between filing of a patent application and the issuance of a patent is referred to as "prosecution."

Patents are a useful source of prior art information. A patent concludes with a series of numbered sentences. The numbered sentences, referred to as claims, specify what the inventor(s) regards as the invention.

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