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Intellectual Property LibGuide

US Patent Searches

Print sources offer an excellent introduction to patent searching. Selected print materials located in the Coleman Karesh Law Library collection are listed below.

Classification of Patents and Patent Search Resources for Inventors

Patent searchers will often start a search by looking up the places where an invention is classified in order to make a more thorough and effective search. At other times, patent searchers will meet with patent examiners in order to obtain a field of search.

United State Patent and Trademark Databases for Patent Searching

"Patents from 1790 through 1975 are searchable only by Issue Date, Patent Number, and Current US Classification." Listed below are some of the primary databases for doing patent searching through the USPTO:

USPTO Patent Application Status Search

The status of a patent application can be checked through the Patent Application Information Retrieval (PAIR) System.

Patent Search Databases

Patent searchers must deal with an enormous range of potentially important information sources.  However, many patent search services limit searches to the patent databases. Additional sources of relevant scientific information include trade magazines and university scientific databases.