The U.S. Patent and Trademark Office is a federal agency of the U. S. Department of Commerce and has a strong website featuring a search engine to help identify patents and trademarks. It also contains full text of all U.S. patents, including the art work. Issued patents are available full-text since 1976, full-page images since 1790. Patent applications are available since 15 March 2001. Also available here is access to the Trademark Electronic Search System, TESS, which contains more than 3 million pending, registered and dead federal trademarks.
Princeton University is not a depository library for the Patent Office. The two patent depositories in New Jersey are the Newark Public Library which holds patents on microfilm from 1790 to the present, and the Library of Science and Medicine of Rutgers University whose microfilm patent holdings begin with 1976. Staff in these depository collections can help in identifying and locating patents.
The following publications can be useful for research on patents and trademarks. Some are available in print and others are available in an online version.
(DOCS) C 21.12/2: (CURRENT VOLUME ONLY)
Also available in an online version at: http://www.uspto.gov/go/classification/uspcindex/indextouspc.htm
Alphabetical list of subject headings referring to specific classes and subclasses; this is the best place to start for those unfamiliar with patent classification.
Available in an online version at: http://www.uspto.gov/web/patents/classification/
Lists all classes and subclasses of inventions. Includes subject index.
(DOCSM) C 21.3/2: [microform]
Also available in an online verstion at: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/def/index.htm
Describes new and revised classes and subclasses and changes in patent classification.
1872-1959 (RECAP) 9051.922.3
1960-January 1971 (RECAP) MICROFILM S00412
February 1971-January 1975 (RECAP) MICROFILM S00412
February 1971-February 1975 (RECAP) MICROFILM S00175
The current 52 weeks is available and maintained in an online version at: http://www.uspto.gov/web/patents/patog/
1926-1973 (RECAP) 9051.922.001
1974-2002 (ANNEX B) T223 .D3
2001, 2003-2009 (DOCS) C 21.5/7 [cd-rom]
Annual index to the Official Gazette: can be searched by names of patentees and assignees, by class and sub class number, and class title.
(DR, Trustee Reading Room Reference) T223 .F4 A57 (CURRENT VOLUME). Earlier editions located in Recap.
Guide which relates U.S. patent classification system to international patent classification
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PLEASE NOTE: While the general public is welcome to use depository materials free of charge, many of our U.S. Government resources, including many of the resources listed in this research guide, are not depository materials and may only be used by Princeton University students, faculty, and staff. This includes most of the electronic resources such as Proquest Congressional and Hein Online.
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