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U.S. Full Text Patents on Westlaw gives you access to complete U.S. patent coverage from 1790 for granted patents and 2001 for patent applications.
From one screen, you can search patents, abstracts, summaries, and patent applications from across the U.S.
All patents and applications are available in PDF and all dating from 1976 are searchable. Also included are two post-issues databases covering Official Gazette notices (Patent Status Files) and litigation information (LitAlert).
Plus, the convenience of KeyCite Patent Citator will provide a wealth of US patent information in one source including citing and cited references for your patent, all Patent Status File and LitAlert references, and any references from USPQ or Westlaw cases.