Chemical Information Sources/SIRCh/Chemical Patent Searches

SIRCh: Selected Internet Resources for Chemistry

Free Patent or Trademark Databases

 * Cambia's Patent Lens free and open public full text and biologicals patent search comprising USPTO, WO, EP, AU and INPADOC.
 * Google Patents
 * USPTO patent databases (bibliographic, citation, and full text data, 1976-)
 * USPTO Patent Application Information Retrieval Search patent application status by patent number.
 * USPTO Trademarks Page
 * WIPO's PATENTSCOPE database (for international patent applications; front page data w/ drawings, 1997-)
 * esp@cenet (has full pdf images of patents, including US)
 * DEPATISnet (especially good for German patents)
 * FreePatentsOnline Free Patent Searching from US 4000000. Updated as new patents are published by the USPTO.
 * IP Newsflash Search for patent families based on INPADOC data.

Search Sites Requiring Registration

 * Delphion
 * SurfIP (offers access to multiple patent and other sources; International Patent Office of Singapore)
 * WikiPatents (a public community that reviews US patents and pending patent applications)

Commercial Patent Databases

 * Derwent
 * MicroPatent
 * Dialog Corporation
 * Database list
 * STN International
 * STN Patent Forum
 * STN Database List
 * Questel
 * Database Catalogs
 * QPAT
 * Paterra (machine translation of Japanese patent information)
 * PharmaValet (integrates approved drugs and associated patent information from the US and Canada)

Patent Classification, Country, and Kind Codes

 * US Patent Class Definitions and Classification Manual
 * USPTO
 * World Intellectual Property Organization (WIPO)
 * International Classifications
 * IPC ed. 7 (web)
 * Derwent (Thomson):
 * Coding and Classification Database
 * Kind Codes (patent specification descriptors: "type" or "kind" codes)
 * Patent Assignee/Company Codes
 * Chemical Abstracts Service
 * CAS Coverage of Patents
 * Coverage of CA Basic Patents by Year (Country Code and Year List for Patent Countries Covered)
 * Patent Kind Codes for CA Basic and Patent Family Members
 * Netmark
 * Country Codes

Introduction to Patents

 * Information About Patents (Thomson Reuters Derwent)
 * What Every Chemist Should Know About Patents (Le-Nhung McLeland for the ACS) (version on the McLeland Web site)
 * Understanding Intellectual Property
 * WIPO Free Information Products

Miscellaneous

 * U.S. Patent Number Guide (Michael White, Queen's University)
 * Useful Links (European Patent Office)
 * Patents (British Library)
 * Intellectual Property Law: Patents (Yahoo)
 * Patent Information Users' Group
 * Patent Handout from the ACS CINF WORKSHOP: Teaching Chemical Information, August 18, 2002, Boston (Silvia Lee)
 * Select Bibliography on Patents
 * Patents (Swain Chemistry Library, Stanford University)