Go to MPEP - Table of Contents
902.03(b) Patent Classification Home Page on the USPTO Intranet [R-3] - 900 Prior Art, Classification, >and< Search
902.03(b) Patent Classification Home Page on the USPTO Intranet [R-3]
The address for the Patent Classification Home Page on the USPTO Intranet is **>http://ptoweb:8081/<. The Classification Home Page is also accessible from the **>desktop via the Patent Examiner's Toolkit<. The site is the * clearinghouse for classification information published in **>Hyper-Text Mark-up Language< (HTML) and Adobe Acrobat Portable Document Format (PDF) by the U.S. Patent and Trademark Office (USPTO). ** Examiners and the public are provided with access to identical information for the Index, Schedules>,< and Definitions.
The classification *>Intranet< site also includes links to information such as USPC-to-IPC(7) Concordance, IPC (7) and IPC (6) Schedules, IPC(7) Guide, WIPO Handbook on Industrial Property Information and Documentation*>and to national (U.S.) information such as< Classification System Overview, Classification Bulletins, and the Patent Classification Retrieval system (PCRS).
The PCRS provides Original (OR) and Cross-Reference (XR) classification information for individual patents and listings of patents contained in subclasses. This data is updated bimonthly with new issues, withdrawn patents and reclassifications.