How often is the USPC Index updated?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 9 Rules 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. The USPC Index is regularly updated to ensure its accuracy and relevance. As stated in MPEP 902.01(a) : “The Index is regularly updated.” This regular updating process helps maintain the Index’s usefulness as a tool for patent classification and searching. Users should always refer to the most recent version of the Index when conducting their searches. Related Rules from the Manual of Patent Examining Procedure 9 rules Collapse Index Must Be Regularly Updated MPEP 902.01(a) Index to U.S. Patent Classification System Used for Initial Entry MPEP 902.01(a) Classification Orders Affect Existing Definitions MPEP 902.02 Recommended Examiner Definitions Must Be Updated Periodically MPEP 902.02 Recommended Classification Orders Available Online for USPTO Personnel MPEP 902.02 Classification Home Page Must Be Accessible via Toolkit MPEP 902.02 Index Not Exhaustive for USPC Search MPEP 902.01(a) Recommended Review Class Schedules and Subclasses Even When Index Citation Seems Specific MPEP 902.01(a) Recommended Suggestions for Index Changes Directed to TCs MPEP 902.01(a) Recommended Other Related FAQs 5 FAQs Collapse How comprehensive is the USPC Index? How can I suggest changes to the USPC Index? Where can USPTO personnel access the USPC Index? What is the Index to the U.S. Patent Classification System? How can patent examiners access the Classification Home Page?