What are warnings in CPC schemes?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 6 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. Warnings in CPC (Cooperative Patent Classification) schemes are used to signal deviations from the International Patent Classification (IPC) or indicate incomplete classification. As stated in MPEP 905.01(a)(3) : “A warning is used in CPC schemes for signaling deviations from IPC or incomplete classification.” These warnings serve as important indicators for patent examiners and researchers to understand potential differences between CPC and IPC classifications. Related Rules from the Manual of Patent Examining Procedure 6 rules Collapse Multipart Title Describes Separate Information Entities MPEP 905.01(a) Recommended Multipart Title Separated by Semicolon MPEP 905.01(a) Recommended Subclass Covers Refrigerators, Cold Rooms, Ice Boxes, and Other Cooling Devices MPEP 905.01(a) Recommended Types of Secrecy Orders for Patent Applications MPEP 120 Type II Secrecy Order for Patent Applications with Classified Data MPEP 120 Type I Secrecy Order for Patent Applications MPEP 120 Other Related FAQs 5 FAQs Collapse How does the hierarchical application of Notes work in CPC schemes? What is the difference between Notes at different levels of the CPC hierarchy? Why are Notes important in the CPC classification process? What types of information do Notes provide in CPC schemes? What are references in CPC titles and how do they affect classification?