Corrigenda and Consequential Amendments to CPC Revision Projects

Last updated

Thursday June 11, 2026

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OIPC/CSD

Effective May 1, 2026, RP12830-C (Corrected) (A61L) provides amended Warnings and “Transferred to” information (following the publication of RP12830 on January 1, 2026). The two groups A61L 2/0088 and A61L 2/0094 were transferred to A61L 2/18 and A61L 2/20, respectively (without taking into account A61L 2103/05). The groups A61L 2/18 and A61L 2/20 have subgroups and therefore the documents being transferred to the parent group should be reclassified into the child groups.

Effective May 1, 2026, RP12819-C (Corrected) (H10W) Indent change (H10W 72/07551), new Warnings (H10W 40/10), and modified Warning (H10W 40/20) (following the publication of RP12819 on January 1, 2026). The corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. This includes the introduction of corresponding warnings where applicable. This also indicates the proper indent level to correct the hierarchy and dependency of the subgroups.

Due to distribution disruptions, the January 2026 Notice of Change for projects RP12819 and RP11801-F on the Cooperative Patent Classification website and the USPTO Classification website differ. The classification scheme reflecting the edits in RP12819 and RP11801-F will be in alignment for both Offices effective May 1, 2026. The differences are that the USPTO Notice of Change for RP11801-F deletes a Warning in H10K 19/00 because it is no longer needed since this target destination is no longer part of any reclassification from H10W 90/00. For RP12819, the USPTO Notice of Change provides new symbols (H10W 40/10 and H10W 90/00), new Warnings (H10N 19/00, H10N 19/101, H10N 39/00, H10N 59/00, H10N 69/00, H10N 79/00, H10N 89/00, H10N 89/02 and H10W 90/00). The NOC reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. This includes the introduction of corresponding warnings where applicable.

Effective January 1, 2026, RP12366-C (Corrected) (Corrected) (A23B) provides amended Warnings and “Transferred to” information (following the publication of RP12366 on January 1, 2025). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. Corresponding changes also occur in RP12367-C (Corrected), RP12368-C (Corrected) and RP12381-C (Corrected) to correct target sources moving documents into A23B.

Effective January 1, 2026, RP12367-C (Corrected) (Corrected) (A23C) provides amended Warnings and “Transferred to” information (following the publication of RP12367 on January 1, 2025). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. Corresponding changes also occur in RP12366-C (Corrected), RP12368-C (Corrected) and RP12381-C (Corrected) to correct target sources moving documents into A23B.

Effective January 1, 2026, RP12368-C (Corrected) (Corrected) (A23D) provides amended Warnings and “Transferred to” information (following the publication of RP12368 on January 1, 2025). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. Corresponding changes also occur in RP12366-C (Corrected), RP12367-C (Corrected) and RP12381-C (Corrected) to correct target sources moving documents into A23B.

Effective January 1, 2026, RP12381-C (Corrected) (Corrected) (A23F) provides amended Warnings and “Transferred to” information (following the publication of RP12381 on January 1, 2025). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for this reclassification. Corresponding changes also occur in RP12366-C (Corrected), RP12367-C (Corrected) and RP12368-C (Corrected) to correct target sources moving documents into A23B.

Effective May 1, 2024, MP12219-C (Corrected) (B64G) amends Definitions (following the publication of MP12219 on January 1, 2024). MP12219-C (Corrected) corrects two Definitions, B64G 1/10 and B64G 1/24, published with improper Informative Reference tables.

Effective May 1, 2024, RP11777-C (Corrected) (B64G) provides amended Warnings and Revision Concordance List (following the publication of RP11777 on August 1, 2023). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for reclassification.

Effective August 1, 2023, RP11801-C (H10K) provides amended Warnings and Revision Concordance List (following the publication of RP11801 on February 1, 2023). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for reclassification.

Effective August 1, 2023, RP11944-C (H01L, H10B, H10K, H10N) provides amended Warnings and Revision Concordance List (following the publication of RP11944 on February 1, 2023). This corrected publication reflects the appropriate movement of documents to properly account for all target sources and destinations required for reclassification.

Effective February 1, 2022, MP11678 (H04L) contains further amendments to the Master CPC-to-IPC Concordance List. This resolves the Concordance issues resulting from omissions in MP0547 (previously published on January 1, 2022).

Effective January 1, 2022, RP0750 (C25B) contains further amendments to the Revision Concordance List and corresponding changes to the Scheme following the publication of RP0690. The administrative transfers indicated in RP0690 were completed January 1, 2021. The intellectual reclassification will be carried out according to RP0750.

Effective January 1, 2022, RP0751 (A61B) contains further amendments to the Revision Concordance List and corresponding changes to the Scheme following the publication of RP0697. The administrative transfers indicated in RP0697 were completed January 1, 2021. The intellectual reclassification will be carried out according to RP0751.

Effective August 1, 2021, the intellectual reclassification originally indicated in RP0707 (B22F) has been resolved and implemented in RP0726. With this project and the February 16, 2021 corrections, the issues introduced in the original January 2021 release have been fully resolved.

Effective February 16, 2021, corrections were made to resolve issues with administrative transfers in association with C-Sets of RP0707 (B22F). No changes were made to the CPC Scheme, Definitions, or Concordance. This Notice of Changes replaces the document previously published January 1, 2021. The Compilation of Changes to the CPC Scheme was also redelivered.

Effective August 10, 2020, RP0280 (H04N) was redelivered with further amendments to the Revision Concordance List to resolve the administrative transfer to group H04N21/41265, which was deleted by concurrent project RP0142 (H04N). The Compilation of Changes to the CPC Scheme was also redelivered.

Effective August 1, 2020, RP0312-F-C (H02J) was published with further amendments to finalize RP0312 (following the publication of RP0312-F on May 1, 2020) by deleting the previously frozen group and updating the cross-references.

Effective August 1, 2020, RP0633-C (C08J) was published with further amendments to the Revision Concordance List and corresponding changes to the Scheme (following the publication of RP0633 on January 1, 2020). The RCL of this publication supplements the previously published RCL.

Effective May 1, 2020, RP0570-C (C02F) was published with further amendments to the RCL and the Scheme (following the publication of RP0570 on January 1, 2019). The RCL replaces the previously published RCL.

Effective May 1, 2020, RP0386-C (H02J) was published with further amendments to the Revision Concordance List and corresponding changes to the Scheme (following the publication of RP0386 on January 1, 2020). The RCL replaces the previously published RCL.

Effective January 1, 2017, RP0309-C (C08G) was published with further amendments to the RCL and corresponding changes to the Scheme (following the publication of RP0309 on May 1, 2016). The RCL replaces the previously published RCL.