Table of Similar Goods and Services
4224 Authentication of works of art
Notes on similar group 4224
Practice notes (J&C)
This group has only “authentication of works of art”; there are no official notes. Appraisal of works of art is in 3603 of Class 36 (practical tip). No additions or deletions to this group in 2026.
Applies to the 2026 edition · Published 2026-10-09 · Reviewed 2026-10-09
Data version: CNIPA Table of Similar Goods and Services, 2026 text (based on the 13th edition of the Nice Classification, NCL 13-2026, in force since 1 January 2026). Chinese terms, groups and numbers follow the official text; English and Spanish terms are taken from WIPO, while CNIPA-specific items (C numbers) carry reference translations, whose English was fully revised on 8 October 2026. NCL 13-2027 enters into force on 1 January 2027. Selected reference translations were revised on 13 October 2026.
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| Class | Group | Item No. | Chinese | English |
|---|---|---|---|---|
| 42 | 4224 | 420132 | 艺术品鉴定 | authenticating works of art |