IPA patent 4.2.3.1-sub-codes---discontinued — IP Australia Patent Manual of Practice and Procedure – 4.2.3.1 Sub-Codes - Discontinued

Also in this Chapter: 4.2.3.2 The Australian Classification System - Discontinued 4.2.3.3 Indexing According to IPC Edition (2006) - Discontinued 4.2.3.4 Master Classification Database (MDC) 4.2.3.5 Recording Classification Symbols on Machine-Readable Records 4.2.3.6 Presentation of Classification Symbols and Indexing Codes on Patent Documents Sub-codes can collect together documents which relate to distinguishable facets of an IPC sub-group (e.g. a particular chemical compound in a class of compounds, or mechanical devices having a particular feature within a broader IPC sub-group). They can also be applied across groups of the IPC. The IPC Classification Arbiter may be of assistance in selecting suitable sub-codes for sub-coding. The sub-code need not relate to the inventive feature, as this is included in the annotation. In PAMS there is no provision to include sub-codes. Sub-codes are not in use any more.