4.2.2.1.2 Classifying in Residual Places

Also in this Chapter:

• 4.2.2.1.1 Application of Indexing Codes/2000 Series

• 4.2.2.1.3 Places that cannot be the First Symbol

There are also places in the IPC/CPC which should be considered for classification if and only if no other place of the IPC/CPC provides for the subject matter under consideration. Such places are referred to as “residual places”.

Expressions in the titles like:

“not otherwise provided for”,

“not provided for in ...”,

“not covered by ...”

clearly designate residual places.

The residual nature of the place can be relative to other subgroups, other main groups of the same subclass, other subclasses or even to the whole of the IPC. Main groups 99/00, throughout the whole of the IPC, are special residual places.