An additional search will sometimes be required either at the first stage of amendment or subsequently. This may arise for a number of reasons.
First, an An additional search may be necessary where:
If the application has been filed under the PCT, the search report will be the international search report made under the PCT, which will be accompanied by a supplementary European search report, unless the Administrative Council has decided that a supplementary report is to be dispensed with (see E-VIII, 3.2). Both of these reports will have to be considered by the examiner when deciding whether any additional search is required.