PCT International Search and Preliminary Examination Guidelines
16.06 The following paragraphs contain information which is necessary to enable the examiner to complete the Form correctly. Further information is contained in the following Sections of the Administrative Instructions:
(i) for the indication of dates: Section 110;
(ii) for the classification of the international applications: Section 504 (does not apply to supplementary international search reports);
(iii) for the identification of the cited documents: Section 503;
(v) for the indication of the claims to which cited documents are relevant: Section 508;
(vi) for the consideration of unity of invention: Annex B to the Administrative Instructions.
16.07 The international search report must contain no matter other than as required by the Form; in particular, it must contain no expressions of opinion, reasoning, arguments or explanations. However, in the case of supplementary international search reports (which are not accompanied by written opinions), the report may contain explanations with regard to the citations and the scope of the search: see paragraph 15.96 items (iv) and (v).