PCT International Search and Preliminary Examination Guidelines
PART I INTRODUCTION AND OVERVIEW
Chapter 3 Overview of the International Preliminary Examination Stage
Time Limit for Establishing the International Preliminary Examination Report
3.24 The International Preliminary Examining Authority must establish an international preliminary examination report, entitled "international preliminary report on patentability (Chapter II of the Patent Cooperation Treaty)," within whichever of the following periods expires last:
(i) 28 months from the priority date;
(ii) six months from the time provided under Rule 69.1 for the start of the international preliminary examination (see paragraphs 3.13 to 3.14); or
(iii) six months from the date of receipt by the International Preliminary Examining Authority of any translation furnished under Rule 55.2 (see paragraphs 18.11 and 18.12).