Singapore Patent Steps & Timelines Timelines: Patents With changes that came into effect on 1 July 2004, different timelines apply depending on the filing date of the patent application. If you wish to know the timelines for an application with a filing date before 1 July 2004, please contact us. For applications with a filing date on or after 1 July 2004, please click here. Please note that for PCT national phase applications, the date of the PCT application is the filing date. Designs Trade Marks