What is an updating provisional patent application?
As mentioned above, when you first file a patent application for a particular invention, the date that the application is lodged with the Patent Office becomes the applications priority date. Its then possible, within one year of the original patent application filing, to file a subsequent patent application, for example an overseas patent application claiming the priority of the first filed patent under the Paris Convention. Now it may be that after filing the first patent application, and before filing the overseas patent application, you have come up with an improvement to the invention that wasnt described in the first filing. In that case a second patent application, for example a provisional patent application, may be filed describing the improvement. The overseas application would then claim priority from both the first patent application and also claim priority from the second application and the patent specification of the overseas application would describe and claim the mate
