How Do I File In Other Countries?
You can file applications in each country of choice. This is appropriate if you are considering only a few English speaking countries. If you are considering a number of countries, you may want to make use of the international filing regime administered by the World Intellectual Property Organization, under the Patent Cooperation Treaty (otherwise known as the "PCT"). A PCT application can be filed in the Canadian Receiving Office of the PCT, designating in excess of 150 countries. The PCT application has two phases or "Chapters":
Chapter 1 involves an International Search (where a designated International Searching Authority searches your invention and provides an initial examination for novelty, utility and inventive step) and Publication (where your PCT application is published).
Chapter 2 is optional and involves a Preliminary Examination (where the designated International Preliminary Examination Authority examines your application for novelty, utility and inventive step).The PCT application does not, itself, become a patent, but is useful to extend the one year grace period (see If I Want Patents In Several Countries, Do I Have To File All Of Them At Once?) by an additional eighteen months (for a total of thirty months from the priority date).