It's important that you installed the correct opener for the type of door that you have, as some openers are more qualified to lift heavy door varieties than others. By making sure you have a good match, you can keep the cost to repair a garage door opener down from the beginning.
National Phase: after the end of the PCT procedure, usually at 30 months from the earliest filing date of your initial application, from which you claim priority, you start to pursue the grant of your patents directly before the national (or regional) patent Offices of the countries in which you want to obtain them.
The filing date is the date when a patent application is first filed at a patent office. The priority date, sometimes called the effective filing date, is the date used to establish the novelty and/or obviousness of a particular invention relative to other art. The priority date may be earlier than the actual filing date of an application.