📁 You have, in most cases, up to an additional 18 months from the time you file your international patent application before you have to begin the national phase procedures with individual patent Offices and to fulfill the national requirements.

🌐 This additional time can be useful for evaluating the chances of obtaining patents and exploiting your invention commercially in the countries in which you plan to pursue patent protection, and for assessing both the technical value of your invention and the continued need for protection in those countries.
It is important to note, however, that you do not have to wait for the expiration of 30 months from the earliest filing date of your patent application (“priority date”) before you enter the national phase – you can always request early entry into the national phase.

‎‍💼 Since, in the national phase, each patent Office is responsible for examining your application in accordance with national or regional patent laws, regulations, and practices, the time required for the examination and grant of a patent varies across patent Offices.