If protection is sought in more than one country, the first patent application may be made available to any other country for the same invention within a period of 12 months from the date of its filing in any country.
If a patent application is filed for a similar matter in relation to the invention of a third party between the date of the application made by an applicant in any country and the date of the later application based on that application, that application can not be represented as a counter-document.
The applicant shall demand the right of preference together with the application or within two months from the date of application. If the patent right is not granted within three months from the date of the patent application, it shall be deemed that no request for the right of priority has been made.
Multiple claims may be made irrespective of whether an application for granting a patent in a foreign country was made in different countries.