<P> The Patent Cooperation Treaty, in its Article 8 (1), provides the possibility of claiming a right of priority for the filing of an international application (PCT application): </P> <Dl> <Dd> The international application may contain a declaration, as prescribed in the Regulations, claiming the priority of one or more earlier applications filed in or for any country party to the Paris Convention for the Protection of Industrial Property . </Dd> </Dl> <Dd> The international application may contain a declaration, as prescribed in the Regulations, claiming the priority of one or more earlier applications filed in or for any country party to the Paris Convention for the Protection of Industrial Property . </Dd> <P> Rule 4.10 (a) PCT goes on to mention that: </P>

What is the priority date of a patent