https://www.epo.org/en/service-support/faq/searching-patents/asian-patent-information/iran/general-information-about-2
Is Iran a member of the Patent Cooperation Treaty (PCT)?
Yes, Iran became a member of the PCT on 4 October 2013. As a result, any international application filed on or after 4 October 2013 automatically includes the designation of the Islamic Republic of Iran.