Information for Users of the PCT System


Due to the effects of the COVID-19 pandemic on the mode of operations of Rospatent, the International Bureau of Intellectual Property (WIPO) and of postal systems worldwide, Rospatent, in its function as the International Searching Authority (ISA/RU) and the International Preliminary Examining Authority (IPEA/RU), has changed the procedure for sending PCT notifications, international search reports, written communications, and international preliminary examination reports to applicants starting from March 30, 2020.

PCT applicants can obtain complete information about the processing of their international applications, including a review of the international search report and the opinion letters (ISA/RU) by using the ePCT service offered by WIPO.

Applicants who are not yet using the ePCT service are encouraged to create an appropriate account. For more details please see

Other procedural information will be communicated to applicants from the ISA/RU via e-mail letters provided that an e-mail address had been indicated in the application filed.

Applicants who have not yet provided an e-mail address in relation to their international application(s), are encouraged to provide such information to the International Bureau in accordance with the recommendations listed at

If needed, applicants can send a message to ISA/RU at