Do Russian and Eurasian patent offices require annual payments for keeping patent applications in force?
No annuities are due either in the Russian Patent and Trademark Office or in the Eurasian Patent Office while the patent application is pending.
According to Russian IP law, the first accumulative annuities should be paid together with the grant and registration fee, starting from the 3rd year for Russian invention patents and from the 1st year for Russian utility model patents. The due date is counted from the date of filing the application (international filing date for PCT national phase applications).
The year from which the annuities for a Eurasian patent should be calculated depends on the national rules of each respective country and varies for different countries (1st, 2nd, or 3rd year).