https://www.epo.org/en/service-support/faq/searching-patents/asian-patent-information/russian-federation/after-grant/can
Can a lapsed patent be restored in Russia?
If a patent has lapsed due to non-payment of renewal fees, a request for restoration can be filed within three years from the expiry of the last year for which the fee was paid. For restoration procedures due to reasons other than non-payment of renewal fees (e.g. restoration of priority) see the Civil Code of the Russian Federation.
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