Russian search system Yandex (ranked as most popular search system in Russia by Alexa Internet, site of Amazon calculating statistics on visiting sites worldwide) in collaboration with the Russian PTO (Rospatent) launched on 03 March 2019 a service for searching information on Russian patents (https://yandex.ru/patents). All data and details about patents are provided by Pospatent, so they are expected to be full and accurate. Available for search data are all granted patents starting from 1924. The search can be done by key words, numbers of documents, name of invention, inventors or patent owners. The system also uses meaningful key words to provide full range of documents potentially meeting the request.