In Russia too, it is possible to dispute the validity of a granted patent. Read Erik Goussev's blog on the patent opposition proceedings in Russia.
Article: Fighting Infringement via FAS
Her latest article covers how to enforce intellectual property rights in Russia using the Federal Antimonopoly Service (FAS) and not the usual venues, commercial and IP courts. Read more about FAS in the January/February 2015 issue of the World Intellectual Property Review.