The article authored by Aleksey Zalesov, PhD, Patent Attorney, lawyer, Senior Partner of «Zalesov, Timofeev, Gusev & Partners» Law Firm, the legal consequences of invalidation of a patent in full and in part in Russia are considered. The difference between the mechanisms of termination of a patent and invalidation of a patent is shown. The moment of the emergence of exclusive patent law and temporary legal protection of an object in the context of the grant of a patent and the recognition of a patent as invalid is considered.