This system would provide for a true unitary patent that "may be granted, assigned or canceled in the territory of all the Contracting States with due regard to the invention patentability criteria provided for in the USSR legislation". The second version of the convention went less far: in line with the European Patent Convention, it provided for a single evaluation phase, but after approval, it would be converted in a bundle of national patents.
This system would provide for a unified patent that "may be granted, assigned or canceled in all participating countries with regard to the invention's patentability criteria as stipulated in USSR legislation". The second version of the convention took a more restrained approach: similar to the European Patent Convention, it allowed for a single initial assessment phase, but after approval, it would be reconfigured into a series of national patents.