The research focuses on the analysis of open data on public procurement of innovative products and on procurement of research and development services (R&D). The principle of stimulating innovations is enshrined in the legislation governing public procurement. However, the complexity of testing products for innovation criteria, the differences in classifying products as innovative and the specifics of conceptual and categorical framework in this sphere indicate the peculiarities of the implementation of the principle of stimulating innovation by contracting authorities regulated by 44-FL and by 223-FL. This research empirically answers the following questions: What procured products in the market are considered innovative by contracting authorities? What characteristics and peculiarities are specific to innovative public procurement in Russia? What types and categories of contracting authorities perform such procurement? We reveal that the procurement of innovations is related to the law under which the organization conducts purchases, as well as to the organizational and legal form of the contracting authority. The procurement of innovations is also influenced by the method of determining the supplier, the price of the product and the subject of the purchase. The results of the study show heterogeneity in the procurement of innovations by Russian contracting authorities and link this heterogeneity with the differences in the procurement legislation.