The doctoral dissertation explores three main hypotheses supported by research questions and thesis sentences. The first hypothesis is related to the level of innovation in the poetic template, the second is related to the level of suitability of the new theoretical concept presented in the dissertation, protomimesis, while the third hypothesis is related to the level of creative heritage left by Josip Sever to history, contemporaneity and future of Croatian literature. We believe that the research confirmed three basic research hypotheses, which signifies a potential and lasting contribution to the academic community since the theoretical concept can be applied to poets of relatively similar stylistic dominance, although Sever's work and poetics function as a relatively isolated system. In the research, we have fully interpreted poetics at the level of an individual poem, which results in the correct and overall precise positioning of Josip Sever in contemporary Croatian literature. We started with the general settings of literary, theoretical and cultural circles of the avant-garde, the poetic forces of Sever and his contemporaries, and conditionally speaking, the forerunners, continued with defining a new interpretive key, researched the opus comprehensively and individually, and finally determined the level of heritage of the poetics in the question. The research showed that Sever's poetic system and creative process function in isolation, the correctness of the theoretical concept was confirmed, and ultimately, the research identified Sever's legacy as extremely important in diachronic and synchronic terms.