Abstract: 【Purpose/significance】To build a conceptual model of enterprise's patent threat early warning, improve the theory of patent threat early warning, and provide theoretical basis for enterprises to participate in patent threat early warning work.【Method/process】 Starting from the factors of technology R&D personnel that affect the patent threat of enterprises, this paper determines the evaluation dimension of the patent threat early warning of enterprises, constructs the concept model of the patent threat early warning of enterpris⁃ es at the level of technology R&D personnel, analyzes its early warning mechanism, and conducts empirical research.【Result/conclu⁃ sion】The "Cassette" model of enterprise’s patent threat early warning is constructed. The model can guide enterprises to evaluate the patent threats from the perspective of technology R&D personnel, which is helpful to achieve more effective evaluation and early warn⁃ ing of enterprise’s patent threat.【Innovation/limitation】The innovation of this paper is mainly based on the HCM theoretical frame⁃ work, from the quantity of innovative human capital, the quality of human capital and the maintenance time of human capital to evalu⁃ ate the enterprise’s patent threat, and then build the conceptual model of enterprise’s patent threat early warning. The limitation is that the measurement of relative technology R&D capability mainly uses the number of patent applications of technology R&D person⁃ nel, and the evaluation dimension has not been measured from the perspective of patent application quality.