This work proposes a combined approach to assessing the effectiveness of technology (innovation) transfer, which uses the method of "box" modeling of systems, as well as an assessment of the level of readiness of the product for introduction to the market. This approach's peculiarity is considering the product transfer process from an idea to a viable and competitive development at the micro and macro levels. At the micro level, a set of tools is applied to assess the level of product readiness for implementation (TRL, IRL, IPRL) without describing the technology transfer environment. At the macro level, the box approach is applied, allowing us to consider technology transfer as a system with input and output parameters, system parameters, control parameters, and disturbing parameters. The combined approach for simultaneous assessment of the state of readiness of the product for implementation and transfer efficiency according to the home model of chests and TRL-IRL-IPRL scales allows the implementation of two parallel processes. On the one hand, an assessment of the product life cycle as an element of the ecosystem of innovation transfer is carried out, taking into account input (what does the market need?) and output (what result will be obtained?) parameters. On the other hand, the evolution (life cycle) of the product's readiness for market introduction is monitored as an element of innovation transfer management. Implementing the main provisions of this approach will avoid errors in managerial (technology transfer) and technological (product life cycle) decisions at each level of product readiness for implementation due to the possibility of returning to the previous stage rather than at the end of the life cycle.