In the era of the transition processes associated with the change of technological structures, the growth of the intensity of information support for new products, and the growing threats of unauthorized copying of the results of intellectual activity, the problem of assessing the technical and consumer novelty of experimental products remains relevant. Solving the problems of assessing the significant changes (drift) of requirements to the consumer parameters of new products or the introduction of new functional capabilities into the technological processes of innovative enterprises creates a core competitive advantage - technical and consumer novelty. In order to complement existing methods and approaches to the problem posed, in this article we present models of functionally necessary and functionally sufficient structures that differ on the basis of the basic structures represented by the point of a multidimensional space of functionally significant parameters that take into account existing limitations imposed by the level of development of scientific and technological progress and the evolution of the social environment, allow to exert control effects on the drift functionally significant parameters at any stage of the life cycle of innovation, subject to the use of specialized Total Quality Management tools.