Currently next to the minimization of the production costs the R&D-costs are coming to the fore. This is not just because the share of the R&D-costs in the product costs increases constantly, but also because in a lot of cases the R&D-resources run short and thus become the bottleneck of innovation. The lean innovation approach is concerning all the company’s product-related innovation activities targeting at the maximization of the net benefit of R&D. This article demonstrates the 5-step-realization of lean innovation in companies.