Knowledge assets are key organizational factors responsible for gaining a sustained competitive advantage in the new knowledge economy characterized by high degrees of environmental turbulence, complexity, and dynamism. Although the scientific and professional literature has provided numerous proposals for measuring a firm’s knowledge stock or intellectual capital, further research is still needed because empirically supported models for the classification and measurement of a firm’s intellectual capital, adapted to different contexts, are not very common. To fill this gap, a model has been developed in order to analyze the nature and measurement of intellectual capital blocks in technology - intensive firms.