With the advancement in technology, market competition and globalization, innovative design processes are attracting researchers and designers more. There are many innovative methods upon which designers mainly depend on the initial phase of innovative concept generation. However, literature shows that these techniques have some research gaps in terms of the final evaluation and selection of best solution concept. In this study, we identify three scientific questions for evaluation method of solution concepts resulting from the TRIZ based inventive design method, first, how to define a solution concept, then a Function-Structure-Behavior approach for modeling solution concept. The proposed model is based on object-oriented modeling formalism. Then in future, using this solution concept modeling we will identify, analyze and classify evaluation criterion to evaluate solution concepts.