Conceptual analogy (CA) is an approach, that integrates conceptualization based on prior experiences, i.e. case memory organization, and analogical reasoning (Borner and Janetzko 1995, Borner and Wode 1995). It was prototypically implemented and tested to support the design process in building engineering (B orner 1994a). This paper reviews the development of CA. It provides the basic assump...