In a collaborative design environment, various software tools are utilized to enhance the product development. This entails a meaningful representation and exchange of product data semantics across these different systems. Semantic interoperability of product information refers to enabling the exchange of design intelligence, including construction history, parametric dimensions, features, constraints, assemblies, and metadata. This is a crucial difference compared to current translation softwares and standards such as IGES and STEP that deliver “dumb” geometry, which means that there are no associated features or history. In this paper, we propose an ontology-based approach to enable semantics product data exchange. The devised approach consists in developing a “Common Design Features Ontology”, called CDFO. Interoperability among ontologies is fulfilled by defining several mapping rules. We use a descriptive logic-based language, notably OWL DL to represent formally our ontology.