RT journal article T1 Joint forces: Towards an integration of intellectual capital theory and the open innovation paradigm A1 Barrena Martínez, Jesús A1 Cricelli, Livio A1 Ferrándiz León, Esther A1 Greco, Marco A1 Grimaldi, Michele A2 Economía General A2 Ingeniería Industrial e Ingeniería Civil A2 Organización de Empresas K1 intellectual capital K1 open innovation K1 innovation performance K1 human capital K1 relational capital K1 structural capital AB Intellectual capital (IC) is among the most long-lived topics in managerial literature. More recently, the emergence of the open innovation (OI) paradigm has encouraged the understanding that firms should collaborate with other organizations to leverage their own R&D capabilities. We propose that these two streams of managerial literature should join forces since the OI paradigm could be considered an approach to innovation with foundations in relational capital, facilitated by an appropriate level of human and structural capital. Surprisingly, few researchers attempted to put IC and OI into relation. Therefore, this paper has two main goals: providing a theoretical model that synoptically presents how IC and OI overlap and testing the theoretical model by analyzing how firms’ IC affects OI-related performance. We study a sample of 3,744 Spanish firms from the PITEC dataset. We show that the three IC constructs positively affect OI performance. Relational and human capital show diminishing returns on OI performance. PB Elsevier SN 0148-2963 YR 2020 FD 2020 LK http://hdl.handle.net/10498/34594 UL http://hdl.handle.net/10498/34594 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 08-nov-2026