There is growing evidence that firms increasingly adopt open innovation practices. In this paper we investigate the … impact of two such external knowledge acquisition strategies, "buy" and "cooperate", on firm's product innovation performance …. Taking a direct (productivity) approach, we test for complementarity effects in the simultaneous use of the two strategies …

innovation indicators (a1) in the framework of an innovation equation with variables of endogenized KTT activities (overall … activities, specific forms of activities) as additional determinants of innovation, and (a2) based on a matched-pairs analysis … enterprises that took place at the beginning of 2005. We found that KTT activities improve the innovation performance of firms …

from 2582 firms, i.e. 45.4% of the firms in the underlying sample. -- knowledge and technology transfer ; innovation …

comprising three cross-sections (1999, 2002, and 2005) of the Swiss innovation survey, four different types of R&D strategies …

, but we do not find evidence for the reverse effect. When additionally looking at innovation performance, R&D activities …