affect firms' innovation strategy choices, concretely, whether to abstain from innovation, to introduce products that are … known in the market but new to the firm (imitation) or to introduce market novelties (innovation). Using a sample of 1253 … effectiveness is low or medium, both innovation and imitation are enhanced, whereas if it is high, only innovation is enhanced. …

market (innovation). It turns out that spillovers from rivals lead to more imitation, while inputs from customers and …We estimate the effect of R&D spillovers on sales realized by products new to the firm (imitation) and new to the … research institutions enhance original innovation. …

Based on a sample of German innovating firms that contains information on formal and informal innovation cooperation … line with previous empirical work, we do not find much empirical evidence for the relevance of incoming spillovers. In … cooperations are the innovation dynamics at the industry level. Firms who operate an R&D department and firms who are involved in …

Innovation is commercialization of technology. Imperfections in markets for technology should leave marks on physical … investments for innovation. Two types of transaction costs could affect innovative investments: royality stacking and hold … ownership fragmentation on investments related to innovation for firms with small patent portfolios. Hold-up threats are …

Thickets of partially overlapping patent rights raise costs to secure IPR for innovation. Fragmented IP ownership … capital-intensities among owners of overlapping patents affect propensities to invest in innovation. I find that firms with … small patent portfolios are less likely to invest in innovation if IPR is fragmented. Firms with large patent portfolios are …

higher innovative performance for firms that do not in-license. Furthermore, the effects of fragmentation on innovation also …