Nagaoka, Sadao; Nishimura, Yoichiro - Institute of Innovation Research, Hitotsubashi University - 2005
at the patent application stage and the sunk cost incurred for obtaining and developing a patent, the patent (internal … theoretical predictions. Moreover, a firm with larger price cost margin does not have a lower rate of patent utilization, which … more diversified patent portfolio tends to have more patents but its utilization rate tends to be lower, suggesting that …