The sale of ideas (e.g. through licensing) facilitates vertical specialization and the division of labor between research and development. This specialization can improve the overall efficiency of the innovative process. However, these gains depend on the timing of the sale: the buyer of an idea...

Project Portfolio Management (PPM) is a growing issue in both professional and academic circles. The typology of Cooper et al. (1998) has pictured the variety of PPM formalized approaches into four types (financial, strategic, scoring and “bubble diagram”). While the use of formalized...