) measures, we explored to what extent collaborative licensing mechanisms (private ordering measures), such as patent pools and … present paper aims at re-visiting our former insights in a present-day context. First, we re-examine the patent proliferation … phenomenon and related anti-commons problem by investigating the patent growth and re-assessing the existence of patent thickets …

innovation. We study the equilibrium innovation activity under three regimes: patents, no-patents and patent pools. Patent pools … licensing scheme in which innovators sell complete patent rights, and (2) they are dynamically unstable. We find that none of … optimal patent length …

available technological space. Drawing on innovation search theory and the literatures on licensing and absorptive capacity (AC … patent information and while using a control sample of non-licensing firms we find - with exceptions - support for these …