We investigate the causal effect of patent rights on cumulative innovation, using large-scale data that approximate the …

. While the individual effects of engaging in the listed practices on firm innovation are well-understood, the existing … sample of innovation-active firms from the German Community Innovation Survey, which includes information on the development … of standards, enhanced with information on firms' engagement in patenting and publishing. We find that 26% of innovation …

We study the blocking effect of patents on follow-on innovation by others. We posit that follow-on innovation requires … freedom to operate (FTO), which firms typically obtain through a license from the patentee holding the original innovation …. Where licensing fails, follow-on innovation is blocked unless firms gain FTO through patent invalidation. Using large …