Gäßler, Fabian; Harhoff, Dietmar; Sorg, Stefan; … - 2024
We study the blocking effect of patents on follow-on innovation by others. We posit that follow-on innovation requires …. Where licensing fails, follow-on innovation is blocked unless firms gain FTO through patent invalidation. Using large … contrast, for patents on high-value original innovations, invalidation mainly increases high-value follow-on innovation in the …