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