Chakravorty, Ujjayant; Liu, Runjuan; Zhao, Long - 2022
import competition had an inverted-U effect on firm innovation, as measured by patent counts and citation-weighted patents … the product in a Cournot model. We then take the theoretical prediction to the data by combining patent, firm, and trade …. Our result suggests that import penetration positively affects firm innovation when import penetration is less than 60 …