China historically paid more attention to improving patent quantities because policymakers wished to improve the patent qualities by stimulating patent quantities, and it focused on developing invention patents but paid little attention to utility model patents because many people believe that the quality of utility model patents is lower than that of invention patents. Varies studies discussed the issues of patent qualities, but little empirical evidence was developed to show the relationship between patent quantities and patent qualities or prove that the utility model patents’ quality is lower than the invention patents’ quality. An empirical analysis is helpful to find the impact of patent quantities on patent qualities, and comparing it with the impact of R&D investments on patent qualities will show which has a greater impact. By comparing them with invention patents’ quality, the statistical examination on the quality of utility model patents is also meaningful.

The past three decades have witnessed the boom of patents and mounting place-based innovation policies (PIPs) in China. However, the PIP-innovation nexus, particularly the distortion effect and underlying mechanisms, remains poorly understood. Matching micro-level patent data and industrial firm data, we documented a promotion effect of PIPs on local firm innovation measured by both patent quantity and quality. Moreover, we observed a distortion effect on patent quality following the 2008 crisis, primarily originating from privately owned enterprises rather than stateowned ones. Drawing from theories of technological learning and the unique institutional characteristics of PIPs in China, we have further unpacked the underlying mechanisms driving these effects: Both industry-academia collaboration and foreign direct investment play significant roles in the PIP-innovation nexus, and the latter appears to be particularly influential in causing the distortion effect. Additionally, our analysis has revealed that preferential policies, such as patent subsidies and reductions in land prices, are instrumental in enabling PIPs to exert their impact.