Utility model patent quality is vital for emerging countries to cultivate a strong domestic market and increase openness. Given China’s high-quality development, this study incorporates enterprise utility model patent quality and export domestic value-added rate (DVAR) into a unified analysis framework to explore their relationship using authorized patent data and financial and customs data of Chinese industrial enterprises from 2002 to 2014. The utility model patent data used to support this study’s findings were provided by the Incopat Patent Database, while the enterprise financial data and customs data were supplied by the RESSET Database. The empirical results show that: (i) utility model patent quality significantly contributes to enterprises’ export DVAR; (ii) factor-intensive heterogeneous analysis indicates that the utility model patent quality of capital-intensive enterprises has a more significant promotion effect on DVAR; (iii) the price–cost markup and the relative price of intermediate goods are crucial domestic channels for utility model patent quality to promote DVAR; and (iv) market segmentation moderates the mediating role of the domestic intermediate relative price. Therefore, the government should further improve the utility model system, focus on increasing domestic market advantages, and develop industry-specific patent guidance policies. This study contributes to the literature by exploring the influence of utility model patent quality on enterprises’ DVAR using an optimized utility model quality index, providing policy references for optimizing China’s utility model patent system and upgrading the import gains of enterprises. However, this study has some limitations, and future research should strengthen the subdivision of utility model patents in different industries and explore the economic performance of the combination of inventions and utility models.