Based on patent data related to the aviation equipment industry in the Chengdu-Chongqing region from 2015 to 2024, this study adopts a patent bibliometric approach to construct a collaborative innovation network model grounded in patent co-application relationships. From the perspectives of patent cooperation networks, technological domain coupling, and actor interaction structures, the paper investigates the structural characteristics and evolutionary patterns of collaborative innovation in the Chengdu-Chongqing aviation equipment sector.