Research on patent behavior and patent strategy of Chinese enterprises 并列题名：Research on patent behavior and patent strategy of Chinese enterprises Research on the innovation strategy of Chinese enterprises Research on the dual class shares structure of Chinese enterprises 并列题名：Research on the innovation strategy of Chinese enterprises Research on marketing change practice of Chinese enterprises Research on the patent litigation strategy of enterprises Research on overseas cultivated land investment of Chinese enterprises Research on public opinion of chinese enterprises Research on outward foreign direct investment of Chinese enterprises