For domestic invention patent applications, Shenzhen subsidies can be divided into the stages of actual trial and obtaining certificates, whether to entrust an agency (the agency in Shenzhen needs to entrust), whether it is the first invention patent (except for individuals), whether to handle fee reduction and exemption, etc. The maximum amount is 8000 yuan. After applying for an invention patent and obtaining a certificate, Longgang District subsidizes 5,000 yuan.