Do I need to bring a finished product to apply for a patent?

Unnecessary! ~ Invention patents required for patent application: 1: Application process: patent application-acceptance-preliminary examination-publication-substantive examination request-substantive examination-authorization II: documents to be submitted: copy of business license or personal ID card; Product design or schematic diagram 3: generally, the application for invention patent is accepted in 5~7 days, and the certificate is issued in 2.5 ~3 years; Protection period is 20 years: utility model patent: 1: application process: patent application-acceptance-preliminary examination-authorization-announcement 2: documents to be submitted: copy of business license or personal ID card 3: utility model patent application is generally accepted in 5-7 days and issued in 6-8 months; The protection period is 10 year. Appearance patent: 1: application process: patent application-acceptance-preliminary examination-authorization-announcement 2: documents to be submitted: copy of business license or personal ID card; Pictures or photos of design, at least two sets of pictures or photos (front view, back view, top view, bottom view, left view, right view and, if necessary, three-dimensional view). For designs requiring color protection, black and white or color pictures or photographs shall be submitted. 3. Generally, it takes 5-7 days to accept an application for a patent for design and 5-7 months to issue a certificate; The protection period is 10 year.