no
Reinstatement of priority on grounds of "due care" accepted.
yes. A patent applicant can convert the patent type from a petty patent (utility model) to an invention before the patent application is granted. The converted patent application has the filing date of the original patent application.
6 months
no
DIP only conducts formality examination for utility models, and the documents can be authorized if they meet the formality examination standards. If litigation or evaluation of the stability of utility model Claim is required, the applicant may submit a request for substantive examination within one year after the granted announcement.
yes. Patent applicants can change the patent type from invention to petty patent (utility model) before the patent application is granted. The converted patent application has the filing date of the original patent application.
via Paris Convention : 6 months from earliest priority date.
20 years
10 years
The initial period of protection is 6 years, which can be renewed twice, up to a maximum of 10 years.