yes. Prior to patent grant/rejection, the patent type can be converted from utility model to invention at the request of the applicant. Can only be converted once.
yes
Reinstatement of priority on grounds of "due care" and "unintentional/due care" accepted.
20 years. Patented medicines and plant protection new varieties can obtain an additional 5-year renewal period, and children's medicines can obtain an additional half-year patent protection period.
via Paris Convention : 12 months from earliest priority date.
via Nationalization of PCT : 30 months from the earliest priority date.
Validation of European Patent in EPO member states: within 3 months from the date of grant of the European patent.
no
yes. Before the patent is granted/rejected, the patent type can be changed from invention to utility model at the request of the applicant. Can only be converted once.
A novelty grace period of 6 months prior to the filing date/priority date may be granted if the invention is disclosed as a result of apparent misuse by the applicant or its former right holders, or if the invention is exhibited at an official or officially recognized exhibition.
yes
yes
The initial protection is 5 years, which can be renewed 4 times for a maximum protection of 25 years.