6 months from the earliest priority date.
no
no
7 years
no
yes. A utility model can be converted into an invention at any time before granted/rejection, and the converted patent application has the same filing date as the original application, and can only be converted once and a conversion fee is required.
6 months from the earliest priority date.
no
- via Paris Convention : 12 months from earliest priority date.
- via Nationalization of PCT : 30 months from the earliest priority date.
yes
1-1.5 years