5-6 years
no
The novelty grace period is 12 months before the filing date/priority date.
yes
20 years
no
yes. The patent type can be converted from invention to utility model at any time before the patent application is granted/rejected. 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.
IPOPHIL conducts formality examination and substantive examination of utility model patent applications, but only needs to meet the standards of novelty and practicality, and does not require inventive step.
6 months from the earliest priority date.
no
no