yes
no
15 years, the initial protection is 5 years, and can be renewed for 2 times after the expiration, with a maximum of 15 years.
no
Restoration of priority will not be accepted.
no
A 12-month novelty grace period is available if the invention is disclosed by the applicant or its agent in any form of communication within one year of the filing date or priority date, or exhibited at a national/international exhibition. Appropriate evidence must be submitted at the time of application.
4-6 months
Yes, a utility model can be converted into an invention during the formality examination period within 90 days from the filing date.
no
A 12-month novelty grace period is available if the invention is disclosed by the applicant or its agent in any form of communication within one year of the filing date or priority date, or exhibited at a national/international exhibition. Appropriate evidence must be submitted at the time of application.