- via Paris Convention : 6 months from earliest priority date.
 - Hague Agreement route: 6 months from earliest priority date.
 
12-18 months
yes. The applicant may request that the patent application be changed from an invention to a utility model before the publication of the patent application but no later than the grant decision.
The novelty grace period is 6 months before the filing date/priority date.
Reinstatement of priority is accepted on grounds of "due care".
- via Paris Convention : 6 months from earliest priority date.
 - Hague Agreement route: 6 months from earliest priority date.
 
4-12 months
The novelty grace period is 6 months before the filing date/priority date.
20 years, inventions of pharmaceuticals, agrochemicals and pesticides can enjoy a maximum patent term extension of 5 years.
yes. The applicant can request to change the patent type from utility model to invention before the patent is granted.
- via Paris Convention : 12 months from earliest priority date.
 - via Nationalization of PCT : 31 months from earliest priority date.