A single application may include several classes.

Yes

Yes

Yes - Nice Classification, 10th addition

• Power of Attorney duly signed  with company seal 
• Copy of priority document, if priority is claimed, certified

60 days 

10 years from the filing date

No grace period 

simply signed and sealed

None due

N/A

A mark becomes vulnerable to an action for cancellation if it is not been used in the preceding 5 years.