A single application may include several classes, separate official fees has to be paid for each class. 

Yes

Yes

Yes - Nice Classification, 10th addition

• Power of Attorney duly legalized by the Lebanese consulate. 
• Copy of priority document, if priority is claimed, certified

Registered Trademark are published in Gazette. Opposition may be filed before the court  

15 years from the filing date

3 months grace period 

simply signed and sealed

None due

N/A

A trademark registration is cancelled only through a court action filed by a prior user, requesting such cancellation