Paris Convention;

WTO/TRIPS;

PCT; and

Budapest Treaty.

Patents of inventions; and

Divisional patents

A grace period of 6 months is provided where the invention was exhibited by the inventor or his successor at an officially recognised international exhibition for.

Patent applications are examined as to compliance with formal requirements. 

A patent is valid for 20 years from filing date of application.

Maintenance fees are payable on pending applications, and are payable annually calculated from the filing date.

A six months grace period is provided, subject to payment of surcharges. If the renewal fee is not paid, the patent lapses.

A patent must be worked within four years from the date of filing, or three years from grant (whichever is earlier).  

A court may grant a compulsory licence on the ground that the invention has not been worked in Tunisia.