What is the duration of the registration of a design? Can it be extended?

The duration of the registration of a design is initially ten years from the date of registration, but in cases where claim to priority has been allowed the duration is ten years from the priority date. This initial period of registration may be extended by further period of 5 years on an application made in Form-3 accompanied by prescribed fees to the Controller before the expiry of the said initial period of ten years. The proprietor of a design may make application for such extension even as soon as the design is registered.