permanent interim injection take on 2019

If the interim injunction order is made absolute then it will remain effeective till the disposal of the suit.

per Sec. 37(2) of Specific Relief Act- A perpetual injunction can only be granted by the decree made at the hearing and upon the merits of the suit; the defendant is thereby perpetually prevented from the assertion of a right, or from the commission of an act, which woud be contrary to the rights of the plaintiff.