We may mention at the outset that after referring to the judgments noted above even the High Court in the impugned judgment has accepted that right of appeal is not a matter of procedure and that it is a substantive right. It is also recognised that this right gets vested in the litigants at the commencement of the lis and, therefore, such a vested right cannot be taken away or cannot be impaired or imperilled or made more stringent or onerous by any subsequent legislation unless the subsequent legislation said so either expressly or by necessary intendment. An intention to interfere with or impair or imperil a vested right cannot be presumed unless such intention be clearly manifested by express words or by necessary implication. However, the High Court has still dismissed the writ petition as it was of the opinion that the vested right of appeal conferred under Section 260A of the IT Act, insofar as payment of court fee is concerned, is taken away by necessary implication. In other words, the provisions of Section 52A of the 1959 Act inserted by the Amendment Act of 2003, in that sense, have retrospective operation thereby effecting the earlier assessment also. This proposition is advanced with the logic that before prior to introduction of Section 260A in the IT Act with effect from October 01, 1998, there was no right of appeal