There are two Fundamental Rights that will be useful in fighting 498A.
Here they are:
Right to Freedom
21. Protection of life and personal liberty.- No person shall be deprived of his life or personal liberty except according to procedure established by law.
Right to Constitutional Remedies
32. Remedies for enforcement of rights conferred by this Part.- (1) The right to move the Supreme Court by appropriate proceedings for the enforcement of the rights conferred by this Part is guaranteed. (2) The Supreme Court shall have power to issue directions or orders or writs, including writs in the nature of habeas corpus, mandamus, prohibition, quo warranto and certiorari, whichever may be appropriate, for the enforcement of any of (3) Without prejudice to the powers conferred on the Supreme Court by clauses (1) and (2), Parliament may by law empower any other court to exercise within the local limits of its jurisdiction all or any of the powers exercisable by the Supreme Court under clause (2). (4) The right guaranteed by this article shall not be suspended except as otherwise provided for by this Constition.