You haven't mentioned the type of the case you are wife has filed on you. I am assuming it is a DV case.
Anything which is self-acquired by parents, wife cannot claim anything but whatever is jointly owned between you and your parents or ancestral property she can claim under right to residence. Again to be very specific this is just a right to reside not right to own.
See this 2 judgements.
1) Madras High Court - P.Babu Venkatesh vs Rani on 25 March, 2008
Husband sold property to Mother after the dispute arose between himself and his wife. The learned Judicial Magistrate No.6, Salem passed the residence order in favor of the wife with respect to this property. The Madras High Court upheld the order passed by the learned Judicial Magistrate No.6, Salem in Crl.M.P. No.5231 of 2007 dated 31.12.2007.
2) Delhi High Court - Preeti Satija vs Raj Kumari And Anr. on 15 January, 2014
Often, sons move out, or transfer properties or ownership rights, or shares in immovable properties, at the hint of trouble or discord with their wives, in favour of their relatives. Likewise, the parents of the husband often in such cases "disown" them after the son moves out from the common or "joint" premises owned by either or both his parents, when there is outbreak of marital discord. Courts have to be cautious in their approach, while entertaining and short circuiting suits for possession, which are in effect directed against the plaintiffs' daughter-in law, or else the right of residence in shared households would be a mere chimera, a teasing illusion which the law grandly promises, but is seldom, if ever, able to enforce.