1) was gift deed executed by grand father in name of mother ?
2) if gift deed executed your mother would be absolute owner of the land
3) Pattadar Pass Book (PPB) is a document in the form of a small bound book containing all details of land owned by a person (pattadar). This PPB is issued by revenue officials on their own (suo motu) under a law called Record of Rights Act. (R R Ac
4) MRO is the competent authority to issue PPB.The application must be presented to MRO or Revenue Inspector (RI).Your uncle must have made application
6) if land was in your mother name it is surprising how patta was transferred in your uncle name . generally Death certificate of earlier owner (if you claim ownership by her inheritance or succession)has to be enclosed to application form
7) MRO would have issue notice to you and the general public to raise objections, if any. verification and inquiry is done
After a reasonable period, once the MRO is satisfied about your uncle claims after due enquiry, he will issue the PPB to your uncle
8) your mother will have to move court and seek declaration that she is lawful owner of said land and for cancellation of patta entries in favour of your uncle