Land Encroachment Case

5 years ago

Dear Sir, My ancestors property has been illegally occupied since long and constructed buildings already. There are few open plots in the same land which I don't want to loose them. As few people have started cleaning those lands as well . The land is registered in my Grand Mom's name about 80years back . Few buildings are already constructed about 15yrs+ back and few buidlings have been constructed in the last 5-10years.
In the process of procuring few more info and documents ,I have been to a surveyor and he took the google picture of the said Survey Numbers . He say's that our property that I'm claiming for, is not coming under the said Survey Numbers mentioned in the Sale deed . ( I'm claiming for 5641yrds of Survey Numbers 300,301,302.Plot no 12,13,14) But as per surveyors map the property I'm claiming to be of us is in some different survey numbers and nothing much can be done now . But my question to you Sir is, for the said property I have the Original sale deed registered in the year 1940 and my mom and their parents were living in the same property since that time paying taxes etc, So either there should be a human error while preparing the Sale deed at that time or errors in Survey Numbers .
Can I go ahead and file a case based on the Original Land document .? Also suggest me how do i rectify the Survey Numbers thing ?