First of all, there is no minimum marks to be secured to enter JIPMER, it is purely based on the merit. You've to top the list to enter into JIPMER. It is also based on the category and the domicile(state) you belong to. For Puducherrry UT students,  the cutoff  is far lesser than all India quota. 

Counselling ratio is 1:10 (ie for 1 seat, they will call 10 students) 

As per previous years,

For OBC seat intake is 38 seats and the rank range is 1-380. The OBC cut off is 98.87.

This is the cutoff who are called for counselling. Since admitted list is not available now, we can't say about the minimum marks that got admitted there. 

Hope this helps.