Can brother claim in father's property which is leased out.

Mere father ki 2 shaadi hue thi, hum sab saath me rehte the, badi mammi pehle expire hue, then kuchh years baad papa b expire hog aye, dono mammiyo k bete h, papa ki 2 property h, dono pehle papa k naam se thi baad me 1 property badi mammi k bete k naam se ki gayi, and dusri property meri mammi k naam se registry ki gayi jo ki JDA se lease par h, ab tak sab sahi chal raha h, but kya futher me bade bhaiya claim kar sakte h is property par jo ki meri mammi k naam se h (JDA lease par), please guide asap.