I am a lessee in a property for the last 50 years . The lease was assigned to me by another lessee B
Lessee B was assigned the property by lessee C in 1950 and lessee D was leased the property by the original owner /lessor E in 1945.
Each lease agreement conferred full rights on the lessees to assign,rent and use . However in the earliest lease of 1945 there is a clause which states that assignment can only be done with the express approval of the original lessor. This was not followed by subsequent assignments . Now the lessor is claiming - after 50 years that our lease is invalid and is asking us to vacate. That too after collecting lease rent. Does the lessor have any legal standing in this case ?