From: Rabbi Moshe Sofer
To: Unknown recipient
The Chasam Sofer rules that since the new lessee's lease from the feudal lord is legally valid, no court can compel him to reduce his price — the displaced tenant must pay the full amount demanded or forfeit. The moda'ah (protest of coercion) is entirely irrelevant, as one cannot purchase at a high price and then demand to pay less; while the beis din should not help the lessee extract excess payment, his legal right to demand any price stands.
Source: Shu"t Chasam Sofer CM §104