(1) If it has been established, based on sections 574 to 574b, by arrangement of the parties or by judicial decision that the lease is to be continued for a specified period of time, then the lessee may only demand its further continuation if this is justified by a material change in circumstances or if circumstances have not come about the foreseen occurrence of which was decisive for the period of time for which the lease was to continue.
(2) If the lessor terminates a lease regarding which a continuation for an indefinite period of time has been established by judicial decision, then the lessee may object to the termination and demand from the lessor continuation of the lease for an indefinite period of time. If the circumstances that were decisive for continuation have changed, then the lessee may demand continuation of the lease only under section 574; trivial changes are disregarded.
(3) A deviating agreement to the disadvantage of the lessee is ineffective.