Failure by Landlord to declare an Event of Default upon occurrence thereof, or delay in taking any action in connection therewith, shall not waive such Event of Default, but Landlord shall have the right to declare such Event of Default at any time after its occurrence. To be effective, a waiver of any provision of this Lease, or any default, shall be in writing and signed by the waiving party. Any waiver hereunder shall not be deemed a waiver of subsequent performance of any such provision or subsequent defaults. The subsequent acceptance of Rent hereunder, or endorsement of any check by Landlord, shall not be deemed to constitute an accord and satisfaction or a waiver of any preceding Event of Default, except as to the particular Rent so accepted, regardless of Landlord’s knowledge of the preceding Event of Default at the time of acceptance of the Rent. No course of conduct between Landlord and Tenant, and no acceptance of the keys to or possession of the Premises by Landlord before the Expiration Date, shall constitute a waiver of any provision of this Lease or of any Event of Default, or operate as a surrender of this Lease.