If the landlord accepts partial rent from the tenant, knowing that the tenant is in noncompliance with the lease agreement, either because of nonpayment of rent or due to some other reason, the right to evict the tenant during that rent period is usually waived. The landlord could have the tenant sign a paper indicating that partial acceptance on the part of the landlord waives any rights the tenant would otherwise have to claim partial payment. Such waivers are valid in many jurisdictions.