overdue fees meaning in English

超储未付费

A payer shall , when handling the cancellation procedures , settle the social insurance premiums , interests , overdue fees and fines that should be paid
缴费单位在办理注销手续时，应当结清应缴纳的社会保险费、利息、滞纳金和罚款。
2 a certificate which has lapsed for failure to pay the annuity may be renewed within six months from the last day of the month when the certificate was granted , provided the overdue fee is paid at a double rate at the patent office
2因未缴年费而失效的证书，只要在证书授与那月最后一日起算的六个月内按双倍费率向专利局缴纳逾期未付的费用，即可展延。