Membership for ATPN is for life as long as you renew your membership annually. Your dues cover a period of 12 months after payment. Upon completion of the 12 months, an invoice for renewal will be sent to you and once paid, your membership will remain active. However, if payment is not received 30 days after invoicing you, your membership will be de-activated and will only be activated when payment is received. If payment is not received within 6 months, it is assumed that you are no longer interested and your details will be permanently deleted from our database.