Family Law Questions? Ask a Family Lawyer Online.
There are two issues: the first is whether there is a pending court order on child support. If your father was ordered to pay child support then he does owe the back child support and that obligation won't go away (regardless of how much time passed) and indeed he'll owe interest on the arrearage. The second issue, however, is that the duty of support is technically owed to your mother (if there was a court order) so it is up to her to enforce the order.
Please hit "accept" so the company pays me. Thanks so much.