Answer
Based on official Jordanian legal texts
Yes — fully: once the child's lineage from the father is established by a final ruling, the father owes the child maintenance like any other child, with no reduction because the lineage was established judicially rather than through a registered marriage from the start.
What does maintenance cover?
Child maintenance under Jordanian law covers the child's essential needs: housing, food, clothing, education, medical care, and what is customary for a child in similar circumstances. It is the child's own right: the mother cannot waive it by settlement or concession, and it does not lapse upon her remarriage.
How is it assessed?
There are no fixed amounts; the court balances the father's means (income, property, obligations) against the child's needs and the living standard of similar children. It can later be adjusted as needs grow or income changes.
Is past maintenance recoverable?
A claim may reach back over prior periods within the limits and timeframes the law and the courts prescribe — details a lawyer manages case by case. Do not postpone the claim assuming everything missed returns automatically.
What if the father refuses to pay?
A maintenance judgment is an enforceable instrument: executed through the Execution Department by attachment of funds and income, escalating to imprisonment of a capable refuser as the law provides. A debtor whose insolvency is documented is treated under different rules.
An important practical sequence
The maintenance claim is built on established lineage, so the usual order is: the lineage ruling first, then the maintenance claim (your lawyer can arrange the optimal sequencing). That is how an established lineage turns from a document into the actual monthly income the child lives on.
This is a general answer based on available Jordanian legal sources and does not replace advice from a specialized lawyer in an actual dispute.