as of right - Wiktionary
(law) by virtue of an entitlement or authority which arises from certain legal conditions or circumstances; by operation of law. To acquire a right of way by long use, a claimant must show use as of right, peaceably, openly and without permission. He may appeal the ruling as of right.
As Of Right | Definition of As Of Right by Merriam-Webster
As of right definition is - according to what is legally correct.
(law) by means of a legal entitlement, rather than through extenuating circumstances. He may appeal the ruling as of right.
as of right - Legal Definition
adj - Description of a court action that a party may take without permission of the court, as opposed to requiring leave of court.