What legal principle gave marbury a right to some remedy under law?

A principle stating that where a right exists, a corresponding remedy for any violation of that right must exist as well.

Explanation:

Marbury found in section 13 of the 1789 Judicial Law a paragraph that gave him the right to a legal remedy against the case he was involved in. In this section, Marbury realized the legal principle that stated that where a right exists, a corresponding remedy for any violation of that right must also exist.