Definition
In the law of uses (pre-modern property law), an official use is an active use imposed upon a feoffee to uses — the legal titleholder — that requires the feoffee to perform some specific duty with respect to the estate. The term distinguishes this class of use from a passive or simple use, where the feoffee to uses holds title but performs no active function.
The canonical illustration: land is conveyed to A, with directions that A sell the estate and distribute the proceeds among B, C, and D. Because A must act — must sell, must distribute — A retains legal possession of the estate sufficient to carry out that duty. The use is "official" in the sense that it charges the titleholder with an office or function, not merely nominal ownership.
This meaning is entirely historical. The term belongs to the technical vocabulary of pre-Statute of Uses conveyancing and its aftermath. It does not correspond to any modern statutory category, government function, or administrative law concept.
Common Language
Modern common usage (Wiktionary): "Official use" in ordinary English typically refers to use for governmental or institutional purposes, as distinguished from personal or commercial use — e.g., a vehicle designated for official use by a public agency.
Historical common usage (Webster's 1913): Webster's 1913 does not carry a discrete entry for "official use" as a compound term. "Official" is defined as relating to an office or public trust; "use" carries its ordinary sense of employment or service for a purpose.
The gap here is significant. A researcher encountering "official use" in a modern administrative, customs, or intellectual property context is reading an entirely different concept from the term as it appears in historical legal dictionaries. The legal dictionary sense — an active use imposing a duty on the feoffee to uses — is a term of art in medieval and early modern English property law with no surviving operational meaning in contemporary law. The common-language phrase "official use" has developed independently and does not descend from the property-law concept.
Common Confusion
Researchers should be alert to at least two distinct bodies of law that use the phrase "official use" without any connection to the historical property-law concept:
1. Customs and excise law: Many tariff and import statutes exempt goods from duties when imported for "official use" by foreign governments, international organizations, or diplomatic missions. This is a regulatory classification, not a property doctrine.
2. Trademark law: "Use in commerce" doctrine and the question of whether government or institutional use satisfies the use requirement for trademark registration involves "official use" language in some administrative contexts. This bears no relationship to feoffee-to-uses doctrine.
Conflating these bodies of law with the historical property meaning will produce research errors in either direction.
Why It Matters in Research
The primary research trap with "official use" is period confusion. The term appears in Black's, Rapalje & Lawrence, and Bouvier's with a single, consistent definition drawn from Wharton — all three reproduce essentially the same entry. That uniformity signals the term was already settled and somewhat archaic even when these dictionaries were compiled. No substantial doctrinal development was occurring; the dictionaries were preserving a vocabulary item needed to read older sources.
A researcher working in:
— Pre-Statute of Uses materials (English law, roughly pre-1536): "Official use" will appear as a live technical distinction. The Statute of Uses (27 Hen. 8, c. 10) executed most passive uses, transferring legal title to the beneficiary. Active uses — including official uses — were generally preserved precisely because the feoffee had duties to perform that required retained legal title. Understanding whether a use was official or passive is essential to determining what the Statute did to a given conveyance.
— Post-Statute of Uses English property law: The distinction matters for understanding how uses evolved into trusts. Active uses surviving the Statute are ancestors of the modern trust. Historical commentary on this transition will use "official use" in this technical sense.
— American colonial and early republic property law: Conveyancing practice in some colonies tracked English doctrine closely. Researchers in early American land titles may encounter the term in instruments and commentaries before American property law fully shed the uses vocabulary.
— Modern administrative, IP, or customs law: The historical definition is irrelevant. Do not import it.
The Wharton citation common to all three dictionary sources refers to George Frederick Wharton's legal writing on property and uses — researchers tracing the doctrine should follow that lineage rather than treating the dictionary entry as primary authority.
Historical Dictionary Support
Black's Law Dictionary, Rapalje & Lawrence, and Bouvier's Law Dictionary are in complete agreement on this term — a rare degree of unanimity reflecting that they all drew from Wharton's formulation. The identical example (conveyance to A to sell and distribute among B, C, and D) appears verbatim across all three, which is instructive: this is a preserved illustration, not an independently derived definition.
What the historical dictionaries do not address: they give no guidance on how courts treated the boundary between official uses and other active uses, how the doctrine interacted with the Statute of Uses in specific conveyancing disputes, or how the concept mapped onto trust doctrine as uses evolved. For those questions, the dictionaries are a starting point only.
None of the three dictionaries addresses the modern administrative or regulatory senses of "official use" at all — those uses of the phrase postdate the core period these dictionaries were synthesizing.
Jurisdictional Note
The historical property-law concept of official use is English in origin and applies to jurisdictions that received English common law. American courts that addressed uses doctrine in the eighteenth and nineteenth centuries worked within this framework, but the practical significance of the active/passive use distinction diminished as trust doctrine displaced uses vocabulary. Researchers in civil law jurisdictions will not encounter this term in the same technical sense.
Encyclopedia Cross-Reference
For the modern trademark-law context in which "official use" language sometimes appears in connection with use requirements: Trademark Use in Commerce and the Use Requirement (The Law Mind Intellectual Property Encyclopedia, ip_69).