Definition
A call patent is a land patent whose boundaries are not fully surveyed and physically marked on the ground at the time of issuance. The corners of the tract are designated by stakes rather than established monuments, or the boundary lines themselves have not been run out and marked in the field. In essence, the patent calls for a location but leaves the actual physical demarcation of the land incomplete or uncertain.
The term belongs to historical land law, particularly the law of original grants and land titles in states with a legacy of government land surveys and patent conveyances. It describes a defect or condition in the survey process, not in the legal validity of the patent itself — the grant may be legally effective while remaining physically unconfirmed on the ground.
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Common Confusion
The word "call" in this context is a surveying term of art referring to a description in a deed or patent — a directional course, distance, or monument referenced to identify a boundary. A call patent should not be confused with a patent that is legally "called into question" (challenged or disputed). The term also has no connection to modern intellectual property patent law. Researchers encountering "call patent" in historical land title records should read it as a surveying deficiency description, not a legal challenge to the patent's validity.
Separately, "call patent" should not be confused with the distinction between patent and latent ambiguity in contract interpretation — though both concepts involve uncertainty in a document, patent ambiguity refers to uncertainty apparent on the face of an instrument, while a call patent refers to a specific surveying condition in land grants.
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Why It Matters in Research
**Jurisdictional concentration.** Call patents appear almost exclusively in Kentucky case law and in other states with early land patent systems based on irregular surveys — Virginia warrants, Tennessee entries, and similar Southern and border-state grant systems. Researchers working with land titles in these jurisdictions, particularly pre-statehood grants and early nineteenth-century conveyances, will encounter the term in title chains and boundary disputes.
**Survey law context.** The significance of a call patent lies in what happens when the land must be located. Courts in patent boundary disputes had to decide how to honor a call patent's boundaries when corners were stakes (which rot or disappear) rather than durable natural monuments. The strength of a call in a patent — whether a stake, a tree, a watercourse, or a neighbor's line — affected which description controlled in a conflict. A call patent creates downstream ambiguity that resurfaces every time the land is conveyed, divided, or litigated.
**Traps in historical sources.** The Bouvier citation traces to a Kentucky case (142 Ky. 561), placing this firmly in early twentieth-century state land law. Researchers should not assume the term carries the same meaning across all jurisdictions or time periods. In states using the federal rectangular survey system (township and range), the concept has little relevance because federal surveys established physical monuments before patents issued.
**Chain of title research.** When tracing title through a call patent, a researcher must look beyond the patent instrument itself to any subsequent survey, agreed boundary, or judicial location that fixed the stakes' positions. The call patent is often only the beginning of a location dispute, not its resolution.
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Historical Dictionary Support
Bouvier's Law Dictionary provides the only direct definition among standard legal reference sources, and it is spare: a call patent is one whose corners are "all stakes, or all but one, or whose lines are not run out and marked at the time." The single case citation anchors the definition in Kentucky land law. No competing or elaborating definitions appear in Black's or other major dictionaries, which reflects the term's regional and historical specificity.
Bouvier's definition does useful work by distinguishing between two related conditions — unstaked corners and unrun lines — treating them as degrees of the same underlying problem: the patent describes land that has not been physically located with durable markers. What the dictionary does not address is the legal consequence, which was worked out case by case in state courts applying rules of survey construction. Researchers should treat Bouvier here as an entry point, not a complete statement of the law.
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Jurisdictional Note
Call patents are a creature of Southern and border-state land law, with the clearest doctrinal development in Kentucky, Virginia, and Tennessee. States operating under the federal Public Land Survey System (PLSS) — where the government surveyed land before issuing patents — do not produce the same type of call patent dispute, because physical monuments were generally established as a condition of the grant.
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Encyclopedia Cross-Reference
contracts_39: Interpretation — Ambiguity (Patent vs. Latent) and Contra Proferentem (The Law Mind Contracts & Commercial Law Encyclopedia) — relevant for distinguishing the surveying sense of "call patent" from the contract-law concept of patent (facial) ambiguity in instruments.
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