Definition
Ex patientia is a Latin maxim meaning "by sufferance" or "by tolerance." It describes a legal condition or relationship that arises not from express grant, right, or agreement, but from the passive acquiescence or forbearance of another party. Where a right, possession, or interest exists ex patientia, it persists only because the party who could object or act against it has chosen not to do so — not because any formal entitlement underlies it.
The concept most commonly appears in property and tenancy contexts. A tenant who holds over after the expiration of a lease, and whose continued possession is neither expressly authorized nor expressly challenged, may be said to hold ex patientia — by the sufferance of the landlord. The landlord's inaction does not create a new tenancy of right; it merely tolerates the ongoing possession. This is the foundation of the tenancy at sufferance, one of the oldest and most fragile possessory estates in the common law.
More broadly, ex patientia captures the principle that legal tolerance is not legal recognition. A position held by sufferance is inherently precarious: it can be terminated at any moment by the party whose forbearance sustains it.
Common Language
Modern common usage (Wiktionary): "Patience" derives from the Latin patientia, meaning the capacity to endure delay, trouble, or suffering without complaint.
Historical common usage (Webster's 1913): "Patience" is defined as the quality of bearing pain, delay, or provocation without irritation or complaint; calm endurance.
The gap matters here. In ordinary English, patience is a virtue — an active, admirable quality. In the legal maxim ex patientia, the Latin root carries its older, more passive sense: to endure, to permit, to suffer something to continue. The legal meaning has nothing to do with emotional forbearance or admirable restraint. It describes a legal posture — deliberate inaction that allows a situation to persist without either approving or regularizing it. A researcher encountering ex patientia in historical sources should not read "patience" in its modern moral sense but rather as "sufferance" in the technical property law sense.
Common Confusion
Ex patientia is closely related to — but distinct from — ex licentia (by license) and ex concessione (by grant). Where a right exists ex licentia or ex concessione, there is some affirmative act of permission or bestowal. Ex patientia involves no such act; the party tolerating the situation has simply done nothing. This distinction matters legally because rights held ex patientia generally carry no enforceable claim against the tolerating party and create no estoppel without additional elements. Researchers should also distinguish ex patientia from acquiescence as a formal equitable doctrine, which requires knowledge, opportunity to act, and conduct implying consent — a higher threshold than mere passive sufferance.
Why It Matters in Research
Ex patientia appears most frequently in older English and early American legal sources discussing landlord-tenant law, particularly in treatises and pleading manuals that address tenancies at sufferance. Researchers working in property law history, medieval or early modern English land law, or the doctrinal foundations of holdover tenancy will encounter this phrase in Latin-heavy text where it functions as shorthand for the entire concept of possession by toleration rather than by right.
The phrase is rare in modern American case law and nearly absent from contemporary statutory text. When it appears in nineteenth-century American sources, it is typically carried forward from English common law authorities and may reference Fleta or Bracton-era doctrine without citation to anything more accessible. Researchers should treat such passages as signaling deep common law roots and should trace the concept forward through the doctrine of tenancy at sufferance rather than searching for ex patientia as a live legal term.
The key navigational trap: sources may use "sufferance," "tolerance," "patience," or "forbearance" as translations without flagging that ex patientia is the underlying Latin term. Searches limited to the Latin phrase will undercount the concept's presence in the corpus. Search for the concept, not just the phrase.
Historical Dictionary Support
Burrill's Law Dictionary provides only the compressed entry: "L. Lat. ance. Fleta, lib. 4, c. 18, § 1. By suffer-" — evidently a truncated entry meaning "by sufferance," with a cross-reference to Fleta, the thirteenth-century English legal treatise. The citation to Fleta places the term squarely in the medieval common law tradition and confirms its deep antiquity. Burrill's compression reflects how thoroughly the concept had been absorbed into property doctrine under its English name by the time his dictionary was compiled; the Latin phrase needed only a brief notation because practitioners would have encountered the substance under "tenancy at sufferance" long before encountering the Latin tag.
No other historical dictionary in the Law Mind corpus covers this term independently, which is consistent with its status as a maxim of deep antiquity rather than a term of art requiring extended definition in later legal dictionaries.
Encyclopedia Cross-Reference
The term ex patientia does not map directly to any single Law Mind Encyclopedia entry. For the doctrine most closely associated with this concept — possession held by toleration rather than right — see:
The Law Mind Family Law Encyclopedia: Domestic Violence — Emergency / Ex Parte Orders of Protection (family_171), for general background on ex parte procedural postures in modern practice (tangential).
The concept of ex patientia in property law is best pursued through treatise material on tenancy at sufferance rather than through encyclopedia entries on ex parte procedure, which concern a different Latin ex- construction entirely.