Definition
The act by which a person obtains ownership or a property interest in something, and, by extension, the thing itself that is obtained. Legal usage carries two primary senses:
1. As a process: The legally recognized act of acquiring title or rights in property, whether real, personal, intellectual, or corporate.
2. As a result: The property interest or asset obtained through that process.
Within property law, the term has historically been organized around a foundational structural division:
Original acquisition — where the acquiring party obtains title in something not previously owned by any other person in its current condition. Classic examples include title by occupancy of unowned land, accession, and the grant of patent or copyright protections arising from individual creative labor.
Derivative acquisition — where title or property interest passes from one person to another. The acquiring party's rights flow through, and are therefore limited by, the prior owner's rights. Conveyance, inheritance, assignment, and corporate mergers and acquisitions all fall within this category.
In modern corporate and transactional law, acquisition has taken on additional weight as a term of art describing a transaction in which one entity obtains control of another — typically through purchase of assets or purchase of a controlling equity stake — distinct from, though related to, a merger.
Common Language
Modern common usage (Wiktionary): The act or process of acquiring; the thing acquired or gained; a gain.
Historical common usage (Webster's 1913): The act or process of acquiring; also the thing acquired or gained, as in learning being an acquisition.
The common and legal meanings track each other closely in the abstract, but the legal term carries structural precision the common meaning lacks. In law, acquisition is not merely the fact of obtaining something — it carries implications about title, the mechanism by which ownership is established, and the rights and burdens that attach depending on whether acquisition is original or derivative. A researcher treating "acquisition" as a simple synonym for "getting something" will miss the doctrinal work the term is doing in a source.
Recognized Forms
/SUBTYPES
Original Acquisition: Title arising without derivation from a prior owner. Occupancy, accession, and intellectual property creation are the recognized categories in the historical literature.
Derivative Acquisition: Title obtained from a prior owner through voluntary transfer (sale, gift, assignment) or operation of law (inheritance, judicial sale). The acquiring party steps into the prior owner's legal shoes and takes subject to encumbrances and defects in that prior title.
Corporate/Asset Acquisition: In transactional law, the purchase of a business entity's stock or assets, treated as a distinct transaction type from a statutory merger. An asset acquisition raises specific questions of successor liability not present in the classical property law framework.
Why It Matters in Research
The original/derivative distinction is the conceptual engine behind a wide range of property law doctrines, and failing to notice which type of acquisition a source is discussing will produce misreadings. Rules about title defects, adverse claims, and bona fide purchaser protections apply differently depending on whether acquisition is derivative. The distinction also governs what encumbrances survive a transfer.
In intellectual property research, "original acquisition" links acquisition doctrine to the creation rationale for patent and copyright — a connection the historical dictionaries draw explicitly that modern corporate sources often leave implicit.
In corporate and transactional research, acquisition has expanded well beyond its classical meaning. The modern usage in mergers-and-acquisitions practice (M&A) maps only loosely onto the original/derivative framework. An asset acquisition in the M&A sense is a derivative acquisition in the classical sense, but the corporate law questions it raises — successor liability, assumption of contracts, treatment of employees — are governed by a body of doctrine that the property law framework does not address. Researchers moving between historical property sources and modern transactional sources should expect a vocabulary shift.
Watch also for acquisition appearing as one half of the phrase "mergers and acquisitions," where it functions almost as a term of art for the transactional practice area rather than describing a legally precise transaction type. Context determines whether precision is required.
Historical Dictionary Support
The historical dictionaries are in close agreement on the core definition and the original/derivative division. Black's (both editions), Bouvier's, and Rapalje & Lawrence all present the same two-part structure with near-identical language, suggesting a settled consensus by the late nineteenth century. Burrill adds useful emphasis on the lawful-title dimension — acquisition as gaining a thing "according to some rule of law" — which helpfully distinguishes legal acquisition from mere possession or taking.
The historical sources consistently use patents and copyrights as the exemplary cases of original acquisition, reflecting the doctrinal understanding that intellectual property rights arise from individual creative labor rather than from transfer. This framing remains useful for understanding the foundational logic of IP creation doctrine.
What the historical dictionaries do not address is the modern corporate usage. The M&A sense of acquisition — an entity-level transaction governed by securities regulation, corporate statutes, and contract law — postdates these sources entirely. Researchers should not expect coverage of successor liability, deal structure, or regulatory approval requirements in the classical dictionary literature.
Jurisdictional Note
The original/derivative distinction is a common law framework applied broadly across American and English jurisdictions. The modern corporate acquisition framework varies significantly by state of incorporation (particularly Delaware) and by federal regulatory overlay (Hart-Scott-Rodino review, securities law disclosure requirements). No single jurisdictional standard governs all acquisition transactions.
Encyclopedia Cross-Reference
Mergers and Acquisitions — Asset Acquisitions and Successor Liability (The Law Mind Business Organizations & Corporate Law Encyclopedia)
Mergers and Acquisitions — Triangular Mergers (The Law Mind Business Organizations & Corporate Law Encyclopedia)
Mergers and Acquisitions — Short-Form Mergers (The Law Mind Business Organizations & Corporate Law Encyclopedia)