Derivative acquisition describes obtaining a legal right, title or interest from a previous holder, rather than acquiring it originally. In practice, it most often refers to the transfer of ownership of property (land, goods, shares or intellectual property) from one person to another, where the acquirer’s title is derived from, and dependent on, the transferor’s title. Across the UK and Ireland the concept is primarily doctrinal rather than a defined statutory term, and is often contrasted with “original acquisition” (for example, acquisition by occupation, accession or prescription). Key features are: continuity of title; the passing of both benefits and defects in the transferor’s title; and the relevance of priority rules, registration requirements and protection of third-party rights. Typical contexts include conveyancing, corporate asset transfers, voluntary dispositions, succession and security enforcement. In Scotland, derivative acquisition is used within a mixed system that distinguishes original from derivative modes of acquiring real rights, particularly in land and moveable property law. In England & Wales, Northern Ireland and Ireland, the term is more descriptive but is consistent in meaning, especially in property, company, commercial and insolvency practice.