Definition
CLA is an abbreviation with two distinct legal meanings depending on context:
1. Contributor License Agreement. A legal instrument, typically a contract or assignment, by which an individual or entity grants a project maintainer, organization, or company the rights necessary to use, modify, distribute, and sublicense contributions made to a collective work — most commonly software, documentation, or other open-source or collaborative projects. The CLA defines the scope of the rights transferred or licensed, representations made by the contributor (such as that the contribution is original and does not infringe third-party rights), and often whether the contributor retains any residual ownership. CLAs are distinct from copyright assignments in that they typically license rather than transfer ownership, though some CLAs function as full assignments.
2. Civil Law Action (or Civil Law Authority, depending on jurisdiction and practice context). In some legal shorthand, particularly in older American and English practice materials, "CLA" appears as an abbreviation for a civil law action or a matter proceeding under civil law principles as opposed to common law or criminal process. This usage is inconsistent and not standardized.
The Contributor License Agreement meaning is by far the dominant modern usage.
Common Language
Modern common usage (Wiktionary): Initialism of Contributor License Agreement.
Editorial note: The common and legal meanings here converge rather than diverge — "Contributor License Agreement" is both the lay and legal label for the same instrument. However, the word "license" carries a specific legal meaning (a grant of permission that stops short of transfer of title) that casual users of the term may underappreciate. A researcher should not assume a CLA is merely a formality; its scope — whether it constitutes a license, an assignment, or something hybrid — is a substantive legal question.
Recognized Forms
/SUBTYPES
Individual CLA: Signed by a natural person contributing in their individual capacity. Common in open-source projects and used when the contributor does not act on behalf of an employer or entity.
Corporate CLA (CCLA): Signed by a legal entity on behalf of its employees or contractors. Covers contributions made by individuals acting within the scope of their employment or engagement.
Inbound/Outbound CLA: Some CLAs are structured around the "inbound equals outbound" principle, under which the contributor grants rights on the same terms the project distributes its work to the public. Others grant the project maintainer broader rights than those available to downstream recipients — a common feature of dual-licensing models.
Why It Matters in Research
Researchers approaching CLA-related materials in the Law Mind corpus should be alert to several complications.
First, CLA as an abbreviation is not exclusive to Contributor License Agreements. Older sources — including Burrill's — use abbreviations loosely, and "CLA" in historical materials may not refer to this instrument at all. The modern CLA as an intellectual property instrument is a creature of late-twentieth-century software licensing practice and will not appear in any nineteenth- or early-twentieth-century legal dictionary under this meaning.
Second, the legal weight of a CLA varies significantly depending on its drafting. Courts have treated some CLAs as bare licenses (revocable, limited), others as exclusive licenses, and others as functional assignments. Researchers tracing case law or secondary materials on CLAs must attend carefully to how the specific instrument was characterized in each source.
Third, CLAs interact with employment law in ways that are easily overlooked. Where a contributor is an employee, the work-made-for-hire doctrine may mean the employer — not the individual — owns the contribution in the first place, making the individual CLA potentially ineffective or duplicative without a corresponding corporate CLA.
Fourth, in international research contexts, CLA enforceability and scope vary by jurisdiction, particularly regarding moral rights (which cannot be waived or licensed in some civil law countries regardless of what a CLA purports to accomplish).
Historical Dictionary Support
Burrill's Law Dictionary does not contain an entry for CLA in the sense of Contributor License Agreement — that concept postdates Burrill by over a century. The fragment appearing in the source material relates to unconnected substantive entries (concerning civil incapacities and fiscal provisions for the crown) and reflects Burrill's dense, cross-referenced style rather than any entry under this abbreviation. Researchers should not treat historical legal dictionaries as authoritative sources on CLA in its modern intellectual property sense.
For historical context on license agreements generally, older dictionaries such as Burrill, Black's (early editions), and Bouvier treat "license" as a permission grant falling short of an interest in property — a characterization that remains foundational to understanding why CLAs are typically structured as licenses rather than assignments.
Jurisdictional Note
In the United States, CLAs are generally governed by contract law and, where rights transfer is involved, copyright law under Title 17 of the U.S. Code. In the European Union, the interaction between CLAs and the moral rights protections of member states' copyright regimes can limit what a contributor may effectively grant, even under a broadly drafted agreement.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Intellectual Property Licensing; Open Source Software Law; Work Made for Hire