Knowledge Tree
public domain
Also known as: public domain license
Facts (26)
Sources
Open-source license - Wikipedia en.wikipedia.org 10 facts
claimHighly permissive licenses described as "public domain" may legally function as unilateral contracts that offer something but impose no terms.
claimUnless an original work is in the public domain, a derivative work can only be distributed with the permission of every copyright holder.
claimAttorney Lawrence Rosen argues that copyright laws were not written with the expectation that creators would place their work into the public domain, meaning intellectual property laws lack clear paths to waive a copyright.
claimWhen a copyright expires, the work enters the public domain and becomes freely available to anyone.
claimOutside parties could potentially control public domain works via patent or trademark law because public domain waivers lack the protections of formal licenses.
claimPublic domain content can be used in any project because there is no copyright claim, but code acquired under license terms cannot be waived into the public domain.
claimCopyright waivers cannot impose a disclaimer of warranty or liability because public domain content is available to everyone without a formal license agreement.
accountIn the early history of computing, software was often given away with hardware and was not covered by copyright, effectively placing it in the public domain.
claimIn jurisdictions that do not accept a public domain waiver, permissive licenses take effect as a legal alternative.
quoteThe US Supreme Court described using trademark law to restrict public domain content as "mutant copyright".
Open Source Licenses: Definition, Types, and Comparison solutionshub.epam.com Feb 3, 2023 5 facts
claimOpen-source software is distinct from the public domain in that open-source software is governed by an open-source license, which explicitly defines the terms for free use, modification, and distribution.
claimWorks enter the public domain when a copyright has expired or when the creator chooses to relinquish their rights to the work.
claimOpen-source licensing provides a more structured framework for sharing and collaboration than the public domain.
claimPublic domain works are not restricted by copyright and can be used, modified, and distributed without restriction.
claimThe primary difference between open-source software and public domain works is that open-source software is governed by a license with usage rules, whereas public domain works have no restrictions.
What are Open Source Licenses and How Do They Work? blackduck.com 2 facts
claimSoftware is typically protected by copyright, which requires permission from the creator or copyright holder for use, unless the software is in the public domain.
claimUnlicensed code is not automatically in the public domain and retains copyright protections by default, meaning users must obtain explicit permission to use it and should treat it as proprietary code.
Open Hardware Licenses - P2P Foundation Wiki wiki.p2pfoundation.net Jun 17, 2015 2 facts
claimThe Open Architecture Network allows users to choose any Creative Commons license, including public domain, for architectural designs and plans.
claimThingiverse allows users to choose between standard copyright, Creative Commons licenses, GPL, or public domain for digital designs of physical objects.
Governance of open source software: state of the art - Springer Nature link.springer.com Jun 9, 2007 2 facts
claimThe Creative Commons corporation, founded by Lawrence Lessig, created a systematic licensing framework that provides a variety of public-domain-like commons for intellectual resources.
claimBSD and BSD-like licenses regulate a source code commons that is almost unregulated and nearly identical to the public domain, requiring only proper authorship notification.
Open Source Licenses: Types and Comparison - Snyk snyk.io 1 fact
claimMany software buyers and new developers incorrectly believe that 'open source' means software is available to use, copy, modify, and distribute without restriction, often confusing it with public domain or shareware.
Free and open-source software - Wikipedia en.wikipedia.org 1 fact
claimSoftware licensed under FOSS licenses is considered part of the public domain because these licenses meet the requirements of either the Open Source Initiative or the Free Software Foundation, which are criteria for neutral voluntary licenses.
What Is Open Source Software? - IBM ibm.com 1 fact
claimOpen source software is freely available to the public but is not in the public domain, which is a legal intellectual property category devoid of ownership rights.
Lesson 3: licenses and open science hardware ucla-imls-open-sci.info Jun 13, 2025 1 fact
claimOpen licenses differ from the public domain because they retain copyright while granting specific permissions and imposing obligations, whereas public domain tools like Creative Commons Zero (CC0) waive all rights.
Software License Types Explained: Open and Closed Source sonatype.com Apr 26, 2023 1 fact
claimComponents labeled as public domain may contain elements with different licenses, creating hidden compliance obligations for organizations.