Contributory copyright infringement
way of imposing secondary liability for infringement of a copyright
Contributory copyright infringement is a way of imposing secondary liability for infringement of a copyright. It is a means by which a person may be held liable for copyright infringement even though they did not directly engage in the infringing activity. It is one of the two forms of secondary liability apart from vicarious liability. Contributory infringement is understood to be a form of infringement in which a person is not directly violating a copyright but induces or authorizes another person to directly infringe the copyright.
This doctrine is a development of general tort law and is an extension of the principle in tort law that in addition to the tortfeasor, anyone who contributed to the tort should also be held liable.
Requirements
The requirements for fulfilling the threshold of contributory infringement and imposing liability for copyright infringement on a party are:
The defendant having knowledge of a direct infringement; and
The defendant materially contributing to that infringement.
Contributory infringement leads to imposition of liability in two situations. First situation is when the defendant, through their conduct, assists in the infringement, and the second situation is when the means for facilitating the infringement such as machinery is provided by the defendant.
Knowledge
The knowledge requirement for contributory infringement is an objective assessment and stands fulfilled if the defendant has actual or constructive knowledge of an infringement, i.e., if they has reason to believe that an infringement is taking place. But, constructive knowledge need not be imputed to the defendant if the product was capable of significant noninfringing uses.
The public source identifies “Contributory copyright infringement” as way of imposing secondary liability for infringement of a copyright. This brief keeps that definition visible, then builds a research path around Contributory, copyright and infringement.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 4, 2026. The linked authority identifier is Q30325042. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Contributory copyright infringement” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.