A note before starting
This article is general information, not legal advice. Copyright law differs between countries, changes over time, and depends on the facts of each case. For decisions that matter, such as publishing a book or a course, consult your institution’s copyright office, a library or an official government source.
Copyright in brief
In most countries, copyright arises automatically when someone creates an original work: a text, image, recording, diagram or piece of software. It does not usually require registration or a copyright symbol. By default, the creator, or sometimes an employer or commissioner, holds exclusive rights to copy, share, adapt and publicly perform the work. Anyone else needs permission, unless a legal exception applies, or the work has entered the public domain.
Ideas and facts are generally not themselves protected; the particular way they are expressed is. That is why you can learn a fact from a textbook and explain it in your own words, but cannot simply copy the textbook’s explanation.
What an open license does
An open license is a standing permission granted in advance by the rights holder. Instead of each user asking, the creator says: “you may do these things, provided you meet these conditions.” The license works through copyright; it does not remove it. The creator still holds the copyright, and the permissions apply only if you follow the conditions.
The most widely used set is the Creative Commons family. Their conditions combine in different ways:
| Element | What it generally means |
|---|---|
| Attribution (BY) | Credit the creator, link the license, note changes |
| ShareAlike (SA) | Share adaptations under the same or a compatible license |
| NonCommercial (NC) | No commercial use |
| NoDerivatives (ND) | Share copies but no changed versions |
| CC0 | Rights waived as far as the law allows |
Licenses are generally understood to be irrevocable for people who obtained the work while it was offered under them, provided they follow the terms. A creator can stop offering new copies under the license, but that does not usually cancel permissions already given.
Attribution in practice
Attribution is the one condition most licenses share. A good credit usually includes the title, the creator, a link to the source, the license and its link, and a statement if you modified the work. Failing to give proper credit is the most common way people breach a license by accident. If you cannot find the creator’s name, record where you found the item and look for the license statement anyway.
Where problems usually arise
The NonCommercial puzzle. There is no single agreed line for what counts as commercial. Using material in a free class is generally seen as non-commercial, but selling a course, running ads around it or using it in a fee-charging program may raise questions. If you are unsure, ask the creator or choose another resource.
Mixing licenses. Combining works under different conditions can be complicated. If one source is ShareAlike, the resulting combined work typically needs that same license, and this may conflict with another source’s conditions. Two different ShareAlike licenses are not always compatible with each other. An ND source cannot be merged into an adaptation at all. When combining, the most restrictive condition tends to set the limits, so list each source’s terms before you begin.
Third-party content inside a resource. A textbook may be openly licensed but contain a photograph used with special permission, which cannot be reused under the book’s license. Look for credits near images and notes on exceptions.
Wrongly labeled material. Sometimes someone puts an open license on content they do not own. You cannot always detect this, but warning signs include copied commercial images, unclear authorship and missing source information. Prefer sources that identify creators.
Out-of-date or missing license information. If a page lacks a license statement, assume all rights are reserved until you confirm otherwise. Keep a note or screenshot of the license at the time you accessed the resource, since pages change.
Related ideas worth knowing
Public domain. Works whose copyright has expired or never applied can be used freely, though the length of protection varies between countries, so a work may be free in one place and protected in another. A modern edition or translation of an old work may carry its own new copyright.
Fair use and similar exceptions. Many countries allow limited use of copyrighted material for purposes such as quotation, criticism or teaching, under conditions that differ widely. These exceptions are narrower and more fact-dependent than people expect, and are not the same as an open license. Do not assume a classroom exemption covers publication online.
Moral rights. In some countries creators keep rights such as being named or objecting to distorting changes, separate from economic rights.
Employer ownership. Teachers’ works created as part of their job may belong to the employer or be subject to institutional policy. Check before you release anything.
Privacy and personal data. Images or recordings of identifiable students raise separate privacy and consent matters that licenses do not address.
Practical habits
- Read the license text, not just the badge.
- Record the source, license and access date of everything you reuse.
- Keep credit lines with the item wherever it travels.
- Prefer permissive and compatible licenses when you create.
- Leave out any item you cannot confirm.
- Ask a copyright adviser when the stakes are high.
A realistic summary
Open licenses make sharing and adapting easier, but they do not remove the need for care. Most licensing trouble comes from small oversights, such as a missing credit or a mixed-in image, rather than deliberate misuse. A routine of checking and recording is enough to avoid nearly all of it, and where doubt remains, the safest step is to ask or to choose something else.