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For questions about works that derive their core from another open work.

7 votes
Accepted

Are derivative works a subset of combined works?

There are two separate kinds of derived works you can create from an LGPL-licensed work: a combined work that includes/uses the LGPL library (per section 4, "Combined Works") a modification of the LG …
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2 votes
Accepted

GPL-2 Derivative works

The glue code and GUI code are original works by their author. When considered in isolation from any other code, they likely not derivative works under copyright law. They don't include any of the GPL …
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7 votes

What stops anyone from taking a derivative of a derivative of a GPLv2-licensed work closed-s...

Your error is in step 2, when Bob licenses the whole work under a permissive license. Bob's derivative is composed of Bob's work and Alice's work. In general, Bob can't change the license on Alice's …
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7 votes
Accepted

Force derivative works to be public

The AGPL comes close, as it creates copyleft obligations for a person whenever they distribute the software or whenever they offer access to a modified version as a network service. (Normally, this is …
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4 votes

Is there a license that requires derivative works to be published using my project's name?

I want to license them in a way that prevents others from publishing derivative works under completely different names in order to make sure that they stay visibly connected to my original work. …
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2 votes
Accepted

If I just look up a solution for a programming problem do I need to cite the source?

There are at least two relevant legal considerations here: De minimis use: use so small it does not merit consideration under the law. I am not aware of any case law indicating where copyright draws …
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3 votes

How do you use GPLv3 icons in non-software artwork?

If you make a derivative work of a GPL work, then the one downstream licensing requirement that the GPLv3 makes of you is in 5(c): You must license the entire [modified] work, as a whole, under th …
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1 vote
Accepted

Indirectly distributed AGPL with FOSS exception compliance

The AGPL requires source-sharing only when someone interacts with a service that is based on AGPL-licensed code (or, when you physically distribute work that includes AGPL-licensed code). If no end us …
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5 votes

Merging parts of another, parallel, fork [MIT]

You are certainly allowed to merge MIT/X11/Expat-licensed code into other code under the same license. (You are allowed to merge such permissively licensed code into virtually anything, including copy …
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13 votes
Accepted

Is ripping off an open source library okay?

Generally, a fork done without consultation of the original project (and without the intent to merge change back upstream eventually) is called a "hostile fork". Performing a hostile fork is -- as its …
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14 votes

Theseus' Paradox applied to code copyright

In the United States, a determination of copyright infringement is based on two broad considerations: the author's access to the original work the new work's similarity to the original work If you …
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8 votes

learning from GPL infects code

In copyright law, expression is copyrightable, and ideas are not copyrightable. In particular, expression is copyrightable only insofar as that expression is distinct from the idea is expresses. This …
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4 votes
Accepted

Creating a game based on a story licensed under CC BY-SA 3.0

For point #1, I'd say generally that yes, your game is a derivative, and would need to be licensed under CC-BY-SA 3.0 as well. Fictional characters are protected under copyright, and reuse of those ch …
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29 votes
Accepted

Is re-encoding an audio or video file permitted under CC-BY-ND?

CC BY-ND 4.0 says in section 2(a)(4): Media and formats; technical modifications allowed. The Licensor authorizes You to exercise the Licensed Rights in all media and formats whether now known or …
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7 votes
Accepted

How to address common FOS license problems? - About creditstealing and ruthless cashcowing

Making your software available under free and open source terms means the legal terms under which you make your software available meet certain standards (namely, the FSF's four freedoms and the OSI's …
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