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The Apache 2.0 license is a license created by the Apache Software Foundation. Use this tag when the item in question relates to this license.

3 votes

How does AL2 propagate? Can I sublicence under more permissive terms?

But where is stated that – in the license between the third party and myself – I must require them to adhere to the Apache License? The original copyright holder offered certain permissions to mo …
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2 votes

License dispute

First, let me be clear that a person who modifies your Apache-licensed work is free to release their own changes under the GPL. The Apache 2 License is a permissive license that is compatible with the …
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5 votes

Accidentally used ASF license header instead of normal Apache License V2 header

I'm not a lawyer, but I don't find this mistake alarming at all. In the worst possible case, that such a statement really did license the work to the ASF, the ASF probably wouldn't ever exercise that …
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7 votes

Open-Source code made proprietary by someone else without proper attribution (Apache License...

Even in the event that your friend is correct, it sounds like the author(s) of the new mod have not yet released it, so they are not yet committing copyright infringement for failure to attribute any …
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2 votes
Accepted

API license question

As you've said, the GeoIP2 Java API is licensed under the Apache 2.0 license. MaxMind has clearly granted you a license to distribute and modify the software under those terms. The terms of the Apache …
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3 votes
Accepted

Modifying file without copyright under Apache 2.0

The attribution requirement is in section 4(c) of the Apache 2.0 license: c. You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and …
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1 vote

Do I lose the right to use my patent after contributing to a project with Apache License 2.0?

Preface: I'm no longer sure this answer is correct, since the patent license terms only apply to the specific "Work" you are offering, and do not include the right to "modify" or similar. However, thi …
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5 votes
Accepted

What exactly does "If You […] litigation is filed" from Apache2 license mean?

Your understanding is close to correct. The rights retracted are limited to patent rights, not rights to use/modify/distribute the software in general. When an author licenses their work under the A …
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5 votes
Accepted

Generated content protected as well?

The GPL FAQ has an item describing this case (which has applicability to copyright law in general, not just the GPL): Is there some way that I can GPL the output people get from use of my program? Fo …
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11 votes
Accepted

Include Appendix of Apache 2.0 in LICENSE file?

You may freely omit the Appendix. From the Apache License 2.0: Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof [...] provided that You meet the …
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14 votes

Does a copyright notice in a file header affect the licensing?

A "license" simply means legal permission to do something from a rightsholder. The relevant question is: if the rightsholder sued you for exercising some right (e.g., copying or modifying their copyri …
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17 votes
Accepted

Can I link a Apache 2.0 library into software under GPLv2?

(Here's my best guess. This is obviously a very hairy problem to work through, and I've tried my best to reduce the problem down to basic principles. However, I may gotten some of those basic principl …
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2 votes

Query on distributing Application under Apache 2.0 license which dynamically links with LGPL...

LGPL copyleft only applies to modifications to the library itself, not to applications that use the library. Therefore, your application may be under virtually any license whatsoever (including a nonf …
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3 votes
Accepted

What entities are eligible to copyright a project?

Only a legal entity can hold a copyright. However, it is worth noting that your copyright notice is not legally significant, since it has virtually no legal effect. Generally speaking, in an overwhelm …
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3 votes
Accepted

Can I use GPL license, if my program uses libraries with MIT and MPL licenses?

The X11/MIT license, the Apache 2.0 license, and the Mozilla Public License 2.0 are all compatible with the GNU GPL version 3, which means you may include code licensed under those various licenses in …
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