John Cowan replied in response to Pam Chestek's comment:
> Consider a work available under GPL+proprietary terms, where you get to do 
> non-GPL things if you have paid.  Then it would not be enough to show that 
> the work was available under a proprietary license to allow you to download 
> it and do those things.


What non-GPL things are you talking about? Probably I'm just confused by the 
distinction you are trying to make with Pam. You've driven me into litigation 
fantasies....

The author of a work can license it any confusing and profitable way she wants. 
She can dual- and triple-license it. She can even permit her customers to avoid 
conditions of the GPL under which she also licensed her original work. 

But a more general GPL work available publicly (e.g., Linux) is and remains 
under the GPL forever. Restricting copyright for that GPL work (or derivative 
works thereof) is not allowed by the author of the original GPL work. So says 
the GPL.

It becomes confusing when a company adds *incompatible* proprietary terms to 
the GPL for a publicly available work. Is this a contract that any company can 
negotiate with its customers? Is that ever effective at restricting GPL 
freedoms?

I think Pam is correct: "A license attaches to the intangible copyright, not to 
the tangible copy of the work you received." This means that, if you can find a 
GPL-licensed work in the wild, help yourself to it under the terms of the GPL 
even if you also bought a proprietary license somewhere. That is not a 
*copyright license* violation.

But I'd also try to avoid *contractual* litigation by never agreeing to 
*restrictive* proprietary contracts for GPL software. Don't contract away your 
free software. I've never seen anyone actually try to do that, which is why I'm 
confused by John Cowan's comment.

/Larry


-----Original Message-----
From: John Cowan [mailto:co...@mercury.ccil.org] 
Sent: Saturday, September 5, 2015 11:25 AM
To: license-discuss@opensource.org
Subject: Re: [License-discuss] Companies that encourage license violations

Pamela Chestek scripsit:

> I think this statement is a fallacy, but I'm happy to hear other 
> opinions. A license attaches to the intangible copyright, not to the 
> tangible copy of the work you received. So as long as I can show that 
> the same copyrighted work was available under a license, and that I am 
> in compliance with the license, then I am a licensed user no matter 
> where I got my copy of the work.

That can't be right.  Consider a work available under GPL+proprietary terms, 
where you get to do non-GPL things if you have paid.  Then it would not be 
enough to show that the work was available under a proprietary license to allow 
you to download it and do those things.

-- 
John Cowan          http://www.ccil.org/~cowan        co...@ccil.org
How they ever reached any conclusion at all is starkly unknowable
to the human mind.        --"Backstage Lensman", Randall Garrett
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