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Re: GPL "+" question

On Sat, 30 May 2015 23:24:53 +0200
Ángel González <keisial@gmail.com> wrote:
> On 30/05/15 03:30, Riley Baird wrote:
> >>>> Only the copyright holder can change what a *work* is licensed as.
> >> Unless the copyright holder grants the permission to do so, I would
> >> say...
> > Let's say I hold copyright on a work, and I grant someone else
> > permission to change the license of a work. Who would enforce the
> > second license? Only a copyright holder can enforce their copyrights.
> IMHO you would be the one responsible for enforcing the license...

Exactly. So, if a work is originally licensed under GPL-2+ and Person A
makes a copy and gives it to Person B under GPL-3. Now consider that
Person B gives a copy to Person C under GPL-2+. Person A can't enforce
the original copyright holder's copyrights. I find it difficult to
believe that the original copyright holder would enforce Person A's

> unless you also
> granted (delegated?) the right of enforcing the work license to someone 
> else.

I'm not sure that you can grant the right of enforcing the license to
someone else, otherwise why wouldn't copyleft authors just let
give everyone the right to enforce their license?

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