[cc-licenses] input requested: BY-SA/GPL compatibility - license scope

Arne Babenhauserheide arne_bab at web.de
Tue Feb 24 14:02:48 EST 2015


Hi,

Am Montag, 23. Februar 2015, 16:38:04 schrieb Andrew Rens:
> > I think the easiest step would be to explicitly forbid using a CC
> > by-sa file under GPL, if that would require patent rights which the
> > reuser cannot grant. You can only use a CC by-sa work under GPL if you
> > are able to comply with the GPL.
> 
> But how would this be implemented?

By just writing it: If you hold a patent which would prevent others
from utilizing their rights under the GPL, you are not allowed to
distribute CC by-sa content under GPL.

> > This might still create some walled gardens, but better a walled
> > garden (which can be opened by granting the patent rights to the
> > community) than legal uncertainty.
> >
> 
> But legal uncertainty remains.

This is the same when you let a subsidiary create some software in a
jurisdiction which does not have software patents and then restrict
people in a country with software patents from utilizing their rights.

> In jurisdictions that grant software patents any number of people could
> obtain patents that would prevent the use of the GPLed work, and they would
> remain able to use those patents to prevent the use of the GPLed work
> regardless of the GPL patent grant. If the licensor of the CC By SA work
> holds  a patent prohibiting then she would be able to use it to prevent the
> use of the GPL work if the CC By SA work is not included in the GPLed work.

But she would not be allowed at all to distribute the GPL’ed work
(because she would not be allowed to distribute the whole under the
GPL if parts of the other code could be covered by the patent, and
would not be allowed to restrict the CC by-sa to a specific
version). She could only keep others from using the CC by-sa code
under GPL.

Best wishes,
Arne
-- 
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Zwei Polizisten sind sofort da und halten ein Transparent davor. 

	"Illegale Szene. Niemand darf das sehen."

Der Mann wird ausgeraubt, erstochen und verblutet, 
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