Hallo,
Commons:Licensing currently says that "trademarked logos" should not be
uploaded to Commons. I'd like to propose to change that.
Short version: Trademarks are very different from copyright. They are
more like "other laws which restrict the free use" of (any) content and
Commons does already allow seals, flags, coats of arms, Olympic symbols,
the Red Cross and Crescent (all of which are protected quite like
"commercial" trademarks) as well as Nazi symbols (the use of which is
extremly restricted in some legislations such as DE, AT, HU).
Long version:
http://commons.wikimedia.org/wiki/Commons_talk:Licensing#Trademarks
Claus
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http://www.faerber.muc.de