The KDE logo can be used freely as long as it is not used to refer to projects other than KDE itself. There is no formal procedure to use it. Copying of the KDE Logo is subject to the LGPL copyright license. Trading and branding with the KDE Logo is subject to our trademark licence.
Is the KDE logo legally protected by the way?
i just looked and it says
source
OK, so it is trademarked and the company is using it illegally (not that I believe KDE e.V. should sue, probably a waste of time and money).
Yes, but is it copyrighted in Turkey(just guessing)
Good point.