You know, usually when an organization (such as TDF) is legally owned by  
another organization you list it at the bottom of the web-page where  you are 
stating information about copyright, trademarks, etc - e.g. TDF  is a wholly 
owned by FroDEV.
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  "LibreOffice" and "The Document Foundation" are
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  logos and icons are also subject to international copyright laws. Use
  thereof is explained in our 
trademark policy.