> openoffice isn't much legal in the us since MS Office is patented per se and one
> cannot "create similar software, having basically all the same features". So in the
> US, oo violates MS Office.

So you say that SUN's commercial product StarOffice, which is heavily based on OpenOffice, is illegal in the US?

http://en.wikipedia.org/wiki/StarOffice
http://en.wikipedia.org/wiki/StarOffice#Pricing_and_licensing