During my trademark research, I also discovered: A German beer brewer (St. Georgen Braeu, Buttenheim) has held a registered trademark "LINUX" from 1999 to 2009. This trademark was restricted to "beverages, beer and other alcoholic drinks".
You can find the respective entry in the DPMA trademark database here.
I am not quite certain whether I would have liked the idea of drinking a pint of Linux or not. It would certainly have been a popular gift to bring to international (Linux, Free Software) conferences.