At 09:39 AM 5/31/2002 +0100, you wrote:

>Surely
>'Porsche 911'
>'Boeing 747'
>are copyright?

The terms Porsche 911, Boeing 747 can not be copyrighted, but they can be 
trademarked.  Trade marking just a number is difficult, so Intel went to 
the Pentium, a term that is trade markable.  Plus, trade marks only apply 
to a certain field of business.  There is an antacid called "Tempo" and a 
car called "Tempo".  No confusion between the two products.  In the US, 
trademark can also be regional.  When Burger King moved into the midwest, 
there was already a burger joint called "Burger King".  They sued the 
larger Burger King and won.  The settlement was that the bigger Burger King 
could not open any stores within so many miles of the older Burger King.

Tim Swenson

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