Quote Originally Posted by ChattanCat View Post
So how do you know if a tartan is patented? It seems that after 17 years, at least in the US, patents run out. Is this true for the rest of the kilted?
Here in the UK you can renew for up to 20 years - http://www.ipo.gov.uk/patent/p-manag...enew-renew.htm

But it gets more expensive to do so.