This story isn't patent related but it's interesting to me, since I'm from Maine..
Tartan centre of copyright lawsuit - L.L. Bean and copyright owner in fight over Maine State Tartan. The tartan was designed by a Canadian in 1964 and the copyright acquired by a private company in 1988.
Apparently, there are two Maine tartans... The Maine state legislature has proposed a Maine Dirigo Tartan that would be an alternative to the privately owned Maine State Tartan.