Here's a link to an article with a little more information but still not sure what JLR decided to go after them. Apparently JLR had actual supported their passion and JLR has previously supported the replica industry as a whole. In fact you drive replicas in one of their own sponsored driving experience course.
http://www.clubcobra.com/forum...d-news-replicas.html
And in this court case they lost in an attempt to copyright/trademark the look of the LR Defender: