Thanks everyone for your advice, I think I will just go with it, as it is a geometric design that anyone could draw themselves, I will check with my guild when I finish it if there are any issues with entering it in a show.
I really don't think I would bother with the expense of asking an attorney for advice like this, when there are so many helpful, friendly and knowledgeable people right here on the quilting board, I did check the design and there is no "R" in a circle, so I should be OK. If not, then I will make myself a quilt that I will love!
Thanks again everyone!!!!!!