Whew...I'm exhausted reading about this...it has become too confusing. It is a far cry from using up your family's old shirts etc in the old days hasn't it? Nowdays it's all about money. So many people sewing, making patterns, the high tech quilt world has exploded and it's changed into a chance to make $$.
I first ran into this issue when I would have my quilts machine quilted. In the old days...a whole group may have quilted a quilt, no copyright problem there. My quilters told me, it's your quilt, you don't have to put my name on it because I quilted it on my machine. But now there are awards for it (well deserved) and some famous machine quilters!
My point? Uh, I don't have one. So I guess I'll go sew for awhile.