From what I read on that last link it's like it is saying that if I use a designer fabric to make a quilt, I can't sell that quilt without running into the question of whether the designer of the fabric is entitled to money from the sale.
That could apply to anything! To any quilt or other product. I make teddy bears and I have sold them. Does that mean that the fur fabric I used, the material for the clothes I made, could be considered infringement on someone else's fabric copywrite? Can I not sell them because the original pattern for the bear body was a pattern that I bought?
What about someone who makes doilies from a pattern and sells them?