I have never seen any real reason to worry about a copyright when making a quilt. But then I don't make them for commercial purpose. Mine are made for family and friends. I have used MLB, NFL, Disney, Marvel and a lot of fabrics with copyright notations on them. If they didn't want us to use the fabric then they shouldn't manufacture it. And if I can figure out the pattern I see then it must be a pretty basic design. Sometimes I even think I design my own and have never looked to see if someone else thought of it first. I was at a craft fair the other day and saw a lady selling Disney designed earrings and pins - thought about asking if she paid for the right to use them but didn't. I am not a copyright police, or quilt police - just a happy quilter that enjoys looking at what other people can create.