Dunster is not correct in this instance. Please refer to the Quilting Lawyer, expert in knowledge of copyright. You are assuming that all "work", "designs" are automatically copyrighted.....that is not the case. A "copyright owner" in relations to quilts and clothing is not valid. A copyright owner of a widget used in manufacturing would be protected. You do not have to get permission to exhibit a quilt made from a pattern that was purchased.