Too many overthink copyright laws. Most have rules which aren't laws. Don't copy to give or sell, don't claim rights to it. An item can be made and sold from a bought copyright pattern if given the creator credit. Not following copyright law is a crime but not following a designer's rule is not. A creator may have many rules added to the sale of the pattern but it's the buyer's decision to follow the rules, it's not a law you have to.