If you want correct info then go to the source. I called US copy right office and spoke to some one about copyright statements written on the patterns and books for quilting. as soon as a pattern /book is put into written form it has a copyright on it. The holder of the copyright has to ability to set terms of the copyrighted pattern. Making of the pattern is a form of "copying" it. However (per industry standard) the sellers has the expectation that the buyer will make a quilt from the pattern for their personal use which includes, self, gift or SALE . This is true unless the seller has put other limitations on the pattern/book such as not for commercial use. Many quilts pattern use a block that is "public domain" blocks meaning that these block as been around for a very long time and can not be attributed to a specific designer. I can not copyright a "public domain " block BUT I can copyright the resulting artwork derived fror the arangemnt of the block(s). This gives me "authoriship to the pattern". if you choose to make many of a quilt pattern then written permission is needed or you must buy a pattern for each quilt you want to make. For example- I have made several baby quilts and really like the pattern and want to make many more to give away. I must either buy another pattern for each I want to make or get permission for the designer to make more. This is also true if you want to sell these quilts. Copyright rules are still inplace even if you choose different colors or add/subrtact from the original pattern. Check the copyright statement on the pattern/quilt to see if there are any restrictions. The
industry standard of usually making only 1 quilt per pattern is based on the knowledge that it takes a long time to make quilt and also costs $$$$ so most quilters only make 1 from each pattern to use themself to give as gifts. If you wan to make many of one pattern write/email the designer and ask for permission. it only cost a few cents to do this. and then you be covered. Some sites such as Dianne may come off too strong but this is to protect her rights as a designer. So it seems that most of the copyright statemnt on pattern /books are true.