Dear Jane (I believe) is a trademarked term. There was a case a few years ago where someone made a quilt of this pattern and advertised on ebay to sell it. The maker called it "A Dear Jane" quilt. This was the problem.
The original quilt (to my understanding) is not copyrighted. If my fading memory is correct, the name was changed to to something like "in the style of the Jane Stickle Quilt which is in the Bennington Vt museum.
I also believe the term "Stack-N-Whack" is also a name which is under a trademark.
The case I wrote about above of a quilter and her trapumto method involved a Patent and not a copyright or trademark. At the time i knew someone who worked in the Patent Office in Washington DC and I called them and asked why a Patent was given on a technique that had been used for many many years and was told "the examiner didn't know needlework". So guess care is the word to use in these situations.