This involves the issue of online information dissemination. A publisher only has exclusive publishing rights, which are generally limited to paper books (unless otherwise agreed with the author), so for e-books sold online , what should be infringed is the copyright of the original author, but the publishing house often has the copyright in the format. If the book has a copyright in the format, and the e-book is completely used, it should infringe the copyright in the format of the publisher.