Books with autographs could be registered as a trademark, depending on the type and content of the book. If the book is a novel, poem, script, manga, music, or other artistic expression, you can register the trademark as a creative work. If the book is a novel, poem, script, manga, music, or other forms of entertainment, you can register the trademark as a publication. It should be noted that autographed books can also be used as promotional materials for other goods or services such as advertisements, posters, pamphlets, etc. These can also be registered as a trademark. Therefore, it was necessary to determine the type of Trademark Registering according to the specific situation. If you are not sure which category you should register in, you are advised to consult a professional trademark agency or lawyer.