Well, almost all bookstores puts stamps (sales sticker, discount info etc) on the books they sell. Is that a &quot;derivative work&quot; and thus &quot;illegal&quot;?<p>And this broad &quot;distributed or used in any other way&quot; doesn&#x27;t seem very valid either.<p>Isn&#x27;t it legal to write with a pen on your book copy if you&#x27;re not the author?