After all, what do you do if someone inadvertently fed a page upside down into the fax machine? You simply turn the page over or, if you get an electronic version, use the reader software to rotate it. Apparently this is not within the standard operating procedures of the U.S. Patent and Trademark Office. No, if your fax comes in upside down, they send you a message in return saying that they can't accept it and to re-fax.