How (or why) is Facebook claiming this is (or will be) patented?  <a href="https:&#x2F;&#x2F;github.com&#x2F;facebook&#x2F;mention-bot&#x2F;blob&#x2F;master&#x2F;PATENTS" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;facebook&#x2F;mention-bot&#x2F;blob&#x2F;master&#x2F;PATENTS</a>