Title: There is a PATENTS file in almost all Facebook&#x27;s open source projects with statements on &quot;Additional Grant of Patent Rights&quot;.<p>E.g., React (https:&#x2F;&#x2F;github.com&#x2F;facebook&#x2F;react&#x2F;blob&#x2F;master&#x2F;PATENTS)<p>Why Facebook adds this declaration on top of the BSD license of the software? Is it safe to use those projects in my commercial project?
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