If you believe its invalid, please dispute it. Also, your best resource will be the Copyright section of our Help Center, start with these top FAQs: https://yt.be/help/tqy9 . Additionally, you can review info on fair use, creative commons, and our troubleshooter linked from there.
Or... now hear me out... you fix the copyright system so it can be abused like this. You're playing with people's livelihoods here.