According to this no one has ever been prosecuted just for sending false DMCA takedown notices: https://law.stackexchange.com/questions/51541/has-anyone-been-c

According to this no one has ever been prosecuted just for sending false DMCA takedown notices: https://law.stackexchange.com/questions/51541/has-anyone-been-convicted-of-perjury-for-false-dmca-takedown-notices https://law.stackexchange.com/questions/51541/has-anyone-bee... They do mention a case where the defendant acted in bad faith and was found liable for damages though.