Yankee Doodle in Berlin

Under the current copyright laws of the United States, all works published or registered before January 1, 1928, have entered the public domain. Yankee Doodle in Berlin was produced by Mack Sennett and released in March 1919, placing it well before this cutoff date. As a 1919 release, its initial 28-year copyright term would have expired in 1947. Even if the copyright had been properly renewed for a second term, that term would also have expired long ago. However, the 1928 rule makes any investigation into renewal moot, as all pre-1928 works are now legally public domain regardless of previous renewals. Note: generated without live web grounding (the grounded research engine was unavailable). Verify the cited sources independently before relying on this determination.