It’s 2019, which means that all copyrighted works in the US that were published in 1923 have now fallen into the public domain (with a few exceptions). This marks the first time since 1998 that works in the US have entered the public domain due to various copyright extension acts that have steadily increased the term of copyright protection. Will 2019 see another attempt from the US to continue to extend the duration of copyright protection, or has it reached it’s limit?
Read more here arstechnica.com