It looks like[0] as of the start of this year, only works made in 1927 or earlier are in the public domain. Copyright terms have regularly been extended by Congress and they are astoundingly long now.
> Copyright terms have regularly been extended by Congress and they are astoundingly long now.
There has been no appetite for extending terms in recent years, and things are entering the public domain again, including _Steamboat Willie_. I think there is an understanding that the CTEA will end up as the final extension and that further extensions are unlikely.
I have a suspicion that this is why steamboat willy has been in the Disney intro for the last few years - so it can be a trademark (which don't have expiry dates)
Sonny gets blame for the copyright extension act, but Cher's royalties lawsuit is not unreasonable or copying rights related... or did I misunderstand or miss something?
[0]https://copyrightlately.com/public-domain-day-2023/