is there any where to find out what anime is going to fall out of copyright. by the time i find some thing it is already posted. also where do you check to see if an anime has copyrights still?
If you mean "who holds the US license to distribute an anime?," you'd have to ask its licensor.
For example, Funimation has the US rights to Detective Conan/Case Closed. I imagine you have to contact their legal department and ask them "when does the license on [insert name of anime here] expire?"