Hmm, that means that perhaps *ASMH is free and clear, since I think the IBM product from which it was created predates 1980.?
As for things like Pascal (*PASCALVS) and Fortran 77 (*FTNVS), these may have been created after 1980.
I'm trying to find the reference that I mentioned in my original post, but haven't been able to find it. It mentioned that IBM let copyright expire on a "slew of old mainframe software products". This was about 4 months ago. I cannot find it anymore but will keep looking.