[citation][nom]audioee[/nom]Looking at the Wiki, http://en.wikipedia.org/wiki/Term_ [...] ted_States, I think this patent has expired. Prior to June 8th, 1995 patent coverage was 17 years after that date it is 20 years. Looks like this lawsuit should be thrown out.[/citation]
Actually, the patent is still valid - it expires on April 16th 2012, thus the rush to sue everybody. Read that Wikipedia link you sent more carefully - prior to June 8, 1995 the term was the latter of 17 years after grant or 20 years after submission. With a submission date of April 16, 1992 and a grant date of February 7, 1995, the patent expires on April 16, 2012.
I'm no patent lawyer of course, but looking at the actual patent text, it doesn't seem to cover most of the claimed infringements, so the lawsuit is likely to be thrown out as inapplicable, not as expired.
As to the claims this is now commonplace - of course it is. That's not the point. The point is that it hasn't been known when it was first filed. (Unless somebody proves otherwise.) Thinking back to the software of that time, there wasn't a lot of intelligence in it for sure...