What is the current status of the federal court case recently filed by
the Milberg Weiss law firm seeking to enforce its copyrights in
complaints it files in court cases? In other words has the infringment
case been dismissed or is it still pending?

I'm not finding that a case has been filed.  A February 2004 law
journal article ( http://home.law.uiuc.edu/~ribstein/Ribsteinclassactionlawyersaslawmakers.pdf
) implies that such a suit would be unsuccessful "because of due
process concerns for public access to the law".  If a lawsuit had been
filed, this article would probably have mentioned it.  Instead, it
only refers to Milberg Weiss's cease-and-desist letters.

A search for 

"Milberg Weiss" "copyright infringement" complaints federal

doesn't turn up any relevant lawsuits, and a Google News search for 

"Milberg Weiss" copyright

returned zero news stories -- if anything's happened in the last month
or so, I'd expect to see some news about it.