You ask about lack of response by any of the 19 defendants so far!?...

"According to federal rules of civil procedure rule 12, a defendant normally has 21 days to serve an answer."( From the date he has been served)...

The complaint was "Filed" on 11/02/09...Plaintiff is given time to perfect "Service" on defendants, and the timeline of 21 days to file an "Answer" starts after the complaint has been "Served" not merely "Filed"...

Gil...