FRCP
21 Day limit for challenging personal jurisdiction isn't jurisdictional limit on subsequent motions.
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2016/D01-27/C:15-1749:J:Rovner:aut:T:fnOp:N:1693702:S:0
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Not written by a barrister. The name was thought up by a second-year American law student sitting in a coffeehouse in Manhattan. Neither an authoritative statement of the law nor legal advice.
Don't rely. Quick work.