To my knowledge there has been no information released by Patriot announcing the next shareholder meeting. To give you a little perspective on when past announcements went out and dates/locations of those meetings, I recommend you look at the Def 14A filings with the SEC.
Invitation to Meeting dated Mar 8, 2013
Meeting held April 30, 2013 Carlsbad
Invitation to meeting Dated Dec. 21, 2011
Meeting held Feb 10th, 2012 Carlsbad
Invitation to Meeting dated Nov 30, 2010
Meeting held January 19, 2011 Virtual meeting
Invitation to Meeting dated Dec 8, 2009
Meeting held Jan 28, 2010 Chicago
Invitation to Meeting dated Sept. 12, 2008
Meeting held Oct. 30, 2008 Carlsbad