You're a little behind the curve on this on. Maryland has received a stay so it won't be going into effect yet.
From David Hardy's Of Arms and the Law blog;
[h=2]4th Cir. grants a stay in Woollard[/h] Posted by David Hardy · 1 August 2012 02:19 PM
Woollard held that Maryland's vague standard for a carry permit, good cause or something like that, was unconstitutional. Maryland appealed to the Fourth Circuit (in Richmond, VA) and the court today issued a stay, but also accelerated its consideration of the case:
"Upon consideration of the filings relative to the motion to stay pending appeal, the court grants the motion. The court further directs that this case be expedited and tentatively calendared for oral argument during the October, 2012 session of court, October 23-26, 2012.
Entered at the direction of Judge King with the concurrence of Judge Gregory and Judge Davis.
For the Court
/s/ Patricia S. Connor, Clerk
