Luke Y Thompson is covering the Con for Deadline:
SUNDAY AM UPDATE: I think the biggest news of the Marvel Studios panel tonight is that The Punisher is now owned by Marvel Studios again, and will probably figure into a future film. I’ve learned The Punisher rights reverted to Marvel in 2009 following the release of Punisher 2. The studio has no immediate plans to develop a movie based on the franchise. Marvel Studios President Kevin Feige last night did not say when the Punisher rights reverted, or how: just that they have.
So who is The Punisher? In the comics, Frank Castle is a Vietnam veteran whose family is killed in a Mafia crossfire. Donning a black spandex costume with a skull logo, he declares war on crime and becomes a vigilante. Introduced as a Spider-Man foe in the 1970s, his popularity took off in the late 1980s, when grim and “realistic” superheroes became the norm. The Punisher is different from many superheroes in that he uses guns and has no secret identity. (He is known to be Frank Castle.) On film, he has been portrayed three times.