This is an older article but I wanted to repost it so people could have some of their questions answered. It shows the current ownership of Marvels biggest comic book characters. I assume all the characters not named here are still owned by Marvel but I will have to do some more research to make sure of that.
Here’s a breakdown of the whole thing in list form (any characters/franchises not listed are under the rights of Marvel Studios):
20th Century Fox
•Daredevil: Daredevil/Matt Murdock, Elektra (Natchios), The Kingpin/Wilson Fisk, Bullseye, Jack Murdock, Karen Page, Ben Urich
•Elektra: Christine Cord/Tatoo, Typhoid Mary/Marry Alice Walker, Kirigi, Stick, Stone
•Fantastic Four: Doctor Doom/Victor von Doom, Human Torch/Johnny Storm, Invisible Woman/Susan Storm, Mr. Fantastic/Dr. Reed Richards, The Thing/Ben Grimm, Nova/Frankie Raye, Alicia Masters, Willie Lumpkin
•X-Men Mutants: [Agent Zero/Maverick/David North], Angel/Warren Worthington III, Arclight/Phillippa Sontag, Beast/Dr. Henry Phillip “Hank” McCoy, [Blob/Frederick J. Dukes], [Bolt/Christopher Bradley], Callisto, Colossus/Piotr Nikolaievitch Rasputin, Cyclops/Scott Summers, [Deadpool/Wade Wilson], Emma (Grace) Frost, Jean Grey/Phoenix, Juggernaut/Cain Marko, Gambit/Remy LeBeau, Glob Herman/Herman Gardner, Iceman/Bobby Drake, Jubilee/Jubilation Lee, Katherine “Kitty” Anne Pryde, [Kestrel/John Wraith], Lady Deathstrike/Yuriko Oyama, Leech, Magneto/Erik Magnus Lehnsherr, Mastermind/Jason (Wyngarde), Multiple Man/James Arthur Madrox, Mystique/Raven Darkholme, Nightcrawler/Kurt Wagner, Phat/William Robert “Billy-Bob” Reilly, Professor Charles Xavier, Psylocke/Elizabeth “Betsy” Braddock, Pyro/St. John Allerdyce, Quill/Max Jordan, Rogue/(Anna) Marie, Sabretooth/Victor Creed, Sebastian Hiram Shaw, [Silver Fox], Siryn/Theresa Rourke Cassidy, (The) Spike, Storm/Ororo Munroe, Wolverine/Logan
X-Men Non-Mutants: Drake Family (Steven, Madeline, Ronny), Grey Family (Dr. John, Elaine), Henry Peter Gyrich, Robert Edward Kelly, Dr. Moira Kinross MacTaggert, Dr. Kavita Rao, William Stryker, Bolivar Trask, Warren Worthington II
New Line Cinema
•Vampires: Blade, Deacon Frost, Dracula/Vlad Tepes
•Non-Vampires: Hannibal King, Abraham Whistler
Sony Pictures
•Ghost Rider: Ghost Rider/Johnny Blaze, Blackheart/Legion, Phantom Rider/Carter Slade, Abigor, Gressil, Mephistopheles, Wallow, Barton Blaze, Roxanne Simpson
•Spider-Man: Spider-Man/Peter Parker, Doctor Octopus/Otto Octavius, Green Goblin/Norman Osborn, (New) Green Goblin/Harry Osborn, [The Lizard]/Dr. Curt Connors, Sandman/Flint Marko, Venom/Eddie Brock Jr., Betty Brant, Dennis Carradine (Buglar), J. Jonah Jameson, Ben Parker, May Parker, John Jameson, Joseph “Robbie” Robertson, Gwen Stacy, Mendel Stromm, Flash Thompson
The possibility of Marvel having complete control of their character properties, like its comic rival DC, is a matter of time.