Just asMarvel Studios’Phase Four is kicking into gear, the companies responsible for creating the vast MCU will also get ready to stave off possible compromises over the characters in it, as the heirs of several creative masterminds could disrupt ownership of severalAvengers.

The mainMarvelcharacters in question are Iron Man, Ant-Man, Hawkeye, Black Widow, Falcon, plusNo Way Homeduo Spider-Man and Doctor Strange,among others, whose property could be subject to copyright termination in the near future by Stan Lee, Steve Ditko, Gene Colan, and Don Rico’s descendants, according to US law. If Marvel representatives lose, this could mean Disney would be forced to share the licensing rights and exploitation of all these works with the different groups of heirs.

Avengers Movie Poster

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According tocourt documentsdug up by The Hollywood Reporter, Marvel Characters, Inc has filed complaints looking to obtain a formal declaration that allthese powerful Avengersare not eligible for copyright termination despite their work for hire nature. Basically, copyright termination allows authors or their eventual heirs to reclaim rights over a specific work, provided certain conditions are met, a field in which Marc Toberoff, the attorney representing the different groups of heirs, specializes in like few others.

Toberoff is most famous for representingSupermancreators Jerry Siegel and Joe Schuster in a failed attempt to seek such termination from DC Comics, as well as doing the same on behalf of Jack Kirby’s heirs between 2013 and 2014, with the latter case ultimately being settled before getting reviewed by the Supreme Court. Marvel’s response comes on the back of recent termination notices filed by Stan Lee’s brother Larry Lieber, which - if successful - would see Disney lose partial control over their prized superheroes in June 2023.

Naturally, Marvel has lawyered up quite well with Dan Petrocelli, the same attorney who held up DC’s rights in theSupermancase, with the core part of the company’s argument being that “Marvel had the right to exercise creative control over [Lee’s] contributions and paid [Lee] a per-page rate for his work." The news should not come as a surprise, given that even writers and artists from more recent workslike theWinter Soldierhave voiced their dissatisfactionover how little compensation they have actually received for the money-making machines they created.

Like any legal proceedings, it will take a while until the ramifications of these copyright battles fully play out, but in the worst-case scenario for Marvel, they would end up having to share part of those massive MCU profits. The move will only add up to the legal worries piling up forDisney and Marvel after Scarlett Johansson’s own lawsuitover herBlack Widowbonuses.