Strikeforce: Morituri was a science fiction comic published by Marvel Comics from 1986 to 1989. The story, outside of the main Marvel continuity, involved the Earth being invaded by aliens and the Earth using soldiers endowed with superpowers. Those powers were granted via an artificial process and the soldiers would die within a year of getting them. The title, derived from the Latin phrase "Ave Imperator, morituri te salutant" ("Hail, Emperor, those who are about to die salute you"), refers to the sacrifice these soldiers took on for the Earth. The series was created by writer Peter B. Gillis and artist Brent Anderson (later issues were by James Hudnall and Mark Bagley).
There were a few attempts to use this property after the initial run, a reprint of the original material and the Electric Undertow miniseries, the series lay pretty dormant otherwise. There were efforts to adapt the series into other media though, such as a Syfy (then Sci Fi) Channel television pilot and a film.
The film seems to be an especially problematic issue. Waterman Entertainment optioned the film from Strikeforce: Morituri co-creator Peter Gillis with the intention to make a deal with Marvel to allow them the rights. Gillis' claim is that he never signed a contract with Marvel for the property so owns at least half of it (and half the income of any profit). Marvel apparently sees things otherwise.
According to Gillis' legal representative Connor Cochran, Marvel even went as far as essentially doctoring a contract to show that Gillis did Strikeforce under contract. Gillis has apparently been trying to settle this for many years and Cochran said that they will reach out one more time to Disney/Marvel, but if that fails they will see Marvel in court.
Could even Matt Murdock and Jennifer Walters fix this mess? For more detail, see the source article.