How did DC get the copyright to Superboy?
Back in 1947, while Siegel and Shuster sued DC to regain the copyright to Superman, a judge ruled in favor of DC on the Superman matter, but DID rule that Jerry Siegel owned the copyright to Superboy. This was because Siegel had given a proposal for the idea of Superboy (a much different proposal than what they ultimately used) and DC told them they weren’t interested. Then, with Siegel away in the Armed Services, DC came out with their own Superboy in More Fun Comics #101. New York state court Judge Addison Young ruled that Siegel was the sole owner of the separate character, Superboy, under the theory that DC used unfair business dealings with the creation of the character. Siegel and Shuster then sold all their remaining Superman interests, as well as any interest in Superboy to DC.
Back in 1947, while Siegel and Shuster sued DC to regain the copyright to Superman, a judge ruled in favor of DC on the Superman matter, but DID rule that Jerry Siegel owned the copyright to Superboy. This was because Siegel had given a proposal for the idea of Superboy (a much different proposal than what they ultimately used) and DC told them they weren’t interested. Then, with Siegel away in the Armed Services, DC came out with their own Superboy in More Fun Comics #101. New York state court Judge Addison Young ruled that Siegel was the sole owner of the separate character, Superboy, under the theory that DC used unfair business dealings with the creation of the character. Siegel and Shuster then sold all their remaining Superman interests, as well as any interest in Superboy to DC.