A trademark is about the marketplace, not the dictionary
A trademark helps customers recognize who is behind a product. That makes the word “superhero” a complicated thing to claim: it describes a kind of character, but it can also appear on the packaging or advertising for comics and related goods. Marvel and DC’s joint trademark rights concern commercial uses of the word in connection with particular products and services—not every time someone says or writes it.
That distinction separates trademark from copyright. Copyright can protect a particular character, story, or drawing; trademark law is aimed at signs that identify a product’s source. A publisher therefore does not own the general idea of a caped hero just because it has rights involving the word used to describe that genre.
Why other publishers may choose different wording
A publisher planning a cover, product line, or promotional campaign has to consider whether a term could make buyers think its comics are connected to another company. Even when a use might be defensible, challenging a trademark claim can cost time and money. A smaller publisher may decide that “masked adventurer,” “costumed hero,” or another description is safer than making “superhero” the prominent label on a product.
The practical effect is less sweeping than a ban on ordinary language, but it can shape how comics are sold. The word remains available for conversation and description; its use as a commercial badge is where the legal and business stakes rise. That is why a genre term can be easy to say and still be a cautious choice to put on a comic’s cover.
