I'm surprised it lasted this long. It feels like it's more prevalent in the modern age to ring fence as much as you can, to the detriment of the creative industry and economy. Yet is the norm in games where you can claim whole ownership of very loose abstract ideas. www.cbr.com/marvel-dc-lo...

Marvel and DC Lose Their Super Hero Trademarks

The U.S. Patent and Trademark Office cancels a long-held DC and Marvel Comics trademark for the term "Super Hero."