According to Gamasutra, League of Legends developer Riot Games have counter-filed for the "DotA" trademark following Valve's application for the same acronym, saying that the Defense of the Ancients name, a popular Warcraft III mod, should belong to the community that built and continues to support it.
"We have filed for the 'Defense of the Ancients' trademark to protect the work that dozens of authors have done to create the game and on behalf of the millions of DotA players all over the world," said Riot Games' Steve Mescon.
"The idea that one single company is taking control of the name of something that hundreds of people have contributed to is surprising. I believe DotA should always remain a community-owned product that modders, independent developers and game fans can continue to modify and play as often as they'd like," he added.
However, he does give Valve the benefit of the doubt considering they're reputation with the modding community.
"I think the best-case scenario would be that nobody owns the trademark to the 'DotA' name," Mescon said. "But if Valve were to ultimately gain the rights, I hope that they would abandon the trademark and release it to the community to allow them to continue to modify, play and experience DotA for free. That's what DotA is all about."