Activision this week requested and received permission to extend its trademark for Sing Hero, a project that the company has not announced.
The United States Patent & Trademark Office (USPTO) received Activision's request for an extension on September 3 and approved said extension later that day.
Just because Activision has a trademark for Sing Hero does not mean the company has plans to ship a game with that name. The company has also registered titles like "Drum Hero," "Keyboard Hero," "Guitar Villain," and "Drum Villain."
Activision's "Hero" franchises--namely Guitar Hero, Band Hero, and DJ Hero--have been dormant of late, though the publisher has confirmed that Guitar Hero is not dead, but rather taking time to reinvent itself before returning.