Nintendo confirms fourth Professor Layton title After the title was trademarked shortly before E3, Professor Layton was expected to appear at the event, and appear it did.10 Jun 2011 E3 21:45 UTC
Level-5 files trademark for fourth Professor Layton title Level-5 has filed a trademark for the North American name of the fourth Professor Layton title for the Nintendo DS.27 May 2011 17:30 UTC