Yes utauloids is copyrighted because it's the name of an Anime Series sorry dude.
Ignore the first answer, it was answered by an uninformed person.
UTAUloids are copyrighted TO THEIR RESPECTIVE VOICEBANK AUTHORS, and the software itself is copyrighted to Ameya/Ayane. However, you are free to use their voices and the program for commercial production of music. What you can't do is sell them.
