I wonder how quickly a company can lose a trademark after disuse. It might be as quickly as a year (which would explain why Hasbro are so keen on releasing lots of toys named "Optimus Prime" and "Megatron" every year; although I think they've gone a tad overboard (they would only need to release one of each per year)

).
e.g. Bumblebee and Hound; the last time Hasbro used these names before they lost them was in 1995; G2 Go-Bot Bumblebee and the never released G2 Autoroller Sgt. Hound. My presumption has been that toys like BW Buzz Saw and K-9 were assigned these names because Hasbro had lost the rights to Bumblebee and Hound by this stage. Although those toys were released in 1997, Hasbro would've needed to register the names in 1996 well before their release, so their application for those names may have been knocked back as early as just one year after having registered them for the final year of G2 in '95.
Hasbro last used the name "Laserbeak" in 1985 and had lost it by 1997, hence the BW character's name had the cringeworthy spelling of "Lazorbeak." Hasbro last used the name "Weirdwolf" in 2007, which feels like yesterday to me, but was actually 9 freakin' years ago.

So yeah... definitely possible that they might've lost the rights to the name in the meantime.
But it's also interesting to imagine why they can't just keep it a "less intrusive" variation, like "Decepticon Weirdwolf" or "Decepticon Weirdwulf" (wulf being German for wolf), or "Oddwolf" or "Oddwulf" or something like that. Wolfwire... Okay, he's a wolf. Wire?

Still, I'll take Wolfwire over Tankor or Scattorwolf.
