Interestingly the Specialist Matt Trakker G.I. Joe figure has a M.A.S.K.-like logo on the package, but it does not say "MASK." It says Mobile Armored Strike Kommand, and there is no sign of the expanded term being a trademark. If Hasbro had plans to revive the line, then I would think that they would institute measures to renew their trademarks on key terms and phrases.