I don't believe they hold any official licence deals with pre-existing ranges. They grew out of the 3d resurgence in the Battletech space and offer generic sci-fi mechs and vehicles to suit a range of settings. There's been a bit of discussion of late in relation to a DMCA which resulted in BT designs being removed from online libraries such as Thingiverse. however as per the Gamesworkshop V. Chapterhouse case, shapes cannot be trademarked and they are free to continue their designs as long as they don't use trademarked terms to describe their product[/Gross_oversimplification].
They're a great mob to deal with and their products are absolutely top notch. I highly recommend them.
*I am not a lawyer.