Learn what is being sued over, fool
Hasbro aren't claiming infringement over the "Transformer" name - just as they didn't sue LG for calling one of their phones the Optimus. They can't, because both "transformer" and "optimus" are words with their own meanings. What they're claiming is an infringement is the *phrase* "Transformer Prime", which is used in the movies, cartoons and comics as the name for the leaders of the Transformers and is trademarked. If Chevrolet release the Chevrolet Idol, no problem; if there was a car manfuacturer called American Automobiles, no problem. But if American Automobiles release the American Idol, you'd better believe a certain TV station is going to drop on them from a height for trademark violation.
Also, just as a sidebar: one of the few Transformers that actually *is* designed to come apart into two separate pieces is Optimus Prime, who separates into the robot and his trailer. Moreover, the trailer is directly analogous to the keyboard dock as it's there to provide additional functionality (it contains Optimus's spare weapons).