Yes, I know this is from a lay person and therefore, not anything with a legal basis for a conclusion. However, it sounds ridiculous that a company can copywrite a phrase that's been in use world-wide for about 2 decades. I would think that those two words make up a definition. 'True' = actual, real, accurate, honest. 'Rotary' = turn, spin. Is this company going to attempt, through a copywrite, to stop people from using the English language?
I see what you're getting at...but let me give you an example...

Star: A self-luminous celestial body consisting of a mass of gas held together by its own gravity...

Wars: multiple states of open, armed, often prolonged conflict carried on between nations, states, or parties.

Now....put those two words together in print, and see the rain of legal wrath that is brought down upon you.