After Yellow Pages leap frog name game, do you remember ..AAAAardvark at the top of page 1 for Plumbers? Apparently this tactic disn't work a second time around so the long tail search term and more new extensions, generic, government and geo appeared. That is quite a leap, from there being hundreds of first page listing's down to just a handful.
Adding TM to an internet address or domain name is not only for dot com's, but to the best of my knowledge it is fine to type tm into any extension by default, that is part the reason why it is interesting and a good idea.
In some cases it may be like a simple update, and also an opportunity for a company or a business to widen their digital footprint, and only for a small outlay each year.
I consider this domain name inventTM com concept to be perfectly aligned because the base root word, invent then paired with a TM suffix, represents the exact genesis of intellectual property by combining a premium, universal root word not inventing ions ion or, along with the universal symbol of protection, this creates a rare digital asset.
The dual resolution (text + emoji) is like having the front foyer and a side entrance, it adds a layer of modern technical authority that reinforces the "innovation" angle. Future proof, and indicative of being invested in innovation.