Have a good time™

Look at this image. Look specifically to the middle right and you can just make out the phrase 'Have a Good Time'. And if you squint even harder, you may just notice the faint outline of the ™ symbol at the end. You may have seen it on the televisual coverage too. It's on the media packs as well.

Are the organisers of the Berlin World Athletics Championship really trying to claim a trademark on a phrase as banal as 'have a good time'? Was that the best motto a - no doubt - highly-paid group of creative and media types could come up with?

What next? Have Fun™? Hello!™