[r-w]

That might require a bit more effort on the part of a company I know, who would have to register their logo "moz://a".

[pbhjpbhj]

That would be a trade mark rather than a company name in this instance I think. In UK registered trademarks are standard type-written letters for word marks. If they contain symbols then they're figurative marks and it's an image of the mark which is registered.

On that point though, searching on the UK trademark registry it looks like it just strips non-alphanumeric symbols. A search for "Moz://a” returns "moza".