I think Tony Buzan was the first person to use the term "Mind Maps" in association with the type of diagram that shows how topics are broken down and give guidelines for the making of "Mind Maps". The Buzan Organization registered "Mind Maps" as a trademark in the UK and US, but only in the specific context of organizing courses. The term was trademarked in a much more inclusive sense at one time, but it seems that Buzan accidentally let that lapse and then ended up with only a trademark on the term in the context of training. 
Is tony mandez i think........