I don't think you can expect to slap two common words together and prevent anyone from using those words in any way everywhere. If you make up some new word Ex

I don't think you can expect to slap two common words together and prevent anyone from using those words in any way everywhere. If you make up some new word Exxon etc. then maybe. For slapping two common words together there have to be sensible limits on everyone else being prohibited. If you own things like onetwo.com great that may well be a reason for someone else to be dissuaded from naming a consumer product that because they want an easy to remember domain. Thinking all uses of HealthKit are bad seems more to me like Facebook thinking anyone using "book" prefaced by something else is doing wrong - which I think is silly. I would be amazed if there are not many previous uses of health kit - just removing the space hardly seems an amazing transformation to me.