body: Say, for example, I have created a product which is compatible with a specific existing technology. Like an Apple iPhone case.
  
  
  I would like to tell the user that my new case can be used with their apple device. How do name my device such that it doesn't infringe on the apple trademark but still tells the user what it is?
  
  
  For example, can I name my case as an "Apple iPhone Case", or would that be trademark infringement? If not, what is allowed?
  
  
  
title: How do i refer to a trademark I don't own without infringing on it?