Microsoft has taken issue with Apple's latest response in the “App Store” trademark battle, this time taking issue with the iPhone maker's font size in a legal document.

In January, Microsoft requested a summary judgment to block Apple from trademarking the phrase on the grounds that it is too generic. In a game of legal ping-pong, Apple fired back, reminding the court that Microsoft holds a trademark on another generic term: Windows.

But Microsoft has taken issue with Apple's official multi-page response on the grounds that it's too long-winded, written in typeface that's entirely too small.