Apple is seeking to defend its deal with Google, which provides revenue sharing through Search. This comes after the DOJ threatened to break up Google's business after a court found that it holds an illegal monopoly.

Apple seeks involvement in Google's upcoming US antitrust trial to protect its own revenue-sharing arrangements that provide billions annually from Google. Apple does not intend to create its own search engine.

A court filing in the Google monopoly case reveals Apple's lack of appetite for building a search engine or entering the search text ad market.

In a US federal court declaration, Apple SVP of Services Eddy Cue outlines why the company doesn't want to take on Google.