Chipotle branching into burger business?

Mexican chain files for burger-related trademark

Chipotle could soon try to make a splash in the burger business.

The fast-food chain, known for its rice-popping burritos, recently trademarked a request for the "Better Burger" name.

A company representative said the move is a "growth seed idea," but officials from the company told investors that it is moving ahead cautiously into new territory.