McDonald's trademarks the word "McBrunch"

McDonald's has filed a federal trademark registration for the term "McBrunch," confirms company spokeswoman Lisa McComb. The filing, which took place in July, was first reported by the fast-food industry blog BurgerBusiness.

Is a new McBrunch program being seriously considered? "That sort of speculation is highly premature," says an e-mail from McComb.

"We routinely file intent to use trademark applications as a regular course of business," says McComb. "We can't share details at this time as to how the trademarks may or may not be used."

In fact, McDonald's previously applied for the McBrunch trademark back in 2001, but abandoned the application, says Scott Hume, editor of BurgerBusiness.

McDonald's is not currently testing any sort of McBrunch concept, says McComb.

But will it?

Hume certainly thinks so. "There's no reason to file for it if you don't plan to use it," he says. "Their declining sales show they have to do something."

McMozzarella sticks were intorudced last month. McDonald's have been branching out with new items in the hopes of attracting new customers over the past year-and-a-half

For McDonald's, just about any action may be better than no action. On Tuesday, the fast-food giant reported its worst global monthly same-store sales in a decade — down 3.7% for the month of August. Even CEO Don Thompson has said that the company needs to create new offerings that bring more excitement to the market.

In the fast-food business, among the most common — and least expensive — ways to grow sales is to create new so-called "day parts" to lure customers during times of the day that they don't usually stop by. That's why some chains have been pushing late-afternoon smoothies and late-night snacks.

Any McBrunch program at McDonald's — at least in the U.S. — likely would be limited to weekends and holidays, says Hume. It likely would extend the breakfast hour to noon or even 1 p.m., and include items not currently on the breakfast menu, says Hume.