The company plans to use the funds from the IPO to pay off debt and expand its chain of stores beyond the Northeast, according to the report, opening as many as 250 new locations in the next two years. Its long-term goal is to double the number of Dunkin' Donuts locations over the next 20 years. Dunkin's prospectus states that its expansion "has the potential, over approximately the next 20 years, to more than double our current U.S. footprint and reach a total of 15,000 points of distribution in the U.S." This aggressive growth strategy could heat up competition when it comes to coffee sales. Coffee and other drinks constitute 60 percent of the company's U.S. sales, said Dunkin', and recent NPD market research data found that the company sells more servings of hot regular coffee and iced coffee than any other fast-food chain. Starbucks is in second place, followed by McDonald's and Canadian chain Tim Hortons, according to Robert Passikoff of consumer and brand loyalty consulting firm Brand Keys Inc.