Another challenge for K-cup maker Green Mountain

Shares of Green Mountain have tumbled as investors worry about expiring patents on the K-Cup single-serving pod and other issues clouding the company’s future.

(ERIC ROTH)

Green Mountain, Dunkin’ team up on single-serve joe

- Dunkin’ Donuts coffee will soon be available for Keurig Single-Cup Brewers, a coffee machine that makes one cup of coffee at a time.