Software maker Rosetta Stone Inc. posted its quarterly results which surpassed Wall Street speculations on account of strong demand from both consumers and institutions for its products. In addition, the company augured first-quarter and full-year revenue above estimates, landing its shares up by 13 percent.

Virginia-based Rosetta Stone Inc., maker of the language-learning software firm has filed a lawsuit against Google Inc., alleging that a change in Google's policy assists the unauthorized use of its brand by competitors and software pirates.