Rosetta Stone, the Arlington language-learning software firm filed a lawsuit against Google for trademark infringement, alleging the Internet search giant allowed other companies to use Rosetta Stone's trademark brand for online advertisements without permission. In the suit filed with the U.S. District Court for the Eastern District of Virginia, Rosetta Stone asked the court to stop Google from allowing other firms -- including competitors -- to use its trademarks to sell ads associated with online searches. Some of the company's trademarks include "Rosetta Stone," "global traveler," "language library," and "dynamic immersion," reports Washingtonpost.