From 1998 to 2002, a gentleman by the name of Erich Specht ran a company called "Android Data." Android Data went bankrupt in 2002, and Erich hasn't used the name since. However, when he heard of Google's use of the "Android" name, he put together a website to "prove" that Google had infringed on his trademark. Shortly after, he sued Google, Android Inc., and the Open Handset Alliance for infringing on the name for $94 million.
Luckily for us Android enthusiasts, the judge in charge of the case wasn't convinced and consequently threw both the lawsuit and Erich's original trademark out the window, stating that the latter could result in confusion with Google's trademark and that Erich had used his mark "as a sword" against Google.