Comment Patent Application Filings (Score 0, Redundant) 191
I believe Microsoft's going to win this one. From the article:
However, a trademark application for the name was not filed until May - when rumours about Microsoft's new product had already spread widely across the internet.
Microsoft, meanwhile, filed its own trademark applications for the name in March - for a variety of uses, including search engine software, interface software, advertising, telecoms and for "providing a website and website links to geographic information, map images and trip routing".