Encyclopaedia Britannica sues TomTom, Magellan for alleged patent infringement

TomTom has already tussled with Garmin over alleged patent infringement, but it looks like the company has now drawn some ire from a slightly more unexpected source, with Encyclopaedia Britannica now suing it, along with Magellan and, somewhat curiously, American TV & Appliance (a retailer based in Wisconsin). So far, about the only thing that's known about the lawsuit -- which was filed May 21 in the U.S. District Court for the Western District of Wisconsin -- is that Encyclopaedia Britannica is claiming that the companies infringed on some of its patents for a "computerized map system." Exactly how that applies to these three particular companies and not everyone else, we're not sure, though we're sure we'll be hearing more about it soon enough.