A scantly known startup out of Chicago called Earthcomber has filed a rather absurd patent infringement suit against Loopt, a location-based social network with a substantially higher profile in the Valley and elsewhere.

The suit claims that Loopt has infringed an Earthcomber patent, filed in June 2003 and issued in July 2006, that outlines “a system and method for locating and notifying a user of a person, place or thing having attributes matching the user’s stated preferences.”