StreetSpace is a company founded in 1999 and installs internet kioks in public spaces, such as airports, retail locations and restaurants. The company's patent claims that "it's being infringed upon by Google, Apple, Nokia and all of the major mobile ad networks. The claimed infringement comes in the form of delivery of location-based and/or personalized advertising."
Apparently there were multiple lawsuits that've now been consolidated into a single action before the federal US District Court (Northern District of California).
Here's a claim in a nutshell against Google, repeated and alleged equally against all defendants:
More Info: Claim Against Google