Local.com just announced that it received this patent for an “ad supported 411 local search model.” It would seem to conflict with Jingle Networks’ patent covering contextual ad serving in a DA environment. And then there’s the looming Geomas local patent that has both online and mobile implications. What about the Ingenio patents around PPCall? (the Local.com mobile patent implicates PPCall.)
There’s also a lesser-known local search patent that Microsoft owns through its acquisition of Vicinity Corp. in 2002.
How all these potentially conflicting local search patents relate to one another is hard to determine and most likely will have to be resolved through litigation at some point.