What's interesting to note is that, as revealed on an episode of NPR's This American Life [1], Lodsys has the same exact address (down to the room number!) of Oasis Research, which is known to have a "back-end arrangement" with Intellectual Ventures.
So Lodsys is pretty much a front for Myhrvold and his despicable company.
It's a physical address [1] and in the radio show they actually visit it. They describe the location as being a little eerie:
The office was in a corridor where all the other doors looked exactly the same —locked, nameplates over the door, no light coming out. It was a corridor of silent, empty offices with names like "Software Rights Archive," and "Bulletproof Technology of Texas."
[1] 104 E. Houston street, suite 190, Marshall, Texas
So Lodsys is pretty much a front for Myhrvold and his despicable company.
[1] http://www.npr.org/blogs/money/2011/07/25/138576167/when-pat... (this is pretty much a full transcript of the show)