I saw this at Byte (byte.com) but I'm not sure about sites without domain names. A. Ingram

The Register
SBC Communications Inc is enforcing a patent it owns that, it claims, covers the use of frame-like user interfaces in web sites, it emerged this week Kevin Murphy writes. . If your web site uses a frames or a persistent user interface, then you could be in infringement.
http://212.100.234.54/content/6/28985.html