*There's no content in the article about which four patents are at issue or what...

There's no content in the article about which four patents are at issue or what their significance is.

There is a link near the start of the article to groklaw's coverage of lodsys and their patents. http://www.groklaw.net/staticpages/index.php?page=2011061523...

They are also each referenced more than once in the text of the complaint.