John Veschi believes Facebook is infringing his Patents

Without getting into details, John Veschi, CEO of Rockstar Consortium believes his 4000 patent portfolio has patents infringed by social networks such as Facebook or LinkedIn.

Facebook Infringes My Patents Too, Says CEO Who Just Sued Google | Wired Enterprise | Wired.com
Rockstar -- the closely watched consortium that sued Google, Samsung, and six other handset makers on Thursday -- says that another big-name company is infringing its vast patent portfolio: Facebook.