Rovi Corp, the streaming service tech company behind Blockbuster On Demand and CinemaNow, is suing Hulu for patent infringement. The patent in question is related to electronic program guides. Rovi has filed the suit to seek compensation for lost revenue and treble damages. [Reuters]

Rovi is suing Amazon.com subsidiary IMDb.com over infringement on TV guide patents. Rovi attained the patents when they acquired Gemstar. The five patents cover interactive program guides, purchasing products on-demand, and scheduling recordings from a computer. Rovi claims to have initiated patent-licensing discussions with Amazon.com in 2009, but they did not reach an agreement. [paidContent]

Rovi Corporation (NASDAQ:NOVI) has declared an intent to buy out Sonic Solutions as part of a $720 million deal. Sonic and Rovi will work together on creating digital video distribution software. Sonic is known for creating a premium programming service called RoxioNow. As part of the acquisition, Rovi will also gain ownership of DivX. The acquisition is expecting to close in early 2011. [paidContent]