According to Reuters, Motorola is protecting its interests after TiVo sued Verizon Communications, which uses Motorola's technology, for patent infringement.

The complaint was filed on February 24th with Motorola saying it acquired its DVR patents through an acquisition of Imedia, which filed for patents in 1995.

Motorola says that the TiVo patents are the same ones used invented by Imedia engineers.

"TiVo is attempting to assert its patents against technology disclosed and claimed in Motorola Mobility's patents, despite the fact that Motorola Mobility's patents were filed more than three years before TiVo's patents," Motorola said in a statement.

TiVo has yet to comment on the lawsuit.