Microsoft has filed a US trade complaint seeking to prevent TiVo from importing television set-top boxes. The complaint submitted to the US International Trade Commission in Washington accuses TiVo of infringing four patents. Microsoft is asking that TiVo be barred from importing the digital-video recorders, which are primarily made in Mexico and sold in the US.
The ITC case opens a new front in a battle that began more than a year ago when Microsoft challenged TiVo patents that were being asserted against AT&T, a customer of the Redmond, Washington-based software maker. A separate lawsuit was filed claiming TiVo infringed seven Microsoft patents. The two sides are in talks to settle the dispute, according to Microsoft.