The U.S. International Trade Commission has ruled that Microsoft infringed on patents of Motorola Mobility in its Xbox games console. Administrative Law Judge (ALJ) David P. Shaw ruled that Microsoft infringed four patents of Motorola Mobility, though he sided with Microsoft on a fifth.

According to the initial determination, Motorola's intellectual property was usurped in Xbox software for tasks such as efficiently moving video files or connecting wirelessly to the Internet. The patents in the complaint are in the area of video encoding and decoding, security, and communications technologies, and include U.S. patent numbers 5,319,712; 5,357,571; 6,069,896; 6,980,596; and 7,162,094.

An ITC ruling against Microsoft would force the company to enter into a licensing deal with Motorola.

A final ruling is expected later this year.