The International Trade Commission on Friday announced it has launched an investigation into Microsoft's Xbox business, after Motorola filed a complaint last month that alleged patent infringement.
The two companies are in the beginning stages of a legal battle over Xbox, PC and mobile software.
On Oct. 1, Microsoft sued Motorola for patent infringement and filed a trade complaint. Microsoft again sued Motorola on Nov. 10, alleging the Schaumburg, Ill.-based company has been hiking royalty rates. Motorola fired back the next day with a lawsuit alleging Xbox, PC and mobile patent infringement, and on Nov. 22 filed its complaint with the ITC.