I want to know the answer to the following question:
Who was sued for patent infringement on MP3 technology?
All the background I'm provided with is that "Sisvel S.p.A. and its U.S. subsidiary Audio MPEG, Inc. previously sued Thomson for patent infringement on MP3 technology, but those disputes were resolved in November 2005 with Sisvel granting Thomson a license to their patents.". Is that enough to answer the question?