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. Motorola followed soon after, and signed with Sisvel to license MP3-related patents in December 2005. Except for three patents, the US patents administered by Sisvel had all expired in 2015, however (the exceptions are: U.S. Patent 5,878,080, expires February 2017, U.S. Patent 5,850,456, expires February 2017 and U.S. Patent 5,960,037, expires 9. April 2017.
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 . Motorola followed soon after , and signed with Sisvel to license MP3-related patents in December 2005 . Except for three patents , the US patents administered by Sisvel had all expired in 2015 , however ( the exceptions are : U.S. Patent 5,878,080 , expires February 2017 , U.S. Patent 5,850,456 , expires February 2017 and U.S. Patent 5,960,037 , expires 9 . April 2017 .
Who initially sued to protect their patent rights?
Who initially sued to protect their patent rights ?
Sisvel S.p.A.
Sisvel S.p.A.