MANHASSET, N.Y. Dolby Laboratories Inc. has announced it has received a favorable from that the U.S. District Court for the Northern District of California stating the company did not infringe on two patents belonging Lucent Technologies Inc. relating to Dolby compression technology.
The Court concurred with a request by Dolby (San Francisco, Calif.) for a summary judgement the company did not infringe on U.S. Patent Nos. 5,627,938 and 5,341,457. Lucent alleged that Dolby's AC-3 audio compression technology required licenses to use these patents.
Dolby originally filed a lawsuit against Lucent in May 2001 claiming the patents are invalid. In August 2002, Lucent filed a counterclaim alleging Dolby directly infringed on both patents and induced others to also infringe upon the patents.