Denon Spent 10 Years Developing Heos, It Says in Response to Sonos Suit

D+M Group said in a statement Thursday it will "protect itself" against a lawsuit filed by Sonos last week (see 1410220043) alleging that its Heos by Denon wireless music system infringes on patents owned by Sonos. “D+M has been a technology innovator for over 100 years and has an extensive intellectual property portfolio to protect our products," Denon said. "Given our experience and wealth of expertise, we absolutely stand behind our Heos products and technology and are well prepared to defend our intellectual property,” said Jim Caudill, CEO, D+M Group. Denon said its engineers and designers worked "for more than 10 years to develop Heos by Denon."