Defendant
1 case as defendant.
Denon is a Japanese electronics brand founded in 1910 that operates in the U.S. as Denon Electronics (USA), LLC. The brand is owned by Sound United, LLC, which itself was acquired by and now operates as a division of Masimo Corporation (NASDAQ: MASI), a global medical technology company, in a deal that closed in April 2022. Sound United's headquarters are in Carlsbad, California. Denon's U.S. operations have previously been listed with a headquarters in Mahwah, New Jersey.
Denon is an operating company that manufactures and sells high-fidelity consumer and professional audio equipment. Its major product lines include audio/video (AV) receivers, amplifiers, headphones, soundbars, turntables, CD players, and wireless multi-room speakers under the HEOS (Home Entertainment Operating System) brand. The company has a long history of innovation in audio technology, including developing one of the first digital recorders in the 1970s and early professional and consumer CD players in the 1980s.
Based on its litigation history, Denon is an operating company that defends itself in patent disputes rather than initiating them. The company has been a defendant in one tracked patent case and has not appeared as a plaintiff. This defendant-only posture is typical of a manufacturer being targeted for its technology, rather than a non-practicing entity (NPE) asserting patents for licensing revenue. The single tracked case was filed in the U.S. District Court for the District of Delaware, a common venue for corporate and patent litigation.
The company's only tracked litigation is a prominent 2014 case, Sonos, Inc. v. D&M Holdings Inc. d/b/a THE D+M GROUP et al. At the time of the lawsuit, Denon was part of D&M Holdings, which was formed in 2002 through a merger of Denon and Marantz. D&M Holdings was later acquired by Sound United in 2017. The lawsuit with Sonos, a major competitor in the wireless home audio market, involved allegations of patent infringement related to multi-room audio technology.
The case was terminated following a confidential settlement agreement between the parties, and the dismissal was filed with prejudice. During the proceedings, patent 7,571,014 was subject to a claim construction ruling.