Sennheiser Electronic Corporation

Sennheiser Electronic Corporation is the U.S. subsidiary of Sennheiser electronic GmbH & Co. KG, a privately held German audio equipment manufacturer. Founded by Fritz Sennheiser in 1945, the parent company is headquartered in Wedemark, Germany, and remains controlled by the Sennheiser family. The U.S. subsidiary has its headquarters in Old Lyme, Connecticut. The Sennheiser Group reported revenue of €527.2 million in 2023 for its professional audio business and employed 2,196 people worldwide as of late 2024.

Sennheiser is an operating company that develops and manufactures professional audio technology. Its product lines include wireless microphone and monitoring systems, wired microphones, conference and meeting technology, professional headphones, and 3D audio software. The company serves the live production, studio recording, broadcast, filmmaking, and corporate markets. In 2021, Sennheiser sold its consumer electronics division, which includes headphones and soundbars, to the Swiss company Sonova Holding AG, which operates the business under a brand license.

As a manufacturer, Sennheiser's patent litigation profile is that of an operating company defending its products. The company has been named as a defendant in two tracked U.S. patent cases and has not appeared as a plaintiff. This posture is consistent with a technology producer being targeted by patent assertions rather than an entity that actively asserts patents. The two suits against the company were filed in the U.S. District Court for the District of Delaware, a common venue for patent litigation.

Both tracked cases were filed on March 1, 2024, by Earin AB, a Swedish audio technology company. Earin AB has also filed similar patent infringement lawsuits against other audio equipment manufacturers, including Skullcandy and Audio-Technica, in U.S. district courts.