Envoy Medical Expands Patent Portfolio by Securing Additional European Patent for Breakthrough Cochlear Implant TechnologyPatent covers advanced signal processing for middle ear sensors, further advancing the Company's position in leveraging the ear for fully implanted hearing devicesSeptember 19, 2025 8:00 AM EDT | Source: Envoy Medical, Inc.White Bear Lake, Minnesota--(Newsfile Corp. - September 19, 2025) - Envoy Medical® Inc. (NASDAQ: COCH) ("Envoy Medical"), a hearing health company focuse ...