Patent strengthens Company's global intellectual property portfolio and reinforces the Company's commitment to establishing and protecting competitive advantages

White Bear Lake, Minnesota--(Newsfile Corp. - December 16, 2025) - Envoy Medical® Inc. (NASDAQ: COCH) ("Envoy Medical" or the "Company"), a hearing health company pioneering fully implanted hearing solutions, today announced the issuance of Australian Patent No. 2022229818, granted by the Australian Patent Office on October 16, 2025.

The newly issued patent strengthens the Company's global IP portfolio in an important international market that is also the home country of its largest competitor. The Company remains focused on establishing differentiation within the marketplace and protecting competitive advantages. The Company understands the staggering cost – both in raw capital investment, time, and opportunity cost – it would take a competitor to recreate Envoy Medical's fully implanted cochlear implant, and it will continue to make important investments to further strengthen its technology and product pipeline.

"It has taken Envoy Medical roughly $300 million dollars and a few decades to get to where it is today," said Brent Lucas, Chief Executive Officer of Envoy Medical. "We have pioneered two fully implanted hearing technologies. We are the only company to have gotten a fully implanted active hearing device through the FDA approval process to date. We received Breakthrough Device Designation from the FDA for our fully implanted investigational cochlear implant. We believe we are going to be a leader as the industry moves to fully implanted hearing implants, and we will continue to carefully protect ourselves and make it difficult on others to recreate what we have in our product portfolio."

The patent, titled "Cochlear Implant System with Improved Input Signal-To-Noise Ratio," covers innovations involving an input source with a sensor and a powered signal modifier that includes an amplifier. In this design, the sensor receives an acoustic stimulus and outputs a signal that is immediately amplified to generate a robust analog input signal. Amplifying the signal at the input source helps reduce noise and interference within the system, supporting clearer and more reliable auditory performance.

"It is important to understand that Envoy Medical made certain critical design decisions around its fully implanted cochlear implant many years ago that others did not," said Brent Lucas, Chief Executive Officer of Envoy Medical. "Our sensor technology is fundamentally different from a subdermal microphone. Our replaceable rechargeable battery in the chest is fundamentally different from a non-replaceable rechargeable battery in the head. Our device does not come with an external sound processor or a magnet. We are approaching fully implanted cochlear implants differently than the competition, and we believe that we made the right design choices that will resonate with patients in the future and that the differentiation between our products and others will set us apart from the competition for many years to come."

The Acclaim cochlear implant received Breakthrough Device Designation from the FDA in 2019 and is currently under investigation as part of a U.S. based pivotal clinical trial. For more information on the trial, visit www.envoymedical.com/acclaim-pivotal.

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About Envoy Medical, Inc.
Envoy Medical (NASDAQ: COCH) is a hearing health company focused on providing innovative technologies across the hearing loss spectrum. Envoy Medical has pioneered one-of-a-kind, fully implanted devices for hearing loss, including its fully implanted Esteem® active middle ear implant, commercially available in the U.S. since 2010, and the fully implanted Acclaim® cochlear implant, an investigational device. Envoy Medical is dedicated to pushing hearing technology beyond the status quo to improve access, usability, compliance, and ultimately quality of life.

About the Fully Implanted Acclaim® Cochlear Implant
We believe the fully implanted Acclaim Cochlear Implant ("Acclaim CI") is a first-of-its-kind hearing device. Envoy Medical's fully implanted technology includes a sensor designed to leverage the natural anatomy of the ear instead of a microphone to capture sound.

The Acclaim CI is designed to address severe to profound sensorineural hearing loss that is not adequately addressed by hearing aids. The Acclaim CI is expected to be indicated for adults who have been deemed adequate candidates by a qualified physician.

The Acclaim Cochlear Implant received the Breakthrough Device Designation from the U.S. Food and Drug Administration (FDA) in 2019.

CAUTION The fully implanted Acclaim Cochlear Implant is an investigational device. Limited by Federal (or United States) law to investigational use.

About the Esteem® Fully Implanted Active Middle Ear Implant (FI-AMEI)
The Esteem fully implanted active middle ear implant (FI-AMEI) is the only FDA-approved, fully implanted* hearing device for adults diagnosed with moderate to severe sensorineural hearing loss allowing for 24/7 hearing capability using the ear's natural anatomy. The Esteem FI-AMEI hearing implant is invisible and requires no externally worn components and nothing is placed in the ear canal for it to function. Unlike hearing aids, you never put it on or take it off. You can't lose it. You don't clean it. The Esteem FI-AMEI hearing implant offers true 24/7 hearing.

*Once activated, the external Esteem FI-AMEI Personal Programmer is not required for daily use.

Important safety information for the Esteem FI-AMEI can be found at: https://www.envoymedical.com/safety-information.

Additional Information and Where to Find It
Copies of the documents filed by Envoy Medical with the SEC may be obtained free of charge at the SEC's website at www.sec.gov.

Forward-Looking Statements
This press release includes "forward-looking statements" within the meaning of the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-Looking statements may be identified by the use of words such as "estimate," "plan," "project," "forecast," "intend," "will," "expect," "anticipate," "believe," "seek," "target" or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters, but the absence of these words does not mean that a statement is not forward-looking. Such statements may include, but are not limited to, statements regarding the expectations of Envoy Medical concerning the outlook for its business, productivity, plans and goals for future operations; the ability to obtain additional patents and develop future products or product improvements; the ability to obtain and maintain compliance with Nasdaq rules and requirements; the timing and future outcome of its FDA pivotal trial; the ability to raise capital and the amount of capital required to complete the FDA pivotal trial; the Acclaim CI being the first to market fully implanted cochlear implant; the timing and results of activations, enrollments, follow-up visits, data, and clinical trials of the Acclaim CI; and the participation or any changes or delays in participation of any subjects, institutions, or healthcare professionals in such trials; the safety, performance, and market acceptance of the Acclaim CI; the timing and results of the Acclaim CI's PMA submission to the FDA; the size of Envoy Medical's addressable market, operational performance, future market conditions or economic performance and developments in the capital and credit markets; and any information concerning possible or assumed future operations of Envoy Medical. The forward-looking statements contained in this press release reflect Envoy Medical's current views about future events and are subject to numerous known and unknown risks, uncertainties, assumptions and changes in circumstances that may cause its actual results to differ significantly from those expressed in any forward-looking statement. Envoy Medical does not guarantee that the events described will happen as described (or that they will happen at all). These forward-looking statements are subject to a number of risks and uncertainties, including, but not limited to changes in the market price of shares of Envoy Medical's Class A Common Stock; changes in or removal of Envoy Medical's shares inclusion in any index; Envoy Medical's success in retaining or recruiting, or changes required in, its officers, key employees or directors; unpredictability in the medical device industry, the regulatory process to approve medical devices, and the clinical development process of Envoy Medical products; the ability to engage competition in the medical device industry, and the failure to introduce new products and services in a timely manner or at competitive prices to compete successfully against competitors; disruptions in relationships with Envoy Medical's suppliers, or disruptions in Envoy Medical's own production capabilities for some of the key components and materials of its products; changes in the need for capital and the availability of financing and capital to fund these needs; changes in interest rates or rates of inflation; legal, regulatory and other proceedings could be costly and time-consuming to defend; changes in applicable laws or regulations, or the application thereof on Envoy Medical; a loss of any of Envoy Medical's key intellectual property rights or failure to adequately protect intellectual property rights; the effects of catastrophic events, including war, terrorism and other international conflicts; and other risks and uncertainties set forth in the section entitled "Risk Factors" and "Cautionary Note Regarding Forward-Looking Statements" in the Annual Report on Form 10-K filed by Envoy Medical on March 31, 2025, and in other reports Envoy Medical files, with the SEC. If any of these risks materialize or Envoy Medical's assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. While forward-looking statements reflect Envoy Medical's good faith beliefs, they are not guarantees of future performance. Envoy Medical disclaims any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, new information, data or methods, future events or other changes after the date of this press release, except as required by applicable law. You should not place undue reliance on any forward-looking statements, which are based only on information currently available to Envoy Medical.

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