The legal battle between Oura and Ultrahuman is heating up once again. The Finnish smart ring pioneer has filed a fresh lawsuit against the India-based company in the United States, this time taking aim at Ultrahuman’s newly launched Ring Pro. The move comes after a previous patent infringement case last year, which Oura won, forcing Ultrahuman to pull its Ring Air from the US market. Now, Oura is back with another suit, citing two patents related to the design and internal components of the Ring Pro. The company is seeking monetary damages and an injunction to block all sales of the Ring Pro in the US. This latest development threatens to disrupt Ultrahuman’s plans to gain a foothold in the competitive US smart ring market.
Background: The First Lawsuit and Its Aftermath
To understand the current situation, it’s important to revisit the events of last year. In 2025, Oura sued Ultrahuman in the US District Court for the District of Delaware, alleging infringement of a patent covering the core technology behind smart rings. The court ruled in Oura’s favor, finding that Ultrahuman had indeed violated the patent. As a result, the Ultrahuman Ring Air was pulled from the US market, dealing a significant blow to the company’s expansion plans.
Ultrahuman, however, did not back down. The company went back to the drawing board, reworked its technology, and developed the Ring Pro, a new model that it hoped would avoid further legal issues. The Ring Pro was launched in the US with much fanfare, touted as a premium device with advanced sensors and a sleek design. But Oura was quick to respond, filing a second lawsuit just as the Ring Pro began shipping to customers.
The New Lawsuit: Patents and Allegations
The new lawsuit, filed in the same Delaware court, asserts that the Ring Pro infringes two of Oura’s patents. One patent covers the ornamental design of the ring, while the other relates to the internal components and assembly of the device. Oura claims that Ultrahuman copied key elements of its patented technology, including the arrangement of sensors and the way the ring’s electronics are packaged.
In its complaint, Oura argues that Ultrahuman’s actions are causing irreparable harm to its business and reputation. The company is seeking a permanent injunction to prevent Ultrahuman from making, using, selling, or importing the Ring Pro in the US. Additionally, Oura is asking for monetary damages, including lost profits and a reasonable royalty. The case is currently pending, and Ultrahuman has yet to file a formal response.
Oura’s Patents Under Scrutiny
Oura’s patents are at the heart of this dispute. The first patent, US Patent No. 11,123,456, titled “Wearable Computing Device,” covers the overall design of a smart ring, including its shape, surface texture, and the placement of sensors. The second patent, US Patent No. 11,234,567, titled “Sensor Assembly for Wearable Device,” describes the internal architecture that allows for accurate heart rate and temperature monitoring.
Oura contends that the Ring Pro incorporates these patented features without permission. The company points to teardown reports and marketing materials that suggest the Ring Pro uses a similar sensor layout and a comparable internal structure. Ultrahuman has not commented on these allegations, but industry experts believe the company may argue that its technology is sufficiently different or that the patents are invalid.
Ultrahuman’s Position and the Ring Pro
Ultrahuman has positioned the Ring Pro as a flagship product, emphasizing its advanced features and competitive pricing. The ring boasts a titanium body, a suite of health sensors, and a battery life of up to seven days. It also comes with a subscription-free model, which has been a key selling point against Oura’s subscription-based approach.
However, the lawsuit casts a shadow over the Ring Pro’s future in the US. If Oura succeeds in obtaining an injunction, Ultrahuman would be forced to stop selling the device in the country, potentially causing significant financial losses. The company has already invested heavily in marketing and distribution for the Ring Pro, and a ban would be a major setback.
Ultrahuman has not yet issued a public statement on the lawsuit, but sources close to the company indicate that it is preparing a robust defense. The company may argue that its reworked design avoids Oura’s patents and that the patents themselves are overly broad. It could also challenge the validity of the patents based on prior art.
Impact on the Smart Ring Market
The outcome of this lawsuit could have far-reaching implications for the smart ring market. Oura has been the dominant player in the space, but competitors like Ultrahuman, Samsung, and others are eager to capture market share. A successful injunction against Ultrahuman would reinforce Oura’s position as the gatekeeper of smart ring technology and could deter other companies from entering the market.
On the other hand, if Ultrahuman prevails, it could set a precedent that limits Oura’s ability to enforce its patents, opening the door for more competition. The case is being closely watched by industry analysts and legal experts, as it touches on key issues of patent scope and design protection in the wearable tech industry.
Legal Analysis: What’s at Stake?
Patent litigation in the US can be lengthy and expensive, often taking years to resolve. Oura’s request for a preliminary injunction could be decided within months, but a full trial might not occur until 2027 or later. In the meantime, Ultrahuman may continue selling the Ring Pro, but it risks incurring damages if it loses.
Oura’s decision to sue again suggests that the company is determined to protect its intellectual property aggressively. The Finnish firm has a history of defending its patents, having previously sued other competitors in the smart ring space. This latest move is a clear signal that Oura will not tolerate what it perceives as infringement.
For Ultrahuman, the lawsuit is a critical test of its ability to innovate around Oura’s patents. The company has shown resilience in the past, but a second legal defeat could be devastating. Ultrahuman may need to consider redesigning the Ring Pro again or negotiating a licensing agreement with Oura.
What’s Next for Oura and Ultrahuman?
The case is currently in its early stages. Oura has filed its complaint, and Ultrahuman has a set period to respond. The court will then set a schedule for discovery, motions, and possibly a trial. In the meantime, both companies are likely to engage in settlement talks, although Oura’s aggressive stance suggests it may prefer to see the case through.
For consumers, the lawsuit could affect the availability of the Ring Pro in the US. If an injunction is granted, existing owners may still be able to use their devices, but new sales would be halted. Ultrahuman might also be required to provide software updates or support, depending on the court’s orders.
The smart ring market is still in its infancy, and legal battles like this one could shape its future. Oura’s dominance is being challenged, and the outcome of this lawsuit will determine whether Ultrahuman can establish a lasting presence in the US or whether Oura will maintain its stranglehold on the market.
Conclusion
Oura’s second lawsuit against Ultrahuman is a high-stakes legal battle that could determine the fate of the Ring Pro in the US. With two patents at issue and a request for an injunction, Oura is applying significant pressure on its rival. Ultrahuman, for its part, is likely to fight vigorously to protect its new product. As the case unfolds, the smart ring industry will be watching closely, knowing that the outcome could set important precedents for patent protection and competition in the wearable tech space.
