Oura files a new patent lawsuit against Ultrahuman to block the Ring Pro in the US, targeting internal components and design just after a market comeback.

The high-stakes war for the finger-worn wearable market has entered a volatile new phase. Oura, the Finland-based pioneer of the smart ring category, has launched a fresh legal offensive against its Indian rival, Ultrahuman. The goal is clear: to once again purge the American market of a primary competitor by seeking a permanent injunction against the sale of the Ring Pro.

This latest legal maneuver comes at a precarious moment for the Bengaluru-based startup. Ultrahuman had only recently managed to navigate its way back into the United States. After the International Trade Commission (ITC) issued a ruling in 2025 that blocked the import of the Ring Air due to patent infringement, Ultrahuman spent months redesigning its hardware. The resulting Ring Pro was launched in February and received a green light from U.S. Customs and Border Protection in March, which the company believed had cleared its path for a commercial comeback.

A strategic strike on internal architecture

Oura is not relying on the same legal arguments used in the previous dispute. In a complaint filed in a federal court in Texas, Oura alleges that the Ring Pro violates two specific patents: D804,471 and 12,769,363. These patents cover the fundamental design and the internal components of the device, specifically focusing on the arrangement of the battery and sensors within the constrained circular housing.

The timing of the filing suggests a calculated strategy. Patent 12,769,363 was granted to Oura on October 20, 2026—exactly two days before the lawsuit was filed. This new patent broadly covers the integration of a curved battery, circuit board, magnets, and sensors. By waiting for the ink to dry on this specific intellectual property (IP) right, Oura has created a new legal hurdle that the previous Customs and Border Protection ruling did not account for.

The Texas connection and manufacturing liability

In a move that expands the scope of the litigation, Oura has not only targeted the brand but also the supply chain. The lawsuit names SVTronics, an electronics manufacturer based in Plano, Texas, as a defendant. Oura alleges that SVTronics produces the Ring Pro at its Texas facility under the direct control and instruction of Ultrahuman.

By bringing the manufacturer into the suit, Oura is targeting the point of origin. If the court finds that the Ring Pro is being manufactured on US soil using infringing technology, the legal remedy is more direct than an import ban; it could potentially shut down the production line itself. This puts Ultrahuman in a difficult position, as the company had specifically pivoted to US-based manufacturing to bypass the import restrictions imposed by the ITC.

A history of reciprocal legal warfare

The tension between these two companies is not a one-way street. While Oura has been aggressive in the US, Ultrahuman has attempted to fight back on home turf. In 2025, Ultrahuman filed its own patent infringement lawsuit against Oura in the Delhi High Court in India. The Indian startup claimed that Oura had copied its advanced intellectual property, specifically citing women's health features, glucose monitoring platforms, and circadian health tools.

Ultrahuman’s lawsuit in India has no merit and is a blatant attempt to distract from their decisive U.S. defeat.

However, that counter-attack failed to gain traction. The Delhi High Court dismissed Ultrahuman's suit on September 1, 2025. Despite this setback, Ultrahuman has maintained that Oura is using recently purchased patents to stifle competition rather than protecting genuine, long-term R&D. The company argues that many of the components Oura claims as proprietary have existed in the industry for years.

The broader pattern of IP aggression

The battle with Ultrahuman is part of a wider campaign by Oura to safeguard its market leadership. The company has consistently pursued other competitors, including Samsung and RingConn, in similar patent disputes. Oura's strategy appears to be the creation of a "patent moat" around the physical architecture of the smart ring—specifically how to fit a battery and sensors into a curved, miniature form factor without sacrificing battery life or accuracy.

For Oura, this is about more than just one product. The company recently launched the Oura Ring 5, which it markets as the world's smallest and most accurate smart ring. By aggressively litigating against rivals who use similar internal layouts, Oura ensures that any competitor entering the space must either innovate a completely different hardware architecture or pay licensing fees.

Market implications for the wearable sector

The outcome of this case will likely dictate how smart ring startups approach product development. If Oura successfully blocks the Ring Pro, it sends a signal that "redesigning around" a patent is not enough if the core internal architecture remains similar. This increases the barrier to entry for new players who lack the capital to conduct entirely original hardware research from the ground up.

The industry is currently seeing a convergence of health tech and AI, where the hardware is merely a vessel for data collection. However, as this legal battle proves, the physical "vessel"—the ring itself—remains the primary battlefield for intellectual property. The ability to miniaturize components while maintaining medical-grade sensor accuracy is the most valuable asset in the current wearable race.

Global business perspective: US and UK implications

For entrepreneurs and tech firms operating in the US and UK markets, the Oura-Ultrahuman saga highlights the extreme risks associated with hardware iteration in highly litigious environments. In the United States, the use of the International Trade Commission (ITC) as a tool for rapid market exclusion is a potent weapon that can bankrupt a startup before it even gains a foothold.

Companies expanding into the US should be aware that securing a favorable ruling from Customs and Border Protection is not a permanent shield. As seen here, a competitor can simply wait for a new patent to be issued and file a fresh lawsuit in a favorable jurisdiction, such as the Eastern District of Texas, which is known for its specific approach to patent litigation.

In the UK and broader global markets, where IP enforcement can differ from the US "litigation-first" culture, firms must realize that their global strategy is only as strong as their weakest regional legal standing. A product that is legally sold in Europe or India can still be blocked in the US, creating a fragmented brand presence that complicates global scaling and investor relations. For those in the AI and health-tech space, the lesson is clear: hardware patents are often more dangerous than software disputes because they can lead to total market exclusion.

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Sources: TechCrunch, Engadget, Ouraring ·