Oura Sues Ultrahuman Again Over Ring Pro Design, Escalating Smart-Ring Patent War

The New Legal Challenge

Oura, the Finnish smart-ring manufacturer, has filed a fresh patent infringement lawsuit against Indian rival Ultrahuman in federal court in Texas, targeting the latter's redesigned Ring Pro device. The complaint, filed Thursday, claims that Ultrahuman's ring violates two of Oura's patents—one covering design elements and another addressing internal components including the battery, circuit board, magnets, and sensors. The lawsuit seeks monetary damages and a permanent injunction to halt Ultrahuman's U.S. sales. Notably, one of the patents cited (number 12,769,363) was issued to Oura just two days before the lawsuit was filed, suggesting the company moved swiftly to protect newly granted intellectual property. Texas-based manufacturer SVTronics, which produces the Ring Pro at a facility in Plano, has also been named as a defendant alongside Ultrahuman.

The Comeback Story and Legal Setback

Ultrahuman's Ring Pro launch in February represented a significant milestone for the startup's U.S. market re-entry. After an import ban took effect on its earlier Ring Air model following Oura's 2024 victory at the International Trade Commission, Ultrahuman redesigned its product to address patent concerns. In March, U.S. Customs and Border Protection issued a favorable ruling permitting the redesigned Ring Pro to enter American markets. However, Oura argues that this customs decision covered only the specific patent involved in the prior dispute, leaving two additional patents unaddressed. The company contends that Ultrahuman merely cosmetically altered its device while failing to eliminate alleged infringements.

A Broader Aggressive Patent Strategy

The Ultrahuman lawsuit represents just one front in Oura's expanding intellectual property campaign. The company has pursued patent disputes against multiple competitors in the rapidly growing smart-ring sector, including Samsung, RingConn, Circular, and Zepp Health. Some rivals have capitalized on licensing agreements rather than enduring prolonged litigation—RingConn and Circular both negotiated to pay royalties to Oura to maintain their U.S. sales. This pattern suggests Oura views patent enforcement as a central business strategy for maintaining market dominance, particularly as new entrants threaten its leading position.

Market Dynamics and Industry Growth

The timing of this litigation coincides with substantial market expansion in the smart-ring category. Research indicates global shipments are projected to reach 4.9 million units in 2026, representing 12.8% year-over-year growth, with forecasts suggesting 6.3 million units by 2030. While Oura remains a category leader, competitors like Ultrahuman are aggressively gaining ground. Ultrahuman's recent fundraising demonstrates the sector's investment momentum—the startup closed a $70 million financing round in September led by Qualcomm Ventures and Labcorp, achieving a valuation near $365 million. The startup is simultaneously developing next-generation products in partnership with Qualcomm that could expand smart-ring capabilities beyond health and fitness into AI interactions and gaming.

Corporate Context and Strategic Implications

Oura's aggressive lawsuit strategy emerges shortly after the company shelved its planned $2.2 billion initial public offering, citing market uncertainty. Despite postponing public markets plans, Oura continues enhancing its product suite, having introduced new cardiovascular fitness metrics this week. The company's patent enforcement approach appears designed to consolidate market leadership and establish licensing revenue streams before competitors can establish independent footholds. For Ultrahuman, the lawsuit represents an existential threat to its freshly regained American market access, forcing the startup to choose between expensive litigation, design concessions, or licensing negotiations. The dispute underscores how patent portfolios increasingly determine competitive outcomes in nascent hardware categories before dominant platforms emerge.