Oura sues Ultrahuman again, targeting its US ring comeback

Oura has sued Ultrahuman for a second time, this time over the Indian startup’s redesigned Ring Pro — the same product that let Ultrahuman return to the U.S. market earlier this year after an import ban. The new complaint — filed this past Thursday with a federal court in Texas — alleges that the Ring Pro infringes two Oura patents covering the ring’s design and its internal parts, including the battery and sensors. Oura wants the court to award damages and issue a permanent injunction blocking U.S. sales of the device.

The dispute follows a familiar pattern for the two companies. In March, U.S. Customs and Border Protection ruled in Ultrahuman’s favor, clearing the way for the redesigned ring to return to American shelves after its earlier Ring Air had been blocked under an ITC patent ruling Oura secured last August. Oura contends that the Customs ruling applied only to the patent at issue in that earlier case — not to the two patents behind this new filing, identified as D804,471 and 12,769,363. That second patent — 12,769,363 — is brand new: Oura was granted it on October 20, a mere two days before filing suit, and it covers internal ring components — a curved battery, circuitry, magnets, and sensors. The complaint also names Texas-based SVTronics, which it says manufactures the Ring Pro at a plant in Plano, Texas, allegedly under Ultrahuman’s direction and control, and accuses both companies of infringement through the device’s manufacture, import and sale in the U.S.

An Oura spokesperson said in a statement that Ultrahuman has a pattern of copying Oura’s designs, pointing to the 2025 ITC ruling as evidence, and argued that despite the redesign, the newer Ring Pro keeps infringing Oura’s patents while trying to ride on Oura’s innovation and market position. Ultrahuman co-founder and CEO Mohit Kumar rejected the claims. “Oura has now chosen to assert different patents, including one that issued just two days before this lawsuit was filed,” Kumar said. “We will address these claims through the appropriate legal process and will defend our position vigorously. There is no court order affecting Ring Pro, and it remains available to customers in the U.S.”

The two firms have clashed over patents since 2023, when Oura first sued Ultrahuman over the original Ring Air. A separate case Oura brought before the International Trade Commission in 2024 led to last year’s ruling and the resulting import ban. The category itself is growing fast: IDC projects a 12.8% rise in global shipments this year, to 4.9 million units, with the market expanding toward roughly 6.3 million units by 2030. Oura remains the category’s leader even as rivals such as Ultrahuman gain ground.

Why it matters

The case could again block Ultrahuman’s path back into the U.S. just as the smart-ring market accelerates, underscoring how aggressively Oura is using its patent portfolio to defend the lead it has built in a fast-growing category.