Oura has filed a new patent infringement lawsuit against Indian smart-ring maker Ultrahuman, aiming to halt U.S. sales of the Ultrahuman Ring Pro. The complaint was filed Thursday in a federal court in Texas. Oura is seeking monetary damages and a permanent injunction against Ultrahuman. The action threatens Ultrahuman's recent return to the American market.
According to the complaint, the Ring Pro infringes two Oura patents covering the ring's design and internal components, including its battery and sensors. One of the patents, 12,769,363, was issued to Oura on October 20, just two days before the suit was filed, and covers a smart-ring design incorporating a curved battery, circuit board, magnets, and sensors. Oura also argues that a March ruling from U.S. Customs and Border Protection, which cleared the redesigned Ring Pro for import, addressed only the patent at issue in an earlier dispute, not the two patents cited in the new case.
Ultrahuman's redesigned Ring Pro launched in February and received the favorable customs ruling in March. That decision followed an import ban on the company's earlier Ring Air, which took effect after Oura won a patent infringement ruling from the International Trade Commission in August last year. An Oura spokesperson said Ultrahuman has a history of copying Oura's innovations, as shown by the 2025 ITC ruling, and that the redesign did not resolve continued infringement.
The lawsuit also names Texas-based electronics manufacturer SVTronics as a defendant. The complaint alleges SVTronics builds the Ring Pro at a facility in Plano, Texas, under Ultrahuman's direction and control, and that both companies infringe Oura's patents through the device's manufacture, importation, and sale in the U.S.
Ultrahuman co-founder and CEO Mohit Kumar said the startup is confident in the Ring Pro and will defend its position vigorously. He noted that Oura has chosen to assert different patents, including one issued two days before the filing, and said no court order affects the Ring Pro, which remains available to U.S. customers.
Oura and Ultrahuman have been in patent disputes since 2023, when Oura sued over the Ring Air. Oura has also pursued claims against Samsung, RingConn, Circular, and Zepp Health; RingConn and Circular resolved their disputes through licensing agreements with royalties. The new case comes as IDC expects global smart-ring shipments to grow 12.8% this year to 4.9 million units and reach about 6.3 million by 2030, and weeks after Oura shelved a $2.2 billion IPO. In September, Ultrahuman raised $70 million from investors including Qualcomm Ventures and Labcorp at a valuation of about $365 million.
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