Oura, the Finnish maker of the Oura Ring, filed a patent infringement lawsuit on Thursday asking a federal court in Texas to stop U.S. sales of Ultrahuman’s Ring Pro. The complaint arrives only months after the redesigned ring brought the Bengaluru-based startup back to the American market following an import ban.
What Oura is Claiming
Oura says the Ring Pro infringes two patents: design patent D804,471 and utility patent 12,769,363. The second covers a smart ring built with internal parts such as a curved battery, circuit board, magnets, and sensors. The patent was issued on October 20, two days before Oura filed suit. Oura is asking for monetary damages and a permanent injunction that would block Ultrahuman from selling the ring.
The complaint also names SVTronics, a Texas electronics manufacturer. Oura alleges that the company builds the Ring Pro at a facility in Plano under Ultrahuman’s direction and control, and that both companies infringe through the manufacture, import, and sale of the device in the United States.
Why the Customs Ruling Does Not Settle It
The new case follows a long fight. Oura won a patent ruling from the International Trade Commission in August 2025, which led to an import ban on Ultrahuman’s earlier Ring Air. Ultrahuman launched the redesigned Ring Pro in February, and U.S. Customs and Border Protection issued a favorable ruling in March, which cleared the way for its return.
Oura argues that the Customs decision covered only the patent from the earlier dispute. It says the two patents in this lawsuit were never part of that review. For readers, the practical point is that clearance on one patent does not protect a product from claims under others.
An Oura spokesperson said Ultrahuman has a history of copying Oura’s innovations and failed to fix continued infringement in its redesign. Ultrahuman did not respond to a request for comment.
A Pattern of Enforcement
The two companies have been in court since 2023, when Oura first sued over the Ring Air. Ultrahuman is not the only target. Oura has also pursued Samsung, RingConn, Circular, and Zepp Health. Some of those disputes ended in licensing deals, with RingConn and Circular agreeing to pay Oura royalties to keep selling their rings in the U.S.
The Market and the Money
The stakes are rising because the category is growing. IDC expects global smart ring shipments to climb 12.8 percent this year to 4.9 million units and reach about 6.3 million by 2030.
Both companies face a sensitive moment. Oura shelved a planned $2.2 billion IPO last month, citing market uncertainty. Ultrahuman raised $70 million in September at a valuation of about $365 million, with backing from Qualcomm Ventures and Labcorp, and it is working with Qualcomm on a ring that can run more software directly on the device.
What to Watch Next
The court has not ruled, and Ultrahuman has not yet answered the allegations in public. Two outcomes are most plausible based on past cases: a royalty agreement like the ones Oura reached with RingConn and Circular, or a prolonged legal fight that could again interrupt Ultrahuman’s U.S. sales. Either result will shape how much room smaller smart ring brands have to compete with the category leader.
