Oura Sues Ultrahuman Again Over Ring Pro Smart Ring in US

Oura has sued Ultrahuman for a second time, this time targeting the Ring Pro, the redesigned smart ring Ultrahuman sells in the US. The complaint, filed in a Texas federal court, alleges infringement of two Oura patents covering design and internal components. Oura wants monetary damages and an order halting sales of the device.

A brand-new patent in the mix

One of the patents, number 12,769,363, was granted just two days before the suit was filed. It appears to broadly cover a smart ring design with a housing, a battery and specific internal components. Oura also named SVTronics as a defendant. The company manufactures the Ring Pro in Plano, Texas, for the US market under Ultrahuman's direction.

In a blog post, Oura said Ultrahuman introduced a modified ring after being found to infringe, claiming the redesign avoided Oura's patents. "That claim is false," Oura wrote, arguing the new ring still uses many of its patented innovations.

Background of the dispute

Last year Oura won a case against Ultrahuman, and the ITC ruled that the Ring Air violated several Oura patents, leading to a US sales ban. The Ring Air remains on sale in Europe and other markets. Ultrahuman then redesigned its ring as the Ring Pro and received approval from US Customs and Border Protection earlier this year.

Ultrahuman says it will fight the case and that the Ring Pro is still on sale in the US. A spokesperson said Customs had determined the Ring Pro did not infringe the Oura patent considered in the earlier proceeding, and that Oura has now asserted different patents, including one issued two days before the filing. The company said it will defend its position vigorously.

Why it matters

The case shows how far Oura is willing to go to protect its position in the smart ring market. The Finland-based company is also in a prolonged patent fight with Samsung, which sued Oura pre-emptively in 2024 over the Galaxy Ring, after which Oura countersued. For shoppers, the outcome could decide whether Ultrahuman's current ring stays available in the US.