Ultrahuman on Friday unveiled a new smart ring with longer battery life and a redesigned form factor, as the Bengaluru-based wearable maker seeks to revive its U.S. business that was disrupted last year by a patent dispute with rival Oura. The Ring Pro, Ultrahuman’s third-generation smart ring, offers up to 15 days of battery life — compared with four to six days on the Ring Air — and is priced at $479. It will be available for preorders globally, excluding the U.S., with shipments beginning in March. Ultrahuman’s U.S. business was disrupted in October 2025 after the U.S. International Trade Commission — a federal agency that handles trade disputes — ruled in Oura’s favor in a patent dispute. The ruling prevented the startup from importing new ring inventory into the country, although existing retail stock continued to be sold. The blow was significant. The U.S. accounted for about 45% of Ultrahuman’s roughly 700,000 daily active users worldwide, according to co-founder and CEO Mohit Kumar.…