PANews reported on October 31 that, according to Cointelegraph, Western Union filed a trademark application for "WUUSD" with the U.S. Patent and Trademark Office on Wednesday. The WUUSD trademark can be used in multiple areas, including cryptocurrency wallets, cryptocurrency trading, and stablecoin payment processing. The trademark covers a range of stablecoin-related services. The application has been accepted but no examiner has been assigned. It is currently unclear what distinguishes WUUSD from its planned stablecoin USDPT, as Western Union also filed the exact same trademark application for USDPT in early October.

The application documents show that WUUSD can be used for stablecoin exchange, trading, and payment processing, and also suggest the provision of a wider range of cryptocurrency services, such as software for managing and verifying transactions, "consuming and trading cryptocurrencies," as well as cryptocurrency exchanges, trading, payment processing, and financial brokerage services. Furthermore, the documents mention cryptocurrency lending services, specifically "conducting securities and derivatives trading," which may significantly differ from Western Union's traditional business.

Previously, it was reported that Western Union planned to launch USDPT, a stablecoin built on the Solana blockchain, in 2026 ; Western Union has also applied to register the WUUSD trademark .