ALEXANDRIA, Va., July 28 -- United States Patent no. 12,694,270, issued on July 28, was assigned to Maplebear Inc. (San Francisco).

"Training detection model using output of language model applied to event information" was invented by Ze He (Sunnyvale, Calif.), Dian Ding (Santa Clara, Calif.) and Hechao Sun (Mountain View, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments relate to an automatic detection of fraudulent behavior for a transaction at an online system. The online system requests a large language model (LLM) to determine, based on a prompt input into the LLM, information about a refund event for a first order placed by a user of the online system. The online system accesses a comp...