A United States federal judge has temporarily barred OpenAI from using the word “cameo” (or similar terms like “Kameo” or “CameoVideo”) to describe any feature in its Sora text-to-video app for at least one month.

On Monday, U.S. District Judge Eumi K. Lee issued the temporary restraining order in response to a trademark-infringement lawsuit filed in October by Cameo, the celebrity-video platform that lets users buy personalized messages from stars.

The dispute arose after OpenAI rolled out a Sora feature called “Cameo,” which enabled users to create AI-generated likenesses of themselves or others and insert them into videos, functionality Cameo argued would confuse consumers and dilute its well-known brand.

“We are gratified by the court’s decision, which recognizes the need to protect consumers from the confusion that OpenAI has created by using the Cameo trademark,” Cameo CEO Steven Galanis said in a statement. “While the court’s order is temporary, we hope that OpenAI will agree to stop using our mark permanently to avoid any further harm to the public or Cameo.”

OpenAI did not immediately respond to a request for comment.The preliminary injunction is scheduled to expire on December 22, with a hearing to determine whether it should be made permanent set for December 19.