OpenAI Abandons “Cameo” Trademark Appeal as Sora Shutdown Renders Injunction Moot

OpenAI Inc. withdrew its Ninth Circuit appeal of a preliminary injunction barring the company from using the name “Cameo” on April 17, 2026. The abandonment came weeks after OpenAI announced the discontinuation of its Sora AI video generator on March 24, 2026, stripping the appeal of any practical purpose.

Background

The dispute began in October 2024, when Cameo Group, Inc.—the platform known for personalized celebrity video messages—filed a trademark infringement lawsuit against OpenAI. The claim centered on OpenAI’s use of the term “cameo” to describe a feature within its Sora AI video generator that allowed users to create celebrity-style personalized video content. Cameo argued the feature name was likely to cause consumer confusion with its registered CAMEO mark in the same entertainment and consumer video space.

Judge Eumi K. Lee of the U.S. District Court for the Northern District of California issued a preliminary injunction on February 14, 2026, ordering OpenAI to cease using the “Cameo” name in connection with Sora. OpenAI filed a notice of appeal to the Ninth Circuit on March 12, 2026.

On March 24, 2026, however, OpenAI publicly announced the discontinuation of the Sora application and API, citing the need to reallocate computing resources—estimated to cost approximately $1 million per day to operate—toward more profitable coding, reasoning, and text-generation services. With the product discontinued, OpenAI dismissed its appeal on April 17, 2026.

Feature Renamed Prior to Shutdown

Following the issuance of the preliminary injunction in February 2026, OpenAI had already renamed the disputed Sora feature from “Cameo” to “Characters,” achieving product-level compliance with the injunction before the shutdown. The appeal had sought to reverse the injunction, but with Sora’s impending shutdown, the underlying dispute became moot.

The Sora web and app experience is scheduled for discontinuation on April 26, 2026, while the Sora API will remain available through September 24, 2026. Disney separately cancelled its plans for a $1 billion investment in OpenAI following the Sora shutdown announcement.

Implications for AI Product Naming

The case illustrates the trademark exposure that arises when AI companies rapidly deploy products with feature names that collide with existing consumer brands. OpenAI’s “cameo” feature shared not only the identical name but also a closely adjacent consumer context—entertainment and personalized video content—with Cameo Group’s established platform, creating a high likelihood of confusion under trademark law standards.

As AI product teams increasingly assign distinctive names to models, features, and capabilities to aid user navigation, the incident underscores that trademark clearance must be applied to feature-level identifiers, not only to top-level brand names. The dismissal of the Ninth Circuit appeal resolves the injunction dispute, but the underlying trademark infringement claim in the district court action remains pending. Whether the parties will continue to litigate damages and permanent injunction relief in light of Sora’s discontinuation remains to be seen.