A website has been ordered to remove a design for a 3D-printed model of the "Left Shark" dancer from the Super Bowl half-time show.
Lawyers for singer Katy Perry contacted Fernando Sosa, who had sold the design via an online directory of blueprints.
Left Shark became a viral hit after appearing to forget its steps during a routine with the 30-year-old artist.
3D-printing is becoming an increasing headache for companies trying to protect their intellectual property.
Falling costs of 3D printers, coupled with a growing community of model designers, means many small products can be made to a relatively high quality.
In a letter, the lawyers said Perry had not consented to the use of the shark, which was being sold through Shapeways.com.