The maker of Polaroid cameras is suing GoPro, saying the Hero 4 Session copies its Polaroid Cube camera design.

New Jersey-based C&A Marketing, which manufactures all of Polaroid’s cameras, filed a lawsuit against GoPro on Tuesday in the U.S. District Court in Newark, New Jersey, The Wall Street Journal reported.

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C&A is seeking a halt on all sales of the Session and an award of an unspecified amount of money, including all of GoPro’s profit from the Session. The Polaroid Cube made its debut in August 2014, while the Session launched in July of this year.

GoPro said its European Union patents for the Session and a U.S. patent for the plastic case, all of which were issued in March, show the company was working on its product long before Polaroid filed for its patent. The company is still waiting for its U.S. patent for the Session that it applied for last year.

C&A applied for its 14-year patent in January 2014 and received it in May 2015, though it patent doesn't detail the size of the camera. The claim is brief and vague — "the ornamental design for a cubic action camera, as shown and described" — and is accompanied by seven illustrations of the Cube, one of which is shown below. A federal jury may have to determine if the the Session's similarities to the Cube infringe on C&A's patent.

Image: C&A Marketing

The lawsuit is another addition to the struggles GoPro has been facing recently. The company has reported sales and profits are coming in below analysts' expectations. The company generated $400 million in revenue in the third quarter, underperforming estimates of $434 million. And last month, GoPro dropped the Session's price from $400 to $300.