The case refers to alleged patent violations by Comcast on TiVo’s X1 set-top box. Comcast has said it will go on appeal.

On Wednesday, the U.S. International Trade Commission (ITC) ruled in favor of Rovi Corp, now known as TiVo Corp, while prohibiting Comcast Corp from importing and selling certain types of Rovi’s Xfinity X1 set-top boxes.

The final ruling bans only certain X1 set top boxes, which violates two patents, and not the X1’s legacy versions.

The ban will be effective immediately unless it is overturned by the U.S. President Donald Trump’s administration during the Presidential review period.

On Tuesday, the commission stated, it is too hypothetical to determine whether Comcast’s two alternative designs infringe the patents.

“Today’s Commission Opinion reinforces the need for Comcast to take the necessary licenses to our IP,” said Rovi in an e-mailed statement.

In an e-mailed statement, Comcast said it disagreed with the trade commission’s decision and will appeal the ruling.