Sling on Monday asked the U.S. International Trade Commission to dismiss Belkin from its complaint filed in January.
Sling and Belkin declined to comment Friday.
Sling, a subsidiary of EchoStar, also has filed suit against other rivals, including Monsoon Multimedia. The company has accused its competitors of patent infringement related to technology used in its Slingbox, a device that allows users to watch and control their home television from anywhere. Belkin and Monsoon make products that compete with the Slingbox at lower prices.
The lawsuit, filed in U.S. District Court for the Northern District of California, alleged that the companies violated five Slingbox patents, including U.S. Patent 7,725,912, "Method for Implementing a Remote Display System with Transcoding"; U.S Patent 7,877,776, "Personal Media Broadcasting System"; U.S. Patent 8,051,454, "Personal Media Broadcasting System with Output Buffer"; U.S Patent 8,060,909, "Personal Media Broadcasting System"; and U.S Patent 8,266,657, "Method for Effectively Implementing a Multi-Room Television System."