SAN FRANCISCO — Munger, Tolles & Olson is representing an alliance of the major movie studios along with streaming content providers Amazon and Netflix in a copyright suit against the maker of a TV-connected device called Dragon Box.

The suit, filed in federal court in Los Angeles Wednesday, alleges that Dragon Box and its CEO “sell illegal access to plaintiff's copyrighted works.” According to the complaint, Dragon Box does not actually rip off the content itself, and instead allows users to view infringing videos via third-party “addons.”

Dragon Box did not immediately respond to an emailed request for comment Thursday morning. The company is headquartered in Carlsbad, according to its website.

Plaintiffs include Netflix, Amazon.com Inc., Columbia, Disney, Paramount Pictures, Twentieth Century Fox, Universal Studios and Warner Bros. Entertainment Inc. Munger Tolles' Kelly Klaus is leading the lawsuit for the plaintiffs.

The suit illustrates just how much streaming services like Netflix have become content creators themselves. Among the works the complaint names as being allegedly pirated are the sci-fi adventure series “Stranger Things” from Netflix and the dystopian post-war drama “The Man in the High Castle” from Amazon.

The complaint highlights marketing material from Dragon Box boasting that all the material is free. “Get rid of your Premium Channels … Stop paying for Netfix [sic] and Hulu,” reads one ad.

In total, more than 80 add-ons are available for Dragon Box users to access different content, such as sports and films that are currently in theaters, according to the lawsuit.

“Defendants' customers use Dragon Box for intended and unquestionably infringing purposes, most notably to obtain immediate, unrestricted and unauthorized access to unauthorized streams of plaintiffs' copyrighted works,” the complaint adds.