The case is DynaMuse LLC v. Plex, Inc., No. 1:26-cv-01124 (D. Del.), filed September 4, 2026. DynaMuse says it is a New Mexico company, and the complaint describes Plex as a Delaware corporation with an established place of business in Los Gatos, California. Venue is pleaded under 28 U.S.C. 1400(b). DynaMuse demands a jury.

The patent

U.S. Patent 10,491,646, titled Mechanism for Facilitating User-Controlled Features Relating to Media Content in Multiple Online Media Communities and Networks, issued November 26, 2019 from an application filed November 5, 2015. Claim 1 covers a computer-implemented method in which a media management device displays an interactive user interface while an audio or video item plays on a smartphone, tablet, wearable, laptop, or desktop, and a user selects a playlist assistance function, shown as an icon, that returns results exactly matched to search categories such as title, artist, album, or genre. The results include playlists drawn from the most popular playlists in a dynamic music service catalogue, links to media communities, and a dynamic feed about the user and other users, with the media item displayed or shared on social media webpages, and user changes trigger updates to collaborative applications.

What the lawsuit is about

DynaMuse alleges that Plex directly infringes, and since service of the complaint has induced infringement of, one or more claims of the '646 patent. The complaint identifies the accused products and the exemplary claims only in claim charts attached as Exhibit 2, which are not available. It alleges, on information and belief, that numerous other devices also infringe. DynaMuse asks for a judgment that the patent is valid and infringed, damages under 35 U.S.C. 284, and a finding that the case is exceptional under 35 U.S.C. 285.

Status

The clerk replaced the original complaint with a corrected version on September 4, 2026 to fix a clerical error. Plex received an extension of its answer deadline (ECF No. 7, so ordered October 2, 2026).

What to watch next

Watch for Plex's answer or Rule 12 motion under the extended deadline. The two same-day suits on the patent are No. 1:26-cv-01125 and No. 1:26-cv-01123.