Many Worlds 2T Innovations Sues Spotify in Massachusetts on Five Recommendation Patents.

The case

Many Worlds 2T Innovations LLC v. Spotify AB and Spotify USA Inc., No. 1:26-cv-14945 (D. Mass.), is a 49-page complaint for patent infringement filed November 2, 2026, Document 1, with a jury demand. Many Worlds is a Texas limited liability company based in Austin, Texas. Spotify AB is organized under the laws of Sweden and based in Stockholm, and Spotify USA Inc. is a Delaware corporation registered to do business in Massachusetts. The complaint pleads venue as to Spotify USA under 28 U.S.C. § 1400(b), based on a Boston office it says Spotify leases and holds out as an East Coast research and development hub, and as to Spotify AB under 28 U.S.C. § 1391(c)(3).

The complaint says that on April 16, 2026, Many Worlds sued Spotify AB, Spotify USA Inc., and their parent company on the same five patents in No. 2:26-cv-00303 (E.D. Tex.), and that Spotify USA Inc. was served on April 17, 2026 and Spotify AB on April 27, 2026. It pleads that filing and service as actual notice under 35 U.S.C. § 287(a).

The patents

The asserted patents are U.S. Patents 8,655,829 (Activity stream-based recommendations system and method, issued February 18, 2014), 8,676,742 (Contextual scope-based discovery systems, issued March 18, 2014), 8,843,433 (Integrated search and adaptive discovery system and method, issued September 23, 2014), 9,454,729 (Serendipity generating method, system, and device, issued September 27, 2016), and 10,699,202 (Inferential-based communications method and system, issued June 30, 2020). The complaint says Many Worlds owns all substantial rights in them and that they claim priority to provisional applications filed in 2011.

The complaint says the '433 patent expired on September 23, 2026, when the 11.5-year maintenance fee was not paid by the end of the grace period, that a petition to accept the delayed payment as unintentional was filed under 37 C.F.R. § 1.378 on October 7, 2026 and is pending, and that Count 3 seeks relief only for infringement during the patent's term. Claim 8 of the '433 patent covers a system with processors configured to identify a content object as a contextual reference, access values based on inferences of a user's interest level in topics derived from behaviors, access values based on the inferred relevance to a topic of phrases contained in the content object, and generate a recommendation of one or more objects for the user in accordance with both sets of values.

The accused products

The complaint accuses Spotify's applications, web players, server infrastructure, Two Tower (2T) recommendation engine, and Talk to Spotify feature. It describes the 2T model as two neural networks, a user tower and a content tower, whose outputs are compared in vector space to generate recommendations, and describes Talk to Spotify as a beta feature, announced July 14, 2026, that lets eligible Premium users make voice or text requests in the mobile app. The complaint excludes from the accused instrumentalities, and seeks no relief for, Spotify applications preinstalled on or distributed through the app store of a device maker licensed under the patents, functionality reached through such a maker's voice assistant or first-party media applications, and any conduct released, licensed, or covered by a covenant not to sue.

Counts and relief

The complaint pleads five counts, one per patent: Count 1 (the '829 patent, at least claims 1 and 8), Count 2 (the '742 patent, at least claims 1, 5, and 8), Count 3 (the '433 patent, at least claims 1 and 8, during its term), Count 4 (the '729 patent, at least claims 1 and 8, with the Talk to Spotify allegation on claim 8 made on information and belief), and Count 5 (the '202 patent, at least claims 1, 8, and 15). Each alleges direct infringement under 35 U.S.C. § 271(a) and induced infringement under § 271(b), with knowledge alleged at least from the filing of the E.D. Tex. complaint and, for the Talk to Spotify allegations in Counts 1, 2, 4, and 5, at least from this complaint.

The prayer asks for a declaration that Spotify has directly infringed and induced infringement of all five patents and continues to infringe the '829, '742, '729, and '202 patents; damages no less than a reasonable royalty with prejudgment and post-judgment interest for the full period permitted by 35 U.S.C. §§ 286 and 287; an injunction under 35 U.S.C. § 283 as to the '829, '742, '729, and '202 patents; attorneys' fees under 35 U.S.C. § 285 or as otherwise permitted by law; and other costs and relief.

Docket activity

Through November 4, 2026, the docket shows the complaint, a report on the filing of a patent case, a corporate disclosure statement, a notice of appearance, a notice of case assignment on November 2, and summons issued November 3.

What to watch next

Watch for service on Spotify AB and Spotify USA Inc., their answers or motions to dismiss or transfer, and any filing in No. 2:26-cv-00303 (E.D. Tex.) addressing the two cases.