Authentixx LLC v. Pickleball OpCo LLC

CourtDistrict Court, N.D. Texas
DecidedJune 26, 2026
Docket3:25-cv-01599
StatusUnknown

This text of Authentixx LLC v. Pickleball OpCo LLC (Authentixx LLC v. Pickleball OpCo LLC) is published on Counsel Stack Legal Research, covering District Court, N.D. Texas primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Authentixx LLC v. Pickleball OpCo LLC, (N.D. Tex. 2026).

Opinion

UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF TEXAS DALLAS DIVISION

AUTHENTIXX LLC, § § Plaintiff, § § v. § CIVIL ACTION NO. 3:25-CV-1599-B § PICKLEBALL OPCO LLC, § § Defendant. §

MEMORANDUM OPINION AND ORDER Before the Court is Defendant Pickleball OpCo LLC (“Pickleball”)’s Motion to Dismiss (Doc. 17) made pursuant to Federal Rule of Civil Procedure 12(b)(6) for failure to state a claim. Plaintiff Authentixx LLC has filed a response (Doc. 18), and Pickleball has filed a reply (Doc. 19). For the reasons that follow, the Motion is GRANTED, and the case is DISMISSED WITH PREJUDICE. I. BACKGROUND Authentixx owns U.S. Patent No. 10,355,863, which is titled “System and method for authenticating electronic content.” Doc. 15, Am. Compl. ¶¶ 8–9. Pickleball (the party) operates a website for finding recreational pickleball (the sport) leagues and accessing other pickleball-related content. See generally Doc. 15-2, Am. Compl. Ex. 2. In this lawsuit, Authentixx has accused Pickleball’s website of directly infringing the ’863 Patent. See Doc. 15, Am. Compl. ¶¶ 26–30. The ’863 Patent “relates generally to computer security, and more particularly, to systems and methods for authenticating web pages and email messages.” ’863 Patent at 1:19–21. In “conventional web page authentication systems,” internet users could identify that they were on the webpage that they intended to visit by looking for “corporate logos, patterns, characters, symbols, or other indicators” associated with the legitimate website. Doc. 15, Am. Compl. ¶ 10 (quoting ’863

Patent at 1:25–26). Think, for example, if you were to visit uscourts.gov and felt satisfied you were on the correct webpage by seeing the navy-and-white U.S. Courts logo in the top-left corner. But markers of authenticity (like the U.S. Courts logo) “can be copied and used to defraud a prospective customer.” Id. (quoting ’863 Patent at 1:30–31). And “‘it is relatively easy for a “fraudster” to register a URL that is like the one the user is expecting, but is not quite the same,’ creating situations where ‘a user may retrieve an unwanted webpage that appears authentic.’” Id. (quoting ’863 Patent at 1:33–

35). To address that problem, “the ’863 Patent claims unconventional and inventive methods for web page authentication that integrate server-based authenticity key generation with client-side preference file management to create a robust, personalized authentication system.” Id. ¶ 13. In slightly simpler terms, the ’863 Patent envisions a “personalized verification mechanism” where the webpage’s server displays a personalized authenticity stamp that the user knows to expect when visiting the webpage she intended to visit. See id. ¶ 17 (citing ’863 Patent at 8:17–19).

The ’863 Patent has 20 “claims,” or distinct inventions, that it covers. See ’863 Patent at 14:46 to 16:51. Only two of the ’863 Patent’s claims are mentioned in the Amended Complaint: Claim 9 and Claim 11. See Doc. 15, Am. Compl. ¶¶ 14, 16, 18–20, 22–23. Claim 9, which provides a method with eleven steps (labeled A–K below),1 reads: A method for authenticating at least one web page, the method comprising:

1 Mark this point in the opinion for easy future access; the labeled steps will come up repeatedly in the Analysis section below. [A] storing at least one authenticity stamp in a preferences file located in a file location;

[B] creating, by one or more designated servers, an authenticity key with information to locate the preferences file;

[C] receiving, at the one or more designated servers, a request from a client computer for the at least one web page;

[D] creating, by the one of more designated servers, formatted data corresponding to the requested at least one web page; and

[E] receiving, at the one or more designated servers, a request for the authenticity key used to locate the preferences file;

[F] sending, by the one or more designated servers, the formatted data to the client computer;

[G] providing, by the one or more designated servers, the authenticity key for processing to determine the file location of the preferences file;

[H] processing the authenticity key to determine the file location of the preferences file;

[I] locating the preferences file in the file location;

[J] retrieving the at least one authenticity stamp from the preferences file; and

[K] enabling the at least one authenticity stamp to be displayed with a representation of the formatted data on a display of the client computer.

’863 Patent at 15:24–51. Claim 11 depends on the method of Claim 9 and adds: “The method of Claim 9, wherein the file location is at least one of a random directory and a location not readily known in order to obscure the location of the preferences file.” Id. at 16:3–6. Authentixx attached to its Amended Complaint a chart with Claim 9’s language, annotated screenshots from Pickleball’s website showing where certain claim terms were allegedly practiced, and some added description of how Pickleball’s website allegedly infringes Claim 9. See generally Doc. 15-2, Am. Compl. Ex. 2. The “authenticity stamp” on Pickleball’s website is allegedly a small image of the user. Id. at 2–3. For Step A, the “authenticity stamp” is stored “in a preferences file (e.g., user

profile file) located in a file location (e.g., location of the user image in [pickleball.com’s] server . . . ).” Id. at 2. Pickleball’s website, through its server, allegedly practices Step B by creating an “authenticity key (e.g., key related to the URL)”—which is visually represented as a portion of a URL string—“with information to locate the preferences file (e.g., user profile file).” Id. at 4–5. Steps C, D, and F allegedly happen when Pickleball’s website receives a request from a user for certain webpage content (e.g., a search for pickleball leagues), creates “formatted data . . . corresponding to the request[]” (e.g.,

information about pickleball leagues), and then displays that information to the user. See id. at 5–7, 9–10. Apparently at the same time, in Steps E, G, H, I, J and K, Pickleball’s website receives a request for the authenticity key, provides the authenticity key for processing, processes it to determine the location of the preferences/user file, locates the preferences file, retrieves the authenticity stamp therefrom, and then displays the authenticity stamp to the user on the same webpage with the formatted data. Id. at 8, 11–19. To summarize, the user sees two things at once on the webpage: the

generic information about pickleball that she wants and a small image of herself that verifies that she is on pickleball.com and not some spoof website like piclebaal.com. After Authentixx filed its original Complaint, Pickleball moved to dismiss on grounds that the ’863 Patent is ineligible for patent protection and that Authentixx failed to plausibly allege infringement. See generally Doc. 11, Mot. Dismiss. Authentixx amended its complaint by adding allegations to overcome Pickleball’s ineligibility argument. Contrast Doc. 15, Am. Compl. ¶¶ 9–24 (alleging details about the prior art and the ’863 Patent’s improvements thereon), with Doc. 1, Compl. (not containing such allegations). Pickleball’s second motion to dismiss is based on the same grounds as before: ineligibility and non-infringement. See generally Doc. 17, Mot. Dismiss. The Court considers the second motion to dismiss below.

II. LEGAL STANDARD Fifth Circuit law governs the procedural question of whether Authentixx stated a plausible patent infringement claim. See Disc Disease Sols. Inc. v. VGH Sols., Inc., 888 F.3d 1256, 1259 (Fed. Cir. 2018) (citation omitted).

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Authentixx LLC v. Pickleball OpCo LLC, Counsel Stack Legal Research, https://law.counselstack.com/opinion/authentixx-llc-v-pickleball-opco-llc-txnd-2026.