Fall Line Patents LLC v. Macys Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Fall Line Patents, LLC (Oklahoma)
  • Defendant: Macy's, Inc. (Delaware) and Macy's Retail Holdings, LLC (Ohio)
  • Plaintiff's Counsel: Antonelli, Harrington & Thompson LLP
• Case Identification: 5:26-cv-00084, E.D. Tex., 06/30/2026
• Venue Allegations: Plaintiff alleges venue is proper in the Eastern District of Texas because Defendant transacts business in the district, has committed acts of infringement there, and maintains a "regular and established place of business" at a physical store location in Frisco, Texas.
• Core Dispute: Plaintiff alleges that Defendant's Macy's Mobile App, in conjunction with its servers, infringes a patent related to methods for managing and collecting data from remote computing devices.
• Technical Context: The technology addresses challenges in developing software for early-2000s era handheld computers, specifically by enabling a single application to run on diverse hardware and to function despite intermittent network connectivity.
• Key Procedural History: The asserted patent, U.S. Patent No. 9,454,748, has an extensive post-issuance history. The complaint notes that in prior litigation, the patent survived a motion to dismiss on patent eligibility grounds and was the subject of a summary judgment order of validity under 35 U.S.C. § 101. Furthermore, the patent has survived two inter partes review (IPR) proceedings. In IPR2019-00610, the asserted Claim 7 was found patentable, while several other claims were canceled. In IPR2018-00043, additional claims were canceled. The survival of the asserted claim through an IPR challenge may strengthen its presumption of validity.

Case Timeline

Date	Event
2002-08-19	Priority Date for U.S. Patent No. 9,454,748
2016-09-27	U.S. Patent No. 9,454,748 Issued
2017-10-06	IPR2018-00043 Filed against the '748 Patent
2019-01-22	IPR2019-00610 Filed against the '748 Patent
2022-12-19	Certificate for IPR2019-00610 Issued (Claim 7 patentable)
2023-08-22	Certificate for IPR2018-00043 Issued (claims canceled)
2026-06-30	Complaint Filed

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 9,454,748 - "System and Method for Data Management"

• Issued: September 27, 2016

The Invention Explained

• Problem Addressed: The patent's background section describes numerous technical hurdles facing developers of applications for remote handheld computers in the early 2000s Compl. ¶23 These included software incompatibility across different device platforms, which required custom development for each device type; the difficulty of sharing data between different devices; the need to recompile and reinstall an entire program to make a single change; and unreliable or low-bandwidth network connections in the field (Compl. ¶23; Compl. ¶24; Compl. ¶25, Compl. ¶¶col. 1:49-2:2; '748 Patent, Compl. ¶¶col. 3:7-10; '748 Patent, Compl. ¶¶col. 3:64-4:1).
• The Patented Solution: The invention proposes a system using "device-independent (or device-indifferent) tokens" to represent a "questionnaire" Compl. ¶26 A central server creates and "tokenizes" a questionnaire, which is then sent to remote devices '748 Patent, col. 13:20-29 This tokenized format allows the same application logic to be executed on different types of handheld devices without needing device-specific compilation '748 Patent, col. 4:63-5:2 The system is also designed for "loosely networked" environments, where it stores collected data locally on the device if no network is present and transmits it later when a connection becomes available '748 Patent, col. 5:7-12
• Technical Importance: The patented method aimed to provide a cross-platform solution for mobile data collection that was resilient to network interruptions, addressing key limitations that made field data gathering inefficient and costly Compl. ¶8 Compl. ¶24

Key Claims at a Glance

• The complaint asserts independent Claim 7 of the '748 Patent Compl. ¶12
• The essential elements of Claim 7 are:
  • A method for collecting survey data comprising the steps of:
  • (a) creating a questionnaire at a central computer;
  • (b) tokenizing said questionnaire, wherein said tokenizing is performed by said central computer and thereby producing a plurality of device independent tokens representing said questionnaire;
  • (c) transmitting said plurality of tokens from said central computer to a remote computing device;
  • (d) executing said plurality of tokens on said remote computing device to collect at least one response from a user; and
  • (e) transmitting said at least one response to said central computer.

III. The Accused Instrumentality

Product Identification

The "Macy's mobile app" operating "in conjunction with Macy's servers" Compl. ¶11

Functionality and Market Context

The complaint alleges that the accused system is used to "create and execute a location-specific questionnaire to collect responses from users" Compl. ¶11 The complaint does not provide further technical details on the functionality or architecture of the Macy's Mobile App. The allegations regarding venue suggest the app is used, at least in part, to direct customers to physical Macy's store locations Compl. ¶6

No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

The complaint makes a general allegation of infringement without providing a detailed element-by-element mapping. The following chart summarizes the infringement theory as can be inferred from the complaint's allegations.

'748 Patent Infringement Allegations

Claim Element (from Independent Claim 7)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
(a) creating a questionnaire at a central computer;	Macy's, using its servers, creates a "location-specific questionnaire."	¶11	col. 13:20-22
(b) tokenizing said questionnaire, wherein said tokenizing is performed by said central computer and thereby producing a plurality of device independent tokens representing said questionnaire;	Macy's servers allegedly convert the questionnaire into a device-independent format for distribution to mobile apps.	¶11	col. 13:23-26
(c) transmitting said plurality of tokens from said central computer to a remote computing device;	The questionnaire is transmitted from Macy's servers to a user's device running the Macy's Mobile App.	¶11	col. 13:27-29
(d) executing said plurality of tokens on said remote computing device to collect at least one response from a user;	The Macy's Mobile App executes the questionnaire and collects responses from the user.	¶11	col. 13:30-33
(e) transmitting said at least one response to said central computer.	The user's responses are transmitted from the mobile app back to Macy's servers.	¶11	col. 13:34-36

Identified Points of Contention

• Technical Questions: A central question is whether the Macy's app architecture actually performs "tokenizing" as claimed. The complaint offers no facts to support this allegation. The defense may argue that the app uses modern cross-platform development frameworks (e.g., web views, React Native, etc.) that do not operate in the manner described by the patent and do not meet the "tokenizing" or "device independent tokens" limitations.
• Scope Questions: The dispute may turn on the definition of "questionnaire." Does any set of prompts within a retail mobile application constitute a "questionnaire" as contemplated by the patent, which provides detailed examples of structured surveys (e.g., a "mystery shopper" scenario) '748 Patent, col. 10:40-11:26?

V. Key Claim Terms for Construction

• The Term: "tokenizing" / "device independent tokens"

• Context and Importance: These related terms are the technical core of Claim 7. The interpretation of what constitutes a "token" and the act of "tokenizing" will be critical to determining infringement. Practitioners may focus on this term because its scope will determine whether the claim reads on modern software development practices or is limited to the specific architecture described in the patent.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The specification introduces the concept in relation to "an intermediate language... such as i-code or tokens" '748 Patent, col. 2:15-18 Plaintiff may argue this suggests "tokens" should be construed broadly as any intermediate, device-agnostic representation of application logic and data structure.
  • Evidence for a Narrower Interpretation: The patent describes a system where a specific run-time package or operating system on the device is designed to "execute the compiled i-code or tokens" '748 Patent, col. 2:18-22 Defendant may argue that the claims require this specific architectural relationship between the tokens and a dedicated execution engine on the client device, rather than any generic cross-platform technology.

• The Term: "questionnaire"

• Context and Importance: Infringement is predicated on the accused system creating and executing a "location-specific questionnaire" Compl. ¶11 Whether the accused app features meet this definition will be a key point of dispute.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The patent states that programs can be created "by simply entering questions and providing response specification, in the form of a questionnaire" '748 Patent, col. 5:34-37 This could support reading the term on any series of prompts designed to elicit user input.
  • Evidence for a Narrower Interpretation: The specification provides a highly detailed "mystery shopper" example that includes multiple timers, specific event triggers, and branching logic, describing a structured survey instrument '748 Patent, col. 10:40-11:43 Defendant could argue this detailed embodiment limits the term "questionnaire" to similarly structured, formal data-collection forms.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement. Inducement is based on allegations that Macy's provides the app and directs or advises customers on how to use it in an infringing manner Compl. ¶16 Contributory infringement is based on allegations that the accused products contain "special features" with no substantial non-infringing use that are a material part of the invention Compl. ¶17
• Willful Infringement: Plaintiff alleges willfulness based on Defendant's knowledge of the '748 Patent as of the filing of the complaint Compl. ¶18 The complaint further alleges that Defendant has a "policy or practice of not reviewing the patents of others" and was "willfully blind" to Plaintiff's patent rights, and that its infringement is "objectively reckless" Compl. ¶19 Compl. ¶20

VII. Analyst's Conclusion: Key Questions for the Case

• A primary issue will be one of technical implementation: does the architecture of the Macy's Mobile App and its backend servers in fact perform the "tokenizing" of a "questionnaire" into "device independent tokens" as required by Claim 7? The complaint's lack of factual detail on this point makes it a central evidentiary question for discovery and expert testimony.
• A second dispositive question will be one of claim construction: can the term "device independent tokens," rooted in the patent's description of early 2000s intermediate code, be construed to cover the methods used by modern cross-platform mobile application frameworks? The outcome of this definitional dispute will likely determine the scope of the claim and the viability of the infringement case.
• A third question concerns the impact of the patent's litigation history: how will the prosecution history of the two IPRs, which resulted in the cancellation of numerous claims but confirmed the patentability of asserted Claim 7, shape the parties' arguments? While the patent's validity is strengthened, the arguments made during those proceedings could be used to narrow the interpretation of the surviving claim's scope.