Context Directions LLC v. Speedway Auto Sales LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Context Directions LLC (Delaware)
  • Defendant: Speedway Auto Sales, LLC (Florida)
  • Plaintiff's Counsel: BEUSSE SANKS, PLLC
• Case Identification: 8:26-cv-01844, M.D. Fla., 06/24/2026
• Venue Allegations: Venue is asserted based on the defendant having an established place of business in the district and having committed alleged acts of patent infringement there.
• Core Dispute: Plaintiff alleges that Defendant's sale of used vehicles containing certain mobile technology infringes two patents related to methods for a mobile device to efficiently detect its context, such as being in a moving vehicle.
• Technical Context: The technology concerns power-saving techniques for mobile devices that use a hierarchy of sensors to determine the user's environment and activity, which is significant for battery-dependent devices.
• Key Procedural History: The patents-in-suit descend from a common priority application. U.S. Patent No. 10,142,791 was the subject of an ex parte reexamination, which concluded with a certificate issued on November 5, 2021, confirming the patentability of all examined claims, including asserted claim 1.

Case Timeline

Date	Event
2012-02-17	Priority Date for '564 and '791 Patents
2017-10-31	U.S. Patent No. 9,807,564 Issues
2018-11-27	U.S. Patent No. 10,142,791 Issues
2021-11-05	Reexamination Certificate for U.S. Patent No. 10,142,791 Issues
2025-01-01	Approximate Launch Year for Accused 2025 Model Vehicles
2026-06-24	Complaint Filing Date

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

U.S. Patent No. 9,807,564 - "Method for Detecting Context of a Mobile Device and a Mobile Device with a Context Detection Module"

• Patent Identification: U.S. Patent No. 9,807,564, "Method for Detecting Context of a Mobile Device and a Mobile Device with a Context Detection Module," issued October 31, 2017.

The Invention Explained

• Problem Addressed: The patent addresses the problem that prior methods for a mobile device to determine its context (e.g., being in a moving vehicle) were inefficient, forcing a compromise between high power consumption (using GPS continuously) and slow detection speed (using cell tower signals) Compl. ¶11
• The Patented Solution: The invention proposes a power-efficient method using a hierarchical system of sensor groups. A low-power, low-accuracy sensor group is used for initial context screening. If it detects a potential context, it activates a higher-power, higher-accuracy sensor group for confirmation. This conserves battery life by engaging energy-intensive sensors only when necessary '564 Patent, abstract '564 Patent, col. 9:41-54 The system can also adapt the configuration of the lower-level classifiers based on results from the higher-level ones, allowing it to "learn" over time '564 Patent, col. 4:15-19
• Technical Importance: This hierarchical, adaptive approach to sensor management allows for more timely context detection than low-power methods without the continuous battery drain of high-power methods.

Key Claims at a Glance

• The complaint asserts independent claims 1 and 23 Compl. ¶19
• Independent Claim 1 (A mobile device) requires, in essence:
  • A plurality of sensors and a plurality of sensor groups arranged in a hierarchy.
  • A plurality of classifiers, each assigned to a sensor group to evaluate device context.
  • A context detection module configured to:
    • Activate classification using a classifier for a first, lowest-level sensor group.
    • Activate classification using a classifier for a second, higher-level sensor group after a result from the first.
    • Adapt the configuration of the first classifier based on a result from the second classifier.
• Independent Claim 23 (A method) requires, in essence:
  • Assigning a plurality of sensors to a plurality of sensor groups arranged in a hierarchy.
  • Activating a classification by a classifier for a second sensor group after a result from a first, lower-level sensor group.
  • Adapting the configuration of the first group's classifier based on the result from the second group's classifier.

U.S. Patent No. 10,142,791 - "Method and System for Context Awareness of a Mobile Device"

• Patent Identification: U.S. Patent No. 10,142,791, "Method and System for Context Awareness of a Mobile Device," issued November 27, 2018.

The Invention Explained

• Problem Addressed: The complaint describes the same technical problem as for the '564 Patent: the trade-off between power consumption and detection delay in context-aware mobile devices Compl. ¶16
• The Patented Solution: Sharing a specification with the '564 Patent, the '791 Patent discloses the same solution of using hierarchically ordered groups of sensors and adaptive classifiers to efficiently detect a mobile device's context '791 Patent, abstract '791 Patent, col. 7:56-8:14 The system progresses from low-power to high-power sensor groups to confirm a context, thereby saving energy '791 Patent, Fig. 3
• Technical Importance: This technology provides a framework for creating more responsive yet energy-efficient context-aware applications on battery-powered devices.

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶24
• Independent Claim 1 (A mobile device) requires, in essence:
  • A plurality of sensors and sensor groups arranged in a hierarchy.
  • A plurality of classifiers, each assigned to a sensor group to evaluate contexts.
  • The mobile device is configured to:
    • Activate classification by a first classifier (lowest level).
    • Activate classification by a second classifier (higher level) after a result from the first.
    • Adapt the configuration of the first classifier based on the result from the second classifier.

III. The Accused Instrumentality

• Product Identification: The complaint identifies the accused products as "at least the following used vehicles: 2025 Nissan Sentra SV CVT and 2025 Toyota Corolla LE CVT" Compl. ¶19 Compl. ¶24
• Functionality and Market Context: The complaint alleges that the "sale, use, or offer of sale" of these vehicles constitutes infringement Compl. ¶19 It does not, however, specify which system or component within the vehicles (e.g., infotainment system, telematics unit, a connected-car feature) is the "mobile device" that allegedly practices the patented method. The complaint provides no technical description of the accused functionality, instead referring to non-provided claim chart exhibits Compl. ¶19 Compl. ¶25 No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

The complaint alleges infringement but provides no specific factual allegations or narrative theory in the body of the complaint, instead referring to external exhibits not provided with the filing. The following table summarizes the allegations at a high level by mapping claim elements to the complaint's blanket assertion of infringement against the accused vehicles.

'564 Patent Infringement Allegations

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
A mobile device, comprising: a plurality of sensors and a plurality of sensor groups, wherein each of the sensor groups is assigned at least one of the sensors, and wherein the sensor groups are arranged according to a hierarchy;	The complaint alleges, without specific detail, that the Accused Products are or contain a "mobile device" with the claimed hierarchical sensor group structure.	¶19	col. 4:1-9
a plurality of classifiers, wherein each classifier is assigned to a sensor group, and wherein each classifier is configured to evaluate one or more contexts of the mobile device...	The complaint alleges the Accused Products contain the claimed classifiers for evaluating device context but does not identify them.	¶19	col. 4:3-9
a context detection module configured to: activate a classification by a classifier assigned to a first sensor group... wherein the first sensor group is at a lowest level in the hierarchy;	The complaint alleges the Accused Products perform this function but provides no details on the module or the activation process.	¶19	col. 14:56-59
activate a classification by a classifier assigned to a second sensor group to evaluate the first context of the mobile device after a result of the classification by the classifier assigned to the first sensor group;	The complaint alleges the Accused Products perform this hierarchical activation but does not describe how.	¶19	col. 14:60-64
and adapt a configuration of the classifier assigned to the first sensor group based, at least in part, on a result of the classification by the classifier assigned to the second sensor group.	The complaint alleges this adaptive "learning" function exists in the Accused Products but offers no supporting facts.	¶19	col. 14:65-67

• Identified Points of Contention:
  • Scope Question: A central question will be whether an integrated automotive system within the accused vehicles qualifies as a "mobile device" as contemplated by the patent. The specification describes exemplary mobile devices as phones, laptops, PDAs, and watches '564 Patent, col. 1:30-34, raising the question of whether the term's scope can extend to a vehicle component.
  • Technical Question: The complaint's lack of specificity raises the fundamental evidentiary question of what proof Plaintiff has that the accused vehicles' systems perform the claimed hierarchical activation and adaptive configuration. The defense may argue that any power-saving features in the vehicles operate on a different, non-infringing principle.

V. Key Claim Terms for Construction

• The Term: "mobile device"

  • Context and Importance: This term is critical because the accused instrumentalities are vehicles, not conventional handheld devices. The patent's infringement theory depends on construing a component within the vehicle (e.g., an infotainment or telematics system) as a "mobile device." Practitioners may focus on this term to determine if the patent's scope, written with traditional mobile electronics in mind, can be read to cover integrated automotive systems.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The claims do not define "mobile device," which may support an argument for its plain and ordinary meaning, potentially encompassing any movable electronic device.
    • Evidence for a Narrower Interpretation: The specification provides a list of examples: "mobile phones, laptops, PDAs, tablets, watches, music players, satellite navigation devices, cameras" '564 Patent, col. 1:30-32 A defendant may argue this list limits the term's scope to personal, portable electronics, and not systems integrated into a vehicle chassis.

• The Term: "adapt a configuration of the classifier"

  • Context and Importance: This term is a key element of the claimed invention, representing the "learning" capability of the system. Proving infringement requires showing that the accused systems do more than just follow a fixed, static logic. Practitioners may focus on this term as it likely requires a deep technical analysis of the accused software and may be difficult for the plaintiff to evidence without discovery.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The patent describes adaptation as a mechanism where lower-level classifiers "learn" from higher-level ones, without requiring a specific algorithm '564 Patent, col. 11:6-11 This may support a broad interpretation covering various feedback mechanisms.
    • Evidence for a Narrower Interpretation: The patent provides a detailed example of adaptation using a "k nearest neighbours" algorithm and modifying sets of positive and negative patterns '564 Patent, col. 11:51-12:15 '564 Patent, Fig. 5 A defendant could argue this specific embodiment narrows the scope of "adapt" to require a similar pattern-matching and modification process.

VI. Other Allegations

• Indirect Infringement: The complaint makes a conclusory allegation of indirect infringement, stating Defendant "continues to advertise the Accused Products and the infringing aspects... to customers to explain their features and use" Compl. ¶20 Compl. ¶25 The complaint does not provide specific facts to support that a used car dealership has the requisite knowledge and intent to induce its customers to infringe.
• Willful Infringement: The complaint does not use the term "willful" but alleges that infringement continued with "full knowledge" after the filing of the complaint Compl. ¶20 Compl. ¶25 This allegation appears aimed at establishing a basis for post-suit enhanced damages.

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

1. Definitional Scope: A core issue will be whether the term "mobile device," as described in a specification focused on personal electronics like phones and watches, can be construed broadly enough to read on an integrated system within a 2025 model-year vehicle.
2. Evidentiary Sufficiency: A key question will be whether Plaintiff can produce evidence, beyond the bare allegations in the complaint, that the accused vehicle systems perform the specific, multi-step process of hierarchical sensor activation and, critically, the adaptive configuration of their classifiers as claimed by the patents.
3. Liability of a Reseller: The case raises a significant legal question regarding the liability of a downstream reseller. The court will need to consider whether the act of selling a used car by a local dealership constitutes an infringing "use" or "sale" of patented technology embedded deep within a complex product manufactured and designed by a third party.