Triteq Lock & Security LLC v. Imbera USA LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Triteq Lock & Security, LLC (Illinois)
  • Defendant: Imbera USA, LLC (Texas)
  • Plaintiff’s Counsel: Friedman, Suder & Cooke
• Case Identification: 4:26-cv-08559, S.D. Tex., 09/30/2026
• Venue Allegations: Plaintiff alleges venue is proper because Defendant is a Texas LLC that maintains a regular and established place of business within the district, from which it operates its Food Service Division.
• Core Dispute: Plaintiff alleges that Defendant’s "Insight Health Lock" system, used on its commercial coolers and freezers, infringes four patents related to temperature-responsive locking mechanisms for unattended vending applications.
• Technical Context: The technology concerns automated electromechanical locks for refrigerated vending machines that secure access to perishable goods if temperature or power conditions suggest a risk of product spoilage, a critical function for unattended "micro-market" retail environments.
• Key Procedural History: The complaint alleges a prior business relationship in which Defendant was a customer of Plaintiff, purchasing and using Plaintiff's patented lock systems. Plaintiff alleges Defendant subsequently developed the accused "Insight Health Lock" as a direct replacement for Plaintiff's products with knowledge of the asserted patents, which is alleged to have started no later than April 22, 2020.

Case Timeline

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

• Patent Identification: U.S. Patent No. 10,612,833, titled "COOLER LOCK", issued on April 7, 2020.
• The Invention Explained:
  • Problem Addressed: In unattended retail settings, perishable food stored in refrigerated coolers is at risk of spoiling from events like power failure, equipment malfunction, or a door left ajar, creating a food safety hazard if consumers can still access the products Compl. ¶¶10-11
  • The Patented Solution: The patent discloses an access control system that automatically locks a cooler door to prevent access to potentially spoiled food ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, abstract). The system uses a controller that monitors conditions such as internal temperature and power status and triggers a lock if a "fault event" occurs, such as the temperature rising above a threshold for a set time or a loss of primary power ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, col. 4:5-31). A flowchart in the complaint, taken from the patent, illustrates the control logic, showing decision points for temperature, power loss, and service modes before a "Lock Cooler" command is issued Compl. ¶16 Compl. p. 7, FIG. 15 The system is designed to operate on both AC and battery backup power ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, col. 4:57-64).
  • Technical Importance: The invention provides an automated safety mechanism for the growing unattended retail and "micro-market" industry, where continuous manual oversight of individual coolers is impractical Compl. ¶¶9-10
• Key Claims at a Glance:
  • The complaint asserts at least independent claim 14 Compl. ¶66
  • Essential elements of claim 14 include:
    • A lock for a food storage vending cooler or freezer having a locking element on the door and an electronic lock mechanism on the cabinet.
    • Lock controller circuitry communicably linked to cooler controller circuitry.
    • At least one lock controller power source.
    • A secured unlocking implement independent from the cooler controller circuitry.
    • The lock controller circuitry is configured to permit unsecured access when the temperature is at or below 42°F.
    • The lock controller circuitry is further configured to restrict unsecured access upon a loss of power from the power source, independent of the temperature.
  • The complaint reserves the right to assert additional claims Compl. ¶72
• Patent Identification: U.S. Patent No. 11,668,514, titled "COOLER LOCK", issued on June 6, 2023.
• The Invention Explained:
  • Problem Addressed: As with the '833 Patent, the invention addresses the need to prevent consumer access to spoiled food in unattended refrigerated vending cabinets by monitoring for conditions indicative of spoilage Compl. ¶78
  • The Patented Solution: The '514 Patent describes a control system with distinct "normal operation" and "fault" modes ([’514](https://ai-lab.exparte.com/patent/11668514) Patent, col. 9:55-64). A key feature is that the controller actuates the lock only after a high-temperature condition has persisted for a defined period of "one or more minutes" ([’514](https://ai-lab.exparte.com/patent/11668514) Patent, col. 10:18-22). The system is also explicitly claimed as communicating the fault status or temperature over a local or wide area network ([’514](https://ai-lab.exparte.com/patent/11668514) Patent, col. 10:28-34). The specification further details logic to remain unlocked if the temperature, though elevated, is actively falling, which suggests a restocking event rather than a system failure ([’514](https://ai-lab.exparte.com/patent/11668514) Patent, col. 9:6-12).
  • Technical Importance: This refined control logic aims to reduce "nuisance lockouts" by better distinguishing between true fault conditions and normal operational events like restocking, enhancing usability in high-traffic micro-markets Compl. ¶79
• Key Claims at a Glance:
  • The complaint asserts at least independent claim 11 Compl. ¶80
  • Essential elements of claim 11 include:
    • A food storage vending cabinet access control system with a locking element, a locking mechanism, and a controller.
    • The controller operates in a "normal operation mode" and a "fault condition."
    • The controller is configured to detect an event, transition to the fault condition, and actuate the lock "after the temperature... exceeds and remains above the elevated air temperature limit for a period of one or more minutes."
    • An unlocking device to selectively unlock the mechanism.
    • The controller is further configured to communicate the fault condition or temperature to a local or wide area network.
  • The complaint reserves the right to assert additional claims Compl. ¶85
• Patent Identification: U.S. Patent No. 12,392,543, "COOLER LOCK", issued August 19, 2025 Compl. ¶89
• Technology Synopsis: This patent discloses an electromechanical lock system for a refrigerated vending cabinet that actuates a lock when the internal temperature exceeds a limit for a specified duration ([Compl. ¶92](https://ex:cit:19)). The claims describe a distributed architecture wherein a "first microcomputer" may be configured to communicate system parameters while a "second microcomputer" may cause actuation of the locking mechanism ([Compl. ¶92](https://ex:cit:19)).
• Asserted Claims: At least claim 54 is asserted Compl. ¶93
• Accused Features: The complaint alleges that the "Insight Health Lock" system, including its controller, sensors, and lock mechanism, infringes by operating based on temperature and time thresholds (`Compl. ¶¶42-43; Compl. ¶93).
• Patent Identification: U.S. Patent No. 12,235,034, "VENDING LOCK", issued February 25, 2025 Compl. ¶102
• Technology Synopsis: This patent describes an enclosure access control system operable to lock an enclosure during a power failure or fault event ([Compl. ¶104](https://ex:cit:23)). It details a locking mechanism on the enclosure body and a locking element on the door ([Compl. ¶104](https://ex:cit:23)). The system is powered by an AC source during normal operation, with a battery providing backup power so the controller can lock the door in response to a power failure ([Compl. ¶104](https://ex:cit:23)).
• Asserted Claims: At least claim 2 is asserted Compl. ¶105
• Accused Features: The "Insight Health Lock" system is accused of infringing, with the complaint highlighting its lock mechanism, controller, AC power connection, and backup battery that enables locking upon power loss (`Compl. ¶¶26; Compl. ¶40; Compl. ¶44; Compl. ¶105).

III. The Accused Instrumentality

• Product Identification: The accused instrumentalities are Defendant Imbera’s "Insight Health Lock" system and the commercial cooler and freezer merchandisers that incorporate it, such as the G319, VR12, and VFS24 models Compl. ¶25
• Functionality and Market Context:
  • The Accused Products are commercial refrigerators and freezers used in micro-markets Compl. ¶24 Compl. ¶27 The complaint includes an annotated image of the wireless controller board, identifying connections for power, temperature probes, and the door lock Compl. ¶38 Compl. p. 16
  • Functionally, the system uses a Softel CIR Wireless 2V1 controller to manage both refrigeration and a Southco electromechanical lock Compl. ¶29 Compl. ¶35 It monitors temperature and, if it exceeds a maximum threshold (TMAX) for a set period (e.g., 30 minutes for coolers), the controller sends a signal to lock the door Compl. ¶42 An image from an Insight Spec Sheet in the complaint details these operating parameters Compl. ¶28 Compl. p. 12
  • The system also locks automatically two minutes after a loss of primary AC power, using a 9V backup battery to power the lock transition Compl. ¶40 Compl. ¶44
  • The complaint alleges these products directly compete with Plaintiff’s products and that Imbera developed the accused system to replace the Triteq locks it previously purchased, allegedly with full knowledge of Triteq's patent rights Compl. ¶57 Compl. ¶60

IV. Analysis of Infringement Allegations

U.S. Patent No. 10,612,833 Infringement Allegations

U.S. Patent No. 11,668,514 Infringement Allegations

• Identified Points of Contention:
  • Scope Questions: Claim 14 of the '833 Patent recites separate "lock controller circuitry" and "cooler controller circuitry." The complaint alleges a single "Softel CIR Wireless 2V1 controller" performs both cooling control and lock command functions Compl. ¶35 An issue may be whether this single, integrated controller can satisfy the two-circuitry limitation, which is depicted in the patent's Figure 13 as two distinct microcomputers ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, FIG. 13).
  • Technical Questions: Claim 11 of the '514 Patent requires locking after an over-temperature condition persists for "one or more minutes." The complaint alleges the accused products lock after standard periods of 30 or 75 minutes Compl. ¶42 This raises the question of whether the much longer accused time periods fall within the scope of the claim language, or if they represent a technically distinct approach.

V. Key Claim Terms for Construction

• The Term: "lock controller circuitry... communicably linked to the cooler controller circuitry" ('833 Patent, Claim 14)

• Context and Importance: This term's construction is critical because the '833 Patent depicts a two-component architecture, while the complaint alleges infringement by a single, integrated controller. Defendant may argue that its single controller does not meet this limitation, making its interpretation central to the infringement analysis for this patent.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The specification discusses "controllers" in a general sense, which could support an argument that the functions, not the number of physical boxes, are what matters ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, col. 4:57). A party could argue that distinct software modules within a single processor constitute separate "circuitry."
  • Evidence for a Narrower Interpretation: Figure 13 of the patent explicitly illustrates a "cooler controller (50)" and a "lock controller (51)" as two separate boxes labeled "Microcomputer" connected by communication lines ([’833](https://ai-lab.exparte.com/patent/10612833) Patent, FIG. 13). This figure provides strong evidence that the inventor contemplated two physically or architecturally distinct units.

• The Term: "for a period of one or more minutes" ('514 Patent, Claim 11)

• Context and Importance: Practitioners may focus on this term because the accused products allegedly use much longer time delays (30 or 75 minutes) than the "one or more minutes" floor set by the claim Compl. ¶42 The dispute will likely center on whether this claim language is merely a floor or if it implies a temporal proximity that the accused products lack.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The plain meaning of "one or more" sets a minimum but no maximum, so any period greater than one minute would literally infringe. The specification provides an example of 15 minutes, which is greater than one, suggesting the term is not limited to short durations ([’514](https://ai-lab.exparte.com/patent/11668514) Patent, col. 6:41-45).
  • Evidence for a Narrower Interpretation: A party could argue that the context of food spoilage implies a reasonable time frame and that a 30- or 75-minute delay is a functionally different approach to risk management than what is enabled by the patent's disclosure. The term could be argued to mean a period just long enough to confirm a fault rather than a long, standardized hold time.

VI. Other Allegations

• Indirect Infringement: The complaint alleges inducement of infringement, stating that Imbera provides its customers with user manuals, product specifications, and online instructions that demonstrate how to use the Accused Products in an infringing manner Compl. ¶52 Compl. ¶69 It also alleges contributory infringement, asserting the products are especially designed for this infringing use and have no substantial non-infringing use Compl. ¶71
• Willful Infringement: The complaint alleges willful infringement based on Defendant's purported actual knowledge of the patents. This knowledge is allegedly derived from the parties' prior business relationship, Triteq's virtual patent marking, and a specific press release dated April 22, 2020 that identified the '833 Patent (Compl. ¶¶54; Compl. ¶58-59). The complaint characterizes Imbera’s continued infringement in the face of this knowledge as objectively reckless Compl. ¶74

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

• A core issue will be one of architectural scope: can the "lock controller circuitry" and "cooler controller circuitry" limitation in the '833 patent, which the specification illustrates as two distinct microcomputers, be construed to cover the accused system's single, integrated controller that performs both functions?
• A key evidentiary question will be one of temporal construction: does the '514 patent's requirement to lock after an over-temperature condition persists for "one or more minutes" read on the accused system's standard delays of 30 and 75 minutes, or do these longer periods represent a non-infringing design choice?
• A significant question for damages will be willfulness: given the complaint's allegations of a prior customer relationship, direct competition, and specific pre-suit knowledge of the patents, the court will need to determine whether Defendant's development and sale of a replacement system constituted objectively reckless conduct warranting enhanced damages.