DCT
1:26-cv-21257
Asylon Inc v. Hextronics LLC
Key Events
Complaint
Table of Contents
complaint Intelligence
I. Executive Summary and Procedural Information
- Parties & Counsel:
- Plaintiff: Asylon, Inc. (Delaware)
- Defendant: Hextronics, LLC (Florida)
- Plaintiff’s Counsel: Thompson Hine LLP
- Case Identification: 1:26-cv-21257, S.D. Fla., 02/25/2026
- Venue Allegations: Venue is alleged to be proper in the Southern District of Florida because Defendant Hextronics has its principal place of business within the district.
- Core Dispute: Plaintiff alleges that Defendant’s "drone-in-a-box" systems infringe two patents related to methods for autonomously landing an unmanned aerial vehicle (UAV) and swapping its power supply.
- Technical Context: Automated drone docking stations that can recharge or replace batteries are a critical technology for enabling persistent, autonomous drone operations for applications such as security, logistics, and infrastructure inspection.
- Key Procedural History: The complaint details extensive pre-suit communications, including an initial notice letter in January 2024, a subsequent letter in August 2025 identifying specific claims, a claims-focused meeting in October 2025, and follow-up licensing discussions. The complaint also notes Defendant’s pre-suit correspondence, which contended non-infringement based on asserted operational differences, such as the use of a "moving landing pad."
Case Timeline
| Date | Event |
|---|---|
| 2015-10-05 | Priority Date for ’859 and ’403 Patents |
| 2022-05-03 | U.S. Patent No. 11,318,859 Issued |
| 2024-01-23 | Asylon sends first notice letter to Hextronics |
| 2024-07-09 | U.S. Patent No. 12,030,403 Issued |
| 2025-08-18 | Asylon sends second notice letter identifying specific claims |
| 2026-02-25 | Complaint Filed |
II. Technology and Patent(s)-in-Suit Analysis
U.S. Patent No. 11,318,859 - "Methods for Reconfigurable Power Exchange for Multiple UAV Types," issued May 3, 2022
The Invention Explained
- Problem Addressed: The patent’s background section identifies that the primary limitation for commercial UAVs is battery technology, which restricts flight times to around 30 minutes and requires manual exchange of power systems, hindering fully autonomous and widespread deployment (’859 Patent, col. 1:16-34).
- The Patented Solution: The invention is a "Reconfigurable Power Station" (RPS) that automates the entire UAV power-swapping process (’859 Patent, col. 2:36-39). The system uses markers on a landing zone to guide an incoming UAV, employs a mechanical "swapping mechanism" to remove a depleted power cartridge (termed a "Swap Cartridge" or SC), retrieves a fully energized SC from a modular power bay, and installs the new SC into the UAV before clearing it for its next mission (’859 Patent, abstract; ’859 Patent, col. 2:4-16).
- Technical Importance: The patented method aims to solve the key logistical bottleneck for persistent drone operations, enabling extended flight range and duration without direct human intervention (’859 Patent, col. 1:30-34).
Key Claims at a Glance
- The complaint asserts independent claims 1 and 11 (’859 Patent, col. 12:26-56; ’859 Patent, col. 13:16-41).
- Essential Elements of Independent Claim 1:
- transmitting one or more signals to a UAV via markers or emitters when the UAV is in proximity to a landing zone on a reconfigurable power station (RPS);
- determining an orientation of the UAV relative to the landing zone after the UAV has landed;
- removing a first swap cartridge from the UAV via a swapping adaptor positionable upon a vertical elevator system;
- obtaining a second swap cartridge from one or more symmetrically aligned receiving bays and lifting it into alignment with the UAV;
- advancing the second swap cartridge along the swapping adaptor such that it is transferred into the housing on the UAV; and
- transmitting a clearance signal for take-off to the UAV upon completion of a preflight check.
- Essential Elements of Independent Claim 11:
- receiving a UAV upon a landing zone located on a housing of a power station;
- removing a first cartridge from the UAV via a swapping mechanism on a vertical elevator system and vertically moving it into a first receiving bay;
- obtaining a second cartridge from a second receiving bay and lifting it into alignment with the UAV, wherein the receiving bays are aligned symmetrically;
- advancing the second cartridge via the vertical elevator system such that it is transferred onto the housing on the UAV; and
- clearing the UAV for take-off from the power station.
- The complaint notes that its infringement allegations are not limited to these claims, which suggests the right to assert dependent claims is preserved (Compl. ¶27).
U.S. Patent No. 12,030,403 - "Methods for Reconfigurable Power Exchange for Multiple UAV Types," issued July 9, 2024
The Invention Explained
- Problem Addressed: The patent identifies the same technical problem as its parent ’859 Patent: limited UAV flight time due to battery constraints and the need for manual power source exchanges (’403 Patent, col. 1:18-34).
- The Patented Solution: The invention describes a functionally identical Reconfigurable Power Station (RPS) that automates UAV landing and power cartridge swapping (’403 Patent, col. 2:38-39). It uses a landing zone with markers, a vertical elevator-based swapping mechanism, and modular bays to exchange depleted power cartridges for fresh ones, enabling continuous operation (’403 Patent, abstract; ’403 Patent, col. 2:4-18).
- Technical Importance: This automated solution is presented as the key to unlocking the commercial realization and widespread use of UAVs by overcoming their primary operational limitation (’403 Patent, col. 1:30-34).
Key Claims at a Glance
- The complaint asserts independent claims 1 and 11 (’403 Patent, col. 12:28-58; ’403 Patent, col. 13:11-35).
- Essential Elements of Independent Claim 1:
- transmitting one or more signals to a UAV via markers or emitters when the UAV is in proximity to a landing zone on an RPS;
- receiving the UAV upon the landing zone;
- removing a first swap cartridge from the UAV via a swapping adaptor on a vertical elevator system;
- obtaining a second swap cartridge from one or more symmetrically aligned receiving bays and lifting it into alignment with the UAV;
- advancing the second swap cartridge along the swapping adaptor into the housing on the UAV; and
- transmitting a clearance signal for take-off upon completion of a preflight check.
- Essential Elements of Independent Claim 11:
- receiving a UAV upon a landing zone located on a housing of a power station;
- removing a first cartridge from the UAV via a swapping mechanism on a vertical elevator system and moving it into a first receiving bay;
- obtaining a second cartridge from a second receiving bay and lifting it into alignment with the UAV, with the receiving bays aligned symmetrically; and
- advancing the second cartridge via the vertical elevator system such that it is transferred onto the housing on the UAV.
- The complaint implies that the right to assert additional claims is preserved (Compl. ¶60).
III. The Accused Instrumentality
- Product Identification: The accused product is the "Hextronics Universal CS" product, also referred to as a "drone-in-a-box" system (Compl. ¶23).
- Functionality and Market Context:
- The complaint alleges the Accused Product is an automated system for servicing drones (Compl. ¶23). It includes a landing zone with visual markers that enables "precise autonomous landing" (Compl. ¶30). An annotated screenshot provided in the complaint shows the mechanical "Battery-Swapping Mechanism" removing a "First-Swap Cartridge" from a landed drone (Compl. ¶32, p. 11).
- The system allegedly uses a "vertical elevator system" to first remove a depleted battery from the UAV and lower it into one of up to four charging slots, and then to lift a charged battery from the "symmetrically aligned" receiving bays for installation into the UAV (Compl. ¶¶32-33). An image from a product guide shows these symmetrically aligned battery bays (Compl. ¶33, p. 12).
- The system is also alleged to perform "post flight checks" after landing and "preflight checks" before transmitting a clearance signal for takeoff (Compl. ¶31; Compl. ¶35). A screenshot from a Hextronics video shows a telemetry dashboard used for these post-flight checks (Compl. ¶31, p. 10).
IV. Analysis of Infringement Allegations
- ’859 Patent Infringement Allegations
| Claim Element (from Independent Claim 1) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| transmitting one or more signals to a UAV via one or more markers or emitters when the UAV is in proximity to a landing zone located on a reconfigurable power station (RPS) | The Accused Product provides a landing zone with markers that enables precise autonomous landing. | ¶30 | col. 2:38-45 |
| determining an orientation of the UAV relative to the landing zone after the UAV has landed | The Accused Product performs "post-flight checks to ensure that the UAV has arrived safely on the landing zone." | ¶31 | col. 2:45-47 |
| removing a first swap cartridge from the UAV via a swapping adaptor which is positionable upon a vertical elevator system from within the RPS and lowering the first swap cartridge into the RPS | The Accused Product includes a battery-swapping mechanism with a vertical elevator system that removes and lowers the first battery cartridge. | ¶32 | col. 2:47-50 |
| obtaining a second swap cartridge ... from one or more receiving bays ... wherein each of the one or more receiving bays are aligned symmetrically relative to one another in a fixed position relative to the RPS | The Accused Product comprises up to four batteries in receiving bays that are alleged to be symmetrically aligned. | ¶33 | col. 12:41-50 |
| advancing the second swap cartridge along the swapping adaptor such that the second swap cartridge is transferred into the housing on the UAV | The Accused Product uses its battery-swapping mechanism with a vertical elevator system to advance the second cartridge into the UAV. | ¶34 | col. 12:49-52 |
| transmitting a clearance signal for take-off to the UAV via the RPS upon completion of a preflight check of the UAV | The Accused Product performs preflight checks (e.g., on cameras, propellers, UAV body) before transmitting a clearance signal for take-off. | ¶35 | col. 12:53-56 |
- ’403 Patent Infringement Allegations
| Claim Element (from Independent Claim 1) | Alleged Infringing Functionality | Complaint Citation | Patent Citation |
|---|---|---|---|
| transmitting one or more signals to a UAV via one or more markers or emitters when the UAV is in proximity to a landing zone located on a reconfigurable power station (RPS) | The Accused Product transmits signals via markers on its landing zone to enable an "autonomous landing algorithm." | ¶63 | col. 2:40-47 |
| receiving the UAV upon the landing zone | The Accused Product receives the UAV upon its landing zone. | ¶64 | col. 12:15-16 |
| removing a first swap cartridge from the UAV via a swapping adaptor which is positionable upon a vertical elevator system from within the RPS and lowering the first swap cartridge into the RPS | The Accused Product uses a swapping adaptor on a vertical elevator system to remove and lower the first battery cartridge into the power station. | ¶65 | col. 2:47-50 |
| obtaining a second swap cartridge ... from one or more receiving bays ... wherein each of the one or more receiving bays are aligned symmetrically relative to one another in a fixed position relative to the RPS | The Accused Product obtains a second battery from receiving bays alleged to be symmetrically aligned. | ¶66 | col. 12:43-52 |
| advancing the second swap cartridge along the swapping adaptor such that the second swap cartridge is transferred into the housing on the UAV | The Accused Product uses its swapping mechanism and vertical elevator to transfer the second battery into the UAV. | ¶67 | col. 12:51-54 |
| transmitting a clearance signal for take-off to the UAV via the RPS upon completion of a preflight check of the UAV | The Accused Product performs preflight checks before transmitting a clearance signal for take-off. | ¶68 | col. 12:55-58 |
- Identified Points of Contention:
- Functional Scope Question: The complaint alleges that the accused product's "post-flight checks to ensure that the UAV has arrived safely" satisfies the ’859 Patent's requirement of "determining an orientation of the UAV relative to the landing zone" (Compl. ¶31). This raises the question of whether a general systems check is functionally equivalent to the specific geometric determination of "orientation" as required by the claim.
- Structural Scope Question: Defendant’s pre-suit non-infringement argument centered on its use of a "moving landing pad in which the aircraft lands within and then brought into the station" (Compl. ¶19; Compl. ¶58). This suggests a potential dispute over whether a system with a mobile landing platform separate from the main housing meets the claim limitation of a "landing zone located on" the power station.
V. Key Claim Terms for Construction
The Term: "determining an orientation of the UAV relative to the landing zone" (’859 Patent, Claim 1)
- Context and Importance: This term's construction may be pivotal for infringement of the ’859 Patent's Claim 1. Plaintiff equates this element with the accused product's "post flight checks" (Compl. ¶31), which may be challenged as a general status verification rather than a specific measurement of geometric orientation.
- Intrinsic Evidence for Interpretation:
- Evidence for a Broader Interpretation: The specification states the system will "determin[e] an orientation of the UAV relative to the landing zone after the UAV has landed" without specifying the exact method, which could support a broader functional interpretation that includes any check confirming the UAV is correctly positioned for swapping (’859 Patent, col. 2:45-47).
- Evidence for a Narrower Interpretation: The word "orientation" itself carries a strong geometric connotation. Dependent claim 7 specifies "optically determining the orientation," which implies that "orientation" is a physical property to be measured (’859 Patent, col. 13:1-3). The technical need to precisely align a mechanical swapping mechanism with the UAV may support a narrower construction requiring a specific positional or angular determination.
The Term: "landing zone located on a ... power station" (’859 Patent, Claim 1)
- Context and Importance: This term is central to Defendant's pre-suit non-infringement defense, which describes the accused product as using a "moving landing pad" that brings the drone into the station (Compl. ¶19). The dispute will likely focus on whether the claimed "landing zone" must be a fixed, integral part of the station's housing.
- Intrinsic Evidence for Interpretation:
- Evidence for a Broader Interpretation: The patent describes the overall system as a "Reconfigurable Power System (RPS) ... contained within a housing or an environment enclosure" (’859 Patent, col. 4:49-53). This could be argued to encompass all components of the automated solution, including a mobile landing platform, as part of the overall "station."
- Evidence for a Narrower Interpretation: The plain meaning of "located on" suggests a direct physical placement. The patent's own Figure 1A depicts the UAV 108 landing directly on top of the main housing structure 104, which contains the swapping mechanism, suggesting a unitary design (’859 Patent, Fig. 1A). This could support a narrower construction that excludes systems where landing and servicing occur on physically separate, mobile components.
VI. Other Allegations
- Indirect Infringement: The complaint includes counts for induced infringement of both patents, alleging Hextronics knew of the patents and specifically intended for its customers to infringe (Compl. ¶¶46-55; Compl. ¶¶78-86). The allegations are supported by references to Hextronics' "Quick Start Guides," "user manuals," "training videos, webinars, and online tutorials" that allegedly instruct users on how to perform the claimed methods (Compl. ¶49; Compl. ¶81).
- Willful Infringement: The complaint alleges willful infringement based on pre-suit knowledge. It provides a detailed timeline of notice, beginning with a letter on January 23, 2024, followed by a letter identifying specific claims on August 18, 2025, a claims-focused meeting, and licensing discussions (Compl. ¶¶15-21). Plaintiff asserts that Defendant's continued infringement despite this extensive notice was "deliberate and malicious" (Compl. ¶43; Compl. ¶75).
VII. Analyst’s Conclusion: Key Questions for the Case
- A core issue will be one of functional scope: Does the accused product’s general "post-flight checks" system perform the specific function of "determining an orientation" as required by claim 1 of the ’859 Patent, or is there a fundamental mismatch between a software-based safety check and a geometric position measurement?
- A second key issue will be one of structural scope: Can the claim term "landing zone located on a... power station" be construed to read on the accused product's alleged "moving landing pad" architecture, or do the patent's claims and figures require a unitary structure where landing and battery swapping occur on the same fixed platform?
- A significant evidentiary question regarding damages will be one of willfulness: Given the detailed history of pre-suit notice and the defendant's articulated non-infringement position, what evidence will be required to establish that Hextronics acted with the "objective recklessness" necessary to support a finding of willful infringement?
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