Echo MAV, LLC v. Horizon31, LLC and Brad Stinson

District Court, E.D. Tennessee·Decided August 6, 2026·No. 3:25-cv-00401·Unknown

Opinion

UNITED STATES DISTRICT COURT EASTERN DISTRICT OF TENNESSEE

ECHO MAV, LLC, ) ) Plaintiff, ) ) v. ) No.: 3:25-CV-401-TAV-JEM ) HORIZON31, LLC, and ) BRAD STINSON, ) ) Defendants. )

MEMORANDUM OPINION AND ORDER

This civil matter is before the Court on defendants’ motion to dismiss [Doc. 13]. Plaintiff has responded in opposition [Doc. 16], and this matter is now ripe for the Court’s review. E.D. Tenn. L.R. 7.1(a). For the reasons explained below, the Court will GRANT in part and DENY in part the motion to dismiss [Doc. 13]. I. Background The complaint alleges that plaintiff Echo MAV, LLC (“Echo MAV”) is a technology development company focused on defense-oriented drone innovation and systems integration, including the design, prototyping, and commercialization of specialized hardware and software for military and tactical applications [Doc. 1 ¶ 6]. Defendant Brad Stinson is the founder and managing member of defendant Horizon31, LLC (“Horizon31”), a company that was previously engaged in the development of unmanned aerial systems and related technologies [Id. ¶ 7]. Plaintiff alleges that on or about February 23, 2023, it and Horizon31 entered into a negotiated Asset Purchase Agreement (“Purchase Agreement”) pursuant to which plaintiff acquired substantially all of Horizon31’s tangible and intangible assets, including certain intellectual property, operational systems, equipment, and business goodwill (“Purchased Assets”) [Id. ¶ 8]. Plaintiff paid Horizon31 $500,000 at closing and executed a Promissory

Note in the original principal amount of $1,500,000, which was secured by a Security Agreement executed March 10, 2023 [Id. ¶ 9]. The Security Agreement granted Horizon31 a security interest in “the tangible and intangible personal property acquired by Debtor, including general intangibles, goods, equipment, documents, contracts, and other miscellaneous property,” which plaintiff alleges referred to the Purchased Assets [Id. ¶ 10].

However, plaintiff alleges that this collateral description does not include any language or reference to Horizon31 or Stinson obtaining a security interest in “after-acquired property,” “newly developed intellectual property,” “derivative works,” “future revenue streams,” or any assets beyond the Purchased Assets [Id. ¶ 11]. Thereafter, plaintiff independently developed and launched a new generation of

drone products using proprietary systems and personnel who were not employed at Horizon31 [Id. ¶ 12]. Plaintiff alleges that these developments were funded solely by Echo MAV, without contribution or involvement from Stinson or Horizon31 [Id.]. Additionally, after the execution of the Purchase Agreement, Stinson served as Chief Technology Officer of Echo MAV, and, in this position, he was able to access Echo MAV’s systems, physical

locations, electronic databases, and proprietary information [Id. ¶ 13]. After closing, plaintiff allegedly discovered that certain representations concerning the state of Horizon31’s business, specifically, the maturity of its government contracting pipeline, completeness of manufacturing files, and viability of ongoing vendor relationships, were materially false or misleading [Id. ¶ 14]. Nonetheless, Echo MAV continued performing under the Purchase Agreement and Security Agreement including by making partial payments toward the secured debt and pursuing development of its business

operations in good faith [Id. ¶ 15]. On or about March 21, 2025, after Stinson ceased working as Echo MAV’s Chief Technology Officer, Stinson caused Horizon31 to initiate litigation against Echo MAV and William Knowles in the Knox County Circuit Court, which resulted in entry of an Agreed Judgment against Echo MAV and Knowles in the principal amount of $1,452,385.22 [Id.

¶ 16]. According to plaintiff, the Agreed Judgment reaffirmed Horizon31’s rights only pursuant to the Security Agreement and did not expand or modify the scope of collateral or confer additional enforcement rights to Stinson [Id. ¶ 17]. Nonetheless, Stinson, acting in his capacity as owner and manager of Horizon31 “began engaging in a pattern of aggressive and unauthorized self-help conduct in a wrongful

attempt to take control of Echo MAV’s current business operations, intellectual property, vendor accounts, and customer relationships” [Id. ¶ 18]. Specifically, in or around April 2025, Stinson began restricting Echo MAV’s access to its core internal systems, including disabling access to Slack communications, GitHub code repositories, and cloud-based vendor accounts used in the development and operation of Echo MAV’s product lines [Id.

¶ 19]. Further, in or around May 2025, Stinson resigned from his position at Echo MAV, but thereafter entered Echo MAV’s office premises without notice or permission [Id. ¶ 20]. Plaintiff alleges that Stinson deleted or disabled administrative user accounts tied to key engineering tools and refused to return credentials necessary for manufacturing relationships with CircuitHub and other suppliers [Id. ¶ 21]. Further, Stinson contacted military procurement officials affiliated with entities with whom Echo MAV had active proposals or relationships, attempted to redirect payments to Horizon31, and made

disparaging comments regarding Echo MAV’s leadership [Id. ¶ 22]. Plaintiff alleges that Stinson thereafter engaged in a targeted deletion of internal files and records critical to the Monark Drone development program, which resulted in the temporary shutdown of Echo MAV’s prototyping pipeline and required substantial resources to partially recover [Id. ¶ 23]. Plaintiff alleges that these actions “have caused immediate and continuing harm to

Echo MAV’s operations, including delays in deliverables to government partners, disruption of investor communications, reputational harm, and loss of goodwill with critical vendors” [Id. ¶ 24]. On May 23, 2025, Echo MAV sent a letter to Horizon31’s counsel regarding Stinson’s alleged interference [Id. ¶ 25]. The same day, Horizon31’s counsel issued a letter

asserting that Horizon31 was entitled to seize “all general intangibles” of Echo MAV, including any proceeds, derivative developments, or accounts arising from its current business [Id. ¶ 26]. Plaintiff alleges that this letter “confirms that Mr. Stinson is now attempting to improperly leverage the Security Agreement into a de facto claim over Echo MAV’s entire business enterprise, including assets never contemplated by the original

transaction” [Id. ¶ 27]. Plaintiff contends that Stinson’s conduct “constitutes a deliberate, calculated effort to convert Echo MAV’s business for the benefit of Horizon31 . . . by circumventing the judicial process and misusing limited rights under the Security Agreement” [Id. ¶ 28]. Further, despite multiple demands to return access, cease interference, and refrain from direct contact with customers and vendors, Stinson has persisted in his efforts [Id. ¶ 29]. On June 12, 2025, Horizon31’s counsel filed an Involuntary Petition for Chapter 7

bankruptcy in the United States Bankruptcy Court for the Eastern District of Tennessee, naming Echo MAV as the alleged debtor [Id. ¶ 30]. In subsequent written communications, Horizon31’s counsel admitted that the Involuntary Petition was filed to exert pressure on Echo MAV to pay the disputed amount at issue in this action [Id. ¶ 32]. Plaintiff has challenged the Involuntary Petition in the bankruptcy court, arguing that it was filed in bad

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Echo MAV, LLC v. Horizon31, LLC and Brad Stinson, (E.D. Tenn. 2026).

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