Eleventh Circuit: Tortious Cease-and-Desist Letters and Personal-Capacity Targeting Defeat the Corporate Shield and Establish Specific Jurisdiction

I. Introduction

Case: Frida Kahlo Corporation v. Mara Cristina Teresa Romeo Pinedo (11th Cir. Apr. 17, 2026).
Parties: Plaintiffs-Appellants Frida Kahlo Corporation (“FKC”) and Frida Kahlo Investments, S.A. sued Defendants-Appellees Familia Kahlo S.A. de C.V. (“Familia Kahlo”) and Mara Cristina Teresa Romeo Pinedo (“Pinedo”), a Mexican resident and alleged heir-related rights holder.
Dispute: Plaintiffs alleged Defendants sent threatening, allegedly false cease-and-desist letters to Plaintiffs’ Florida business partners to stop use of Frida Kahlo marks—conduct pleaded as Florida tortious interference (and initially other claims).
Key issues on appeal: (1) whether Florida’s long-arm statute reached Pinedo despite Florida’s corporate shield doctrine; and (2) whether the Due Process Clause barred specific jurisdiction where the forum contacts were cease-and-desist letters alleged to be tortious.

The district court dismissed for lack of personal jurisdiction, holding Pinedo was protected by the corporate shield doctrine and that sending cease-and-desist letters “without more” could not satisfy due process minimum contacts. The Eleventh Circuit reversed.

II. Summary of the Opinion

The Eleventh Circuit held:

  • Corporate shield doctrine did not protect Pinedo because the letters themselves stated they were sent on behalf of Pinedo in her personal capacity, through Durán/Familia Kahlo as her representatives.
  • Due process allowed specific jurisdiction over both Defendants because the effects test was “easily satisfied,” and because a tortious cease-and-desist letter can satisfy the minimum contacts test—rejecting the district court’s “without more” approach.

The court reversed and remanded for further proceedings.

III. Analysis

A. The operative jurisdictional holding under Florida law: corporate shield is inapplicable when the communication is on behalf of the officer individually

The long-arm hook was Florida Statutes § 48.193(1)(a)(2) (committing a tortious act within Florida, including out-of-state conduct causing in-state injury). The district court accepted jurisdiction over Familia Kahlo but insulated Pinedo via the corporate shield doctrine. The Eleventh Circuit disagreed based on the text of the letters.

The opinion treats the cease-and-desist letters as jurisdictionally dispositive evidence of capacity: they described Familia Kahlo/Durán as representatives acting “in our capacity as representatives of Mrs. Mara Cristina Teresa Romeo Pinedo,” and threatened expansion of Spanish litigation against the recipients. Construing inferences for Plaintiffs, the court found a “clear” indication Durán/Familia Kahlo acted as Pinedo’s agent for a personal-capacity assertion of rights, rendering the corporate shield doctrine inapplicable at the threshold.

Importantly, the panel rejected Defendants’ attempt to reframe the inquiry as whether Pinedo acted “for her own benefit.” Once Plaintiffs established Pinedo acted individually (through an agent), benefit did not control. The court underscored that for certain in-forum tort analyses, Florida jurisdiction may attach irrespective of whether the acts benefited a corporate employer.

B. The due process holding: cease-and-desist letters alleged to be tortious can establish purposeful availment

The court applied the familiar three-part specific-jurisdiction framework: (1) “arise out of or relate to”; (2) purposeful availment; and (3) fair play and substantial justice. The district court had stopped at prong (2); the Eleventh Circuit analyzed all three.

1. “Arise out of or relate to”

The relationship requirement was met because the communications into Florida were not peripheral—they were the alleged interference itself. As in the court’s email-demand scenario precedent, the letters were received in Florida and “triggered” the tortious interference claim.

2. Purposeful availment: the court finds it satisfied under both the effects test and the minimum contacts test

The court emphasized that in intentional tort cases, either test can establish purposeful availment.

  • Effects test: Plaintiffs plausibly alleged an intentional tort; the letters were directly aimed at Florida entities and sought to stop a Miami exhibition; and the injury in Florida was foreseeable. The panel stressed that even “a single tortious act” can suffice, and discounted the argument that only “two letters” were sent.
  • Minimum contacts test: The letters related to the claim, were purposeful forum-directed conduct, and made it reasonably foreseeable Defendants could be haled into Florida court—particularly because the letters allegedly asserted false ownership and threatened liability to stop Florida business activity.

A notable doctrinal move is the court’s explicit rejection of the notion that “sending an infringement letter, without more” is always insufficient. The panel distinguished (and implicitly limited) the persuasive force of the Federal Circuit’s older approach to demand letters by noting that more recent authority recognizes that threatening suit/settlement communications may establish jurisdiction—especially where the communications are alleged to be tortious rather than good-faith notice.

3. Fair play and substantial justice

Weighing burden, forum interest, plaintiff interest, and system efficiency, the court held Defendants failed to make the required “compelling case” against jurisdiction. Florida’s interest was reinforced by alleged harm to Florida business relationships and FKC’s Florida ties; foreign litigation (Spain/Panama) could not determine U.S. trademark use or validity; and Defendants’ own litigation activity and travel undercut the claimed burden.

C. Precedents Cited (and how they shaped the outcome)

  • SkyHop Techs., Inc. v. Narra — Provided the standard of review and, substantively, a close analogy: intentional, targeted communications into Florida that themselves form the basis of the claim satisfy the “arise out of or relate to” requirement and support purposeful availment analysis.
  • Louis Vuitton Malletier, S.A. v. Mosseri — Supplied the Eleventh Circuit’s three-part due process test, the burden-shifting concept (“compelling case”), and corporate shield framing; also supported the idea that purposeful availment may be shown through targeted conduct connected to the cause of action.
  • N. Am. Sugar Indus., Inc. v. Xinjiang Goldwind Sci. & Tech. Co. — Cited for the standard of review for factual findings (clear error), reinforcing the appellate posture.
  • Horizon Aggressive Growth, L.P. v. Rothstein-Kass, P.A. — Confirmed that Florida law controls interpretation of Florida’s long-arm statute and that federal courts are bound by Florida Supreme Court constructions.
  • Doe v. Thompson — Anchored the corporate shield doctrine rationale (“unfair” to force an individual to defend where only relevant contacts were for employer’s benefit), which the panel then found inapplicable on the facts because the letters showed personal-capacity representation.
  • Radcliffe v. Gyves — Used as a contrast: where affidavits unrebutted deny willful acts, the shield may apply; here, affidavits did not rebut the letters’ plain language.
  • Kitroser v. Hurt — Employed to reject a benefit-focused limitation: Florida courts may exercise jurisdiction over nonresident defendants for in-state negligent acts even if undertaken for a corporate employer’s benefit; the panel used it to dismiss Defendants’ “benefit” argument.
  • Del Valle — Cited repeatedly for two propositions critical here: (1) under Florida law, out-of-state conduct causing in-state injury can be a “tortious act within Florida”; and (2) a single tortious act can establish purposeful availment.
  • Diamond Crystal Brands, Inc. v. Food Movers Int'l, Inc. — Quoted for the “compelling case” burden on defendants once the first two prongs are met.
  • Helicopteros Nacionales de Colombia, S.A. v. Hall and Shaffer v. Heitner — Provided foundational framing for the relationship among defendant, forum, and litigation.
  • Ford Motor Co. v. Montana Eighth Jud. Dist. Ct. — Reinforced the “arise out of or relate to” modern articulation and the concept of forum-regulable in-forum “activity or occurrence.”
  • Moore v. Cecil — Supplied the Eleventh Circuit’s formulation of the effects test (intentional tort; aimed at forum; foreseeable in-forum injury).
  • Red Wing Shoe Co., Inc. v. Hockerson-Halberstadt, Inc. — Raised by Defendants for the proposition that infringement letters alone may be insufficient; the panel effectively declined to adopt that categorical view in this tort-based posture.
  • Trimble Inc. v. PerDiemCo LLC — Cited to show that even in the patent-demand context, more recent authority recognizes that threatening-suit communications can establish jurisdiction, undermining a rigid “letters are never enough” rule.
  • Calder v. Jones — Supported foreseeability and “express aiming” reasoning: targeting the forum and anticipating the brunt of injury there supports jurisdiction.
  • Keeton v. Hustler Mag., Inc. and Licciardello v. Lovelady — Confirmed the forum state’s strong interest in redressing injuries within the state, especially from intentional torts.
  • Pers.'s Co. — Invoked to support the proposition (as used by the panel) that foreign litigation cannot determine U.S. trademark use/validity, reducing comity/efficiency objections.

D. Legal reasoning (what is new or clarifying in this decision)

The opinion’s practical doctrinal clarifications are:

  1. Capacity can be established from the face of demand letters. Where correspondence expressly states it is sent as a “representative” of an individual rights-holder and threatens recipients, Florida’s corporate shield doctrine does not automatically insulate the individual simply because the sender is a corporate manager or entity.
  2. Allegedly tortious cease-and-desist letters are not jurisdictionally “neutral.” The court distinguishes between good-faith informational notice and communications pleaded as an intentional tort (here, tortious interference via allegedly false rights assertions and threats). When pleaded as tortious, such letters can create purposeful availment under both the effects test and traditional minimum contacts.
  3. Targeting Florida business activity is enough, even if the broader dispute is international. The panel treats U.S./Florida-centered injury and interference as independently adjudicable notwithstanding parallel foreign proceedings about related ownership disputes.

E. Impact

  • For IP enforcement strategy: Rights-holders and their agents should expect that cease-and-desist letters sent into Florida—especially those threatening suit, asserting rights without identifying registrations, or making allegedly false claims—may expose them to specific jurisdiction in Florida if the recipient or targeted commercial activity is in Florida.
  • For tortious interference and declaratory-relief litigation: Plaintiffs in Florida (or with Florida business partners) gain a stronger jurisdictional pathway to sue out-of-state or foreign defendants whose forum-directed communications are the alleged tort.
  • For individual defendants: The decision narrows practical reliance on the corporate shield doctrine where communications are drafted to emphasize representation of an individual (e.g., “heiress,” “represented”)—a drafting choice that can convert what might have been “corporate-only” contacts into personal-capacity jurisdictional contacts.
  • For cross-border disputes: Parallel foreign proceedings will not necessarily defeat U.S. jurisdiction where U.S. trademark use and U.S.-based business relationships are the immediate target; courts may treat U.S. trademark questions as territorially distinct.

IV. Complex Concepts Simplified

  • Personal jurisdiction: A court’s power to require a defendant to litigate in that forum.
  • Specific jurisdiction: Jurisdiction tied to the defendant’s forum contacts that relate to the particular claims (as opposed to “all-purpose” general jurisdiction).
  • Florida long-arm statute (§ 48.193(1)(a)(2)): Allows Florida courts to reach a nonresident who commits a tort “within” Florida, which can include out-of-state acts that cause injury in Florida.
  • Corporate shield doctrine: A Florida doctrine that may protect a corporate officer from being sued personally in Florida when the officer’s only relevant contacts with Florida were acts done solely for the corporation. It does not apply when the officer is acting in an individual capacity (including through an agent).
  • Effects test: A way to show purposeful availment in intentional tort cases: intentional tort + aimed at the forum + foreseeable forum injury.
  • Minimum contacts: The constitutional requirement that the defendant has sufficient connections to the forum such that being sued there is foreseeable and fair.
  • “Fair play and substantial justice”: Even with contacts, jurisdiction must be reasonable when considering burdens, forum interests, and efficiency.

V. Conclusion

The Eleventh Circuit’s decision strengthens Florida (and Eleventh Circuit) specific-jurisdiction doctrine for intentional tort cases arising from IP-related threats: when cease-and-desist letters are plausibly pleaded as tortious interference and are aimed at stopping Florida business activity, they can supply both the statutory basis under Florida’s long-arm statute and the constitutional basis under due process. Additionally, where correspondence states it is sent on behalf of an individual rights-holder, the corporate shield doctrine will not bar personal jurisdiction over that individual merely because a corporate entity or manager transmitted the communication.