Non‑Signatory Enforcement of Delegation Clauses: Courts Decide; State Law Governs Equitable Estoppel Even Under FAA Chapter 2

1. Introduction

This appeal arises out of the collapse of the Terra blockchain’s “stablecoin” TerraUSD (“Terra”) and its companion token LUNA, a market failure that erased roughly $40 billion in nominal value. The plaintiffs—led by Taewoo Kim, a Terra holder—allege that Jump Trading, LLC and Jump Crypto Holdings LLC (“Jump”) conspired with Terraform Labs (“Terraform”) to manipulate Terra’s price and to mislead investors about the stability mechanism that supposedly held Terra at $1.

Kim did not sue Terraform in court because he had agreed, via the “Anchor Protocol” terms, to arbitrate disputes in Singapore under SIAC Rules, including “any claim or controversy as to arbitrability.” Instead, Kim sued Jump under the Commodities Exchange Act, associated regulations, and unjust enrichment. Jump—concededly a non-party to the Terraform–Kim arbitration agreement—moved to compel arbitration anyway, invoking equitable estoppel and arguing that the delegation clause required an arbitrator (not a judge) to decide whether Jump could enforce the arbitration agreement.

The district court denied the motion to compel arbitration, and Jump appealed under 9 U.S.C. §16(a). The Seventh Circuit affirmed, resolving two recurring questions in modern arbitration litigation: (1) who decides if a non-signatory can invoke a delegation clause, and (2) what law governs non-signatory equitable estoppel in New York Convention cases.

2. Summary of the Opinion

The Seventh Circuit held:

1. Courts decide whether a non-signatory can enforce the delegation clause. Although parties may agree to arbitrate “arbitrability,” a non-signatory cannot force an arbitrator to decide its entitlement to that delegation without first showing, in court, that it has contractual rights to enforce the agreement (e.g., as a third-party beneficiary).
2. State law governs equitable estoppel even under FAA Chapter 2. Chapter 2 does not create a freestanding federal common law of equitable estoppel; instead, 9 U.S.C. §208 incorporates Chapter 1, and Arthur Andersen LLP v. Carlisle requires using state contract doctrines for non-signatory enforcement.
3. Illinois equitable estoppel bars Jump’s attempt. Illinois requires the non-signatory seeking estoppel to show reasonable reliance on the arbitration contract. Jump alleged no such reliance, so it could not compel arbitration.

Accordingly, Jump must litigate Kim’s claims in federal court. The judgment denying arbitration was affirmed.

3. Analysis

3.1. Precedents Cited

Foundational arbitration consent and “what did these parties agree to?”

• AT&T Technologies, Inc. v. Communications Workers: The court emphasized that arbitration is contractual; courts compel arbitration only when the parties agreed. This frames the inquiry as one of agreement, not policy preference.
• Coinbase, Inc. v. Suski and First Options of Chicago, Inc. v. Kaplan: Used to underscore that arbitration is “strictly a matter of consent” and that the threshold question is what the parties agreed to. The panel used these decisions to reject Jump’s attempt to treat the delegation language as universally enforceable by outsiders.

Delegation clauses and who decides enforceability

• Howsam v. Dean Witter Reynolds, Inc. and Janiga v. Questar Capital Corp.: Jump relied on these for the proposition that “arbitrability” questions can be delegated. The Seventh Circuit distinguished them by insisting on a prior step: before deciding what is delegated, a court must decide who is entitled to invoke the delegation clause.
• Rent-A-Center, West, Inc. v. Jackson: Central to the opinion’s architecture. The court invoked Rent-A-Center for the proposition that courts decide whether a delegation agreement is enforceable and by whom—preventing strangers from self-executing a delegation clause against a non-consenting party.

Non-signatory enforcement and default contract rules

• Morales-Posada v. Cultural Care, Inc.: Cited for third-party beneficiary principles, acknowledging the doctrinal “best hope” for Jump—but noting Jump did not pursue that route.
• CCC Intelligent Solutions Inc. v. Tractable Inc. (and again Morales-Posada v. Cultural Care, Inc.): Reiterated the default rule that a non-party (C) cannot claim rights under a contract between A and B absent a recognized exception.
• In re Automotive Parts Antitrust Litigation and Kramer v. Toyota Motor Corp.: Reinforced that broad language in a bilateral arbitration agreement does not automatically extend the delegation clause or arbitration obligation to third parties.

Illinois equitable estoppel and reliance requirement

• Ervin v. Nokia, Inc.: Treated as controlling for Illinois’s version of equitable estoppel, requiring reasonable reliance by the third party on the arbitration contract.
• Sunco International Inc. v. Jiangsu Sunco Boiler Co., Ltd.: Cited as a contemporaneous Seventh Circuit decision supporting the same Illinois-law framing.

FAA Chapter 1 vs Chapter 2; state law vs federal common law in New York Convention cases

• Arthur Andersen LLP v. Carlisle: The cornerstone for applying state-law equitable estoppel in FAA Chapter 1 cases. The Seventh Circuit treated Arthur Andersen as the key to reading §208 (Chapter 2’s “gap-filler”) as importing Chapter 1’s state-law approach into Chapter 2 when Chapter 2 is silent.
• GE Energy Power Conversion France SAS, Corp. v. Outokumpu Stainless USA, LLC: Jump invoked GE Energy to argue for federal courts developing a “common law” of estoppel under Chapter 2. The Seventh Circuit read GE Energy more narrowly: it permits application of “domestic” doctrines, and in the U.S. those domestic doctrines are typically state-law contract doctrines.
• Cassirer v. Thyssen-Bornemisza Collection Foundation: Used to reinforce the general method of looking to state law rather than inventing federal rules without a clear need.
• M&G Polymers USA, LLC v. Tackett and CNH Industrial N.V. v. Reese: Offered as analogies showing that when federal law needs contract principles, courts generally apply ordinary contract law (often borrowed from state law), rather than crafting novel rules.

Circuit split on estoppel in Chapter 2 cases

• Setty v. Shrinivas Sugandhalaya LLP; InterGen N.V. v. Grina; Smith/Enron Cogeneration Limited Partnership, Inc. v. Smith Cogeneration International, Inc.; International Paper Co. v. Schwabedissen Maschinen & Anlagen GMBH: Identified as circuits applying federal common law for estoppel in Chapter 2 settings.
• Vinton v. Indian Harbor Insurance Co.: The contrary view—state law applies—adopted by the Seventh Circuit here (with a note that a cert petition is pending).

Federal common law methodology and limits

• United States v. Kimbell Foods, Inc.: The court’s methodological anchor: even when federal common law exists, forum state law generally supplies the rule absent a need for uniformity or risk of frustrating federal interests.
• United States v. Crown Equipment Corp. and West v. Louisville Gas & Electric Co.: Seventh Circuit examples of borrowing forum state law to supply federal rules.
• Schoeps v. Sompo Holdings, Inc.: Used for the proposition that arguments outside the contract’s text presumptively rest on forum state law.
• Bock v. Computer Associates International, Inc.: Cited for the practice of developing federal rules from ordinary/general contract principles when needed.

Rejecting arbitration-favoring policy as a basis for expanding estoppel

• MS Dealer Service Corp. v. Franklin: Cited as an example of the broader non-signatory estoppel theory Jump sought (third-party can compel arbitration where claims allege joint misconduct).
• Morgan v. Sundance, Inc.: Used to reject the notion that federal law embodies a pro-arbitration policy that justifies special arbitration-only doctrines. The panel emphasized that the FAA’s purpose is enforcing contracts, not promoting arbitration.

Limiting older Seventh Circuit authority

• Underwriters at Lloyd’s v. Argonaut Insurance Co.: Jump invoked Argonaut for federal uniformity in Chapter 2 contexts, but the court confined it (timeliness, not estoppel), noted it predated Arthur Andersen, and emphasized it did not grapple with 9 U.S.C. §208.

3.2. Legal Reasoning

(A) The “who decides?” question: delegation does not answer non-signatory entitlement.

The opinion’s first move is conceptual: “arbitrability” can be delegated, but delegation itself is a contract promise. Jump tried to use Kim’s promise to Terraform (“arbitrate any claim or controversy as to arbitrability”) as a universal procedural gateway, letting any non-signatory force the “can I enforce this?” question into arbitration.

The Seventh Circuit rejected that maneuver by applying a sequencing rule drawn from consent principles and Rent-A-Center: a court must first determine whether Jump is among the set of entities entitled to enforce the arbitration agreement (including its delegation clause). Otherwise, “anyone could benefit from a stranger’s agreement,” contradicting ordinary contract law and the FAA’s parity principle (arbitration agreements are not elevated above other contracts).

(B) The “what law?” question: §208 + Arthur Andersen = state law in Chapter 2 estoppel disputes.

On the merits, the opinion turns to governing law. Jump argued that because the arbitration agreement is “foreign” (Singapore arbitration, Terraform foreign), Chapter 2 supplies a federal equitable-estoppel rule, unlike Chapter 1’s state-law approach.

The court’s response is textual and structural:

• Chapter 2 is silent on estoppel.
• 9 U.S.C. §208 fills Chapter 2 gaps by incorporating Chapter 1.
• Arthur Andersen LLP v. Carlisle interprets Chapter 1 to incorporate state-law doctrines for non-signatory enforcement, including equitable estoppel.

Therefore, state law governs estoppel under Chapter 2 as well. The court also rebuffed the policy and uniformity arguments: Jump identified no treaty or statutory requirement for a uniform federal estoppel rule, and Morgan v. Sundance, Inc. undermines “arbitration-promoting” rationales for inventing special rules.

(C) Applying Illinois equitable estoppel: reliance is missing.

Having selected Illinois law (the forum), the outcome was straightforward. Under Ervin v. Nokia, Inc., Illinois estoppel requires reasonable reliance by the party seeking to enforce arbitration. Jump did not allege it relied on Kim’s conduct or representations regarding the Terraform–Kim terms of service. Without reliance, equitable estoppel fails, and Jump cannot compel arbitration.

3.3. Impact

• Stronger judicial gatekeeping over delegation clauses for non-signatories. The decision sharply limits attempts by non-signatories to bootstrap themselves into arbitration by pointing to delegation language. Practically, this means more threshold litigation in court (not before arbitrators) when affiliates, alleged co-conspirators, vendors, or platform counterparts attempt to compel arbitration without being signatories.
• State-law variability becomes decisive in New York Convention cases. By holding that state law controls equitable estoppel even under Chapter 2, the Seventh Circuit embraces non-uniform outcomes across states for non-signatory enforcement—unless parties draft around it (e.g., explicit affiliate/agent coverage, third-party beneficiary language, assignment provisions).
• Constrains “concerted misconduct” estoppel theories. The court signaled skepticism toward the broader rule associated with MS Dealer Service Corp. v. Franklin, characterizing it as not “ordinary” contract law because it confers benefits on third parties who did not negotiate for them.
• Drafting lesson for fintech/crypto ecosystems. Platform terms often attempt to bind users to arbitrate while business operations involve multiple entities (exchanges, market makers, affiliates). This opinion incentivizes explicit multi-party arbitration architecture if firms expect non-signatories to compel arbitration (especially on delegation issues).
• Reinforces Morgan’s anti-“arbitration preference” posture. The court used Morgan v. Sundance, Inc. to foreclose policy-driven expansion of arbitration enforcement doctrines. The FAA enforces contracts; it does not license courts to create arbitration-specific advantages.

4. Complex Concepts Simplified

• Stablecoin / arbitrage mechanism (Terra/LUNA): Terra was designed to trade at $1 without reserves by allowing conversion between Terra and $1 worth of LUNA. If Terra fell below $1, traders could buy cheap Terra, convert to $1 of LUNA, sell LUNA, and profit—pushing Terra back to $1. The complaint alleges this “self-correcting” story was misleading because Jump allegedly propped up Terra in 2021, masking the mechanism’s weakness.
• Delegation clause (“arbitrability”): A contract term that sends threshold questions—like whether a dispute must be arbitrated—to the arbitrator instead of a judge. This case holds that a non-signatory cannot rely on such language unless a court first finds the non-signatory has enforcement rights.
• Equitable estoppel (in arbitration): A doctrine sometimes allowing a non-signatory to enforce an arbitration clause when fairness requires it (for example, when the plaintiff sues to enforce contract benefits while avoiding its arbitration provision). Illinois’s version requires the non-signatory to have reasonably relied on the contract or the other party’s conduct tied to it.
• FAA Chapter 1 vs Chapter 2: Chapter 1 is the general domestic FAA. Chapter 2 implements the New York Convention for certain international arbitration agreements. Section 208 says Chapter 1 applies to Chapter 2 cases where Chapter 2 is silent—here, on estoppel.
• Third-party beneficiary: A non-party can sometimes enforce a contract if the contract shows the parties intended to benefit that non-party. Jump did not meaningfully argue it qualified.

5. Conclusion

Taewoo Kim v. Jump Trading, LLC is a significant Seventh Circuit statement about the limits of non-signatory arbitration enforcement in both domestic and New York Convention contexts. The court reaffirmed that arbitration rises and falls with consent: before delegation clauses can shift “arbitrability” questions away from judges, a court must decide whether the entity invoking the delegation clause has contractual standing to do so. The court also deepened a circuit split by holding that state law governs equitable estoppel even under FAA Chapter 2, via §208 and Arthur Andersen LLP v. Carlisle, rejecting a freestanding federal common law of estoppel and resisting policy-driven expansions in the name of “promoting arbitration” in light of Morgan v. Sundance, Inc.

The practical takeaway is straightforward: parties who want affiliates or related entities to compel arbitration—especially on threshold “who decides” questions—must draft for that outcome explicitly, because courts will not infer it from broad arbitration scope language or from allegations of joint misconduct alone.