Summary. A company in Shenzhen sells 40 units into Illinois through a marketplace. A blogger in Ireland writes something defamatory about a California executive. A German manufacturer sells components to an American assembler who ships finished products everywhere. In each case the threshold question is the same and is genuinely hard: may a United States court exercise power over this defendant? This article explains the modern doctrine of personal jurisdiction as it applies to online and foreign defendants, beginning with the constitutional framework of International Shoe and the sharp separation of general and specific jurisdiction the Supreme Court has enforced since Goodyear and Daimler. It covers the effects test of Calder as narrowed by Walden, the Zippo sliding scale for websites and why most circuits have moved past it, the "express aiming" and "something more" standards that replaced it, the meaning of Ford Motor's holding that a claim may "arise out of or relate to" forum contacts without strict causation, and Mallory's revival of consent by corporate registration. It then addresses the machinery: state long-arm statutes, the federal long-arm of Rule 4(k)(2), jurisdictional discovery, waiver under Rule 12, and the practicalities of suing defendants abroad. It closes with strategy for both sides, a worked example, an FAQ, and related reading.

Personal jurisdiction is the first question in every case with a defendant who is not obviously local, and it is the question most likely to end a case before anyone argues the merits. It is also the area of civil procedure that has changed the most in the last fifteen years, largely because the Supreme Court decided to take it seriously again after decades of relative quiet.

The doctrine's central difficulty is that it was built for a world of factories, salesmen, and railroads, and it now has to answer questions about server locations, marketplace algorithms, and content delivery networks. Courts have responded with a mix of nineteenth-century vocabulary and twenty-first century facts, and the results are not always coherent. What follows is a map of where the law actually is.

The short answer

Two constitutional questions and one statutory one:

  1. Is there a statutory basis? The forum's long-arm statute (borrowed by Fed. R. Civ. P. 4(k)(1)(A)), a federal statute providing for nationwide service, or Rule 4(k)(2)'s federal long-arm.
  2. Is there general jurisdiction? The defendant must be "essentially at home" in the forum: for an individual, domicile; for a corporation, its place of incorporation and principal place of business, absent an exceptional case. Daimler AG v. Bauman, 571 U.S. 117 (2014).
  3. Is there specific jurisdiction? The defendant must have purposefully availed itself of the forum, the claim must arise out of or relate to those contacts, and the exercise must be reasonable.

For online and foreign defendants, the fights are almost always about (3), and the two decisive concepts are purposeful availment (did the defendant target this forum, or merely operate in a world that includes it?) and relatedness (how tightly must the claim connect to the forum contacts?).

Part I: The constitutional framework

From Pennoyer to International Shoe

The old rule was territorial: a court's power ran to persons and property within its borders. Pennoyer v. Neff, 95 U.S. 714 (1878). That worked until commerce stopped respecting state lines.

International Shoe Co. v. Washington, 326 U.S. 310 (1945), replaced territorial power with a relational test: due process requires "certain minimum contacts with [the forum] such that the maintenance of the suit does not offend traditional notions of fair play and substantial justice." The opinion also planted the seed of the general/specific distinction by distinguishing between continuous and systematic activities giving rise to the claim and those that do not.

Purposeful availment

Hanson v. Denckla, 357 U.S. 235 (1958), added the requirement that "there be some act by which the defendant purposefully avails itself of the privilege of conducting activities within the forum State, thus invoking the benefits and protections of its laws."

Burger King Corp. v. Rudzewicz, 471 U.S. 462 (1985), is the best explanation of why. Purposeful availment ensures a defendant "will not be haled into a jurisdiction solely as a result of random, fortuitous, or attenuated contacts, or of the unilateral activity of another party or a third person." It also supplies fair warning, so that a defendant can "structure their primary conduct with some minimum assurance as to where that conduct will and will not render them liable to suit."

Burger King also confirmed that a contract alone does not automatically establish jurisdiction; courts look at prior negotiations, contemplated future consequences, the terms of the contract, and the parties' actual course of dealing.

The reasonableness factors

Even where minimum contacts exist, the exercise must comport with fair play and substantial justice. Asahi Metal Industry Co. v. Superior Court, 480 U.S. 102 (1987), lists the factors: the burden on the defendant, the forum state's interest, the plaintiff's interest in convenient and effective relief, the interstate judicial system's interest in efficient resolution, and the shared interest of the states in furthering fundamental social policies.

Asahi emphasized that "[t]he unique burdens placed upon one who must defend oneself in a foreign legal system should have significant weight in assessing the reasonableness of stretching the long arm of personal jurisdiction over national borders." That passage does real work in cases against foreign manufacturers, and defense counsel should always brief it.

Part II: General jurisdiction is now very narrow

For most of the twentieth century, "doing business" in a state was thought to support general jurisdiction over any claim. That is no longer the law.

Goodyear Dunlop Tires Operations, S.A. v. Brown, 564 U.S. 915 (2011), held that a foreign subsidiary whose tires reached North Carolina through the stream of commerce was not subject to general jurisdiction there. The test is whether the defendant's affiliations are "so continuous and systematic as to render them essentially at home in the forum State."

Daimler AG v. Bauman, 571 U.S. 117 (2014), made the narrowing explicit. Even Mercedes-Benz USA's substantial California sales did not make Daimler at home there. The paradigm bases are place of incorporation and principal place of business, with an "exceptional case" escape hatch that the Court described but has never applied.

BNSF Railway Co. v. Tyrrell, 581 U.S. 402 (2017), applied that to a railroad with over 2,000 miles of track and 2,000 employees in Montana: not at home, because the comparison is to the corporation's activities in their entirety, not to its activities in the forum in isolation.

The practical result: general jurisdiction is available in two states, and stop looking for a third. Everything else is specific jurisdiction.

Except: consent by registration after Mallory

Mallory v. Norfolk Southern Railway Co., 600 U.S. 122 (2023), held that a state may require a corporation to consent to general personal jurisdiction as a condition of registering to do business, and that such consent does not violate due process. Pennsylvania's statute expressly conditioned registration on submission to general jurisdiction, and the Court upheld it, relying on the century-old decision in Pennsylvania Fire Insurance Co. v. Gold Issue Mining & Milling Co., 243 U.S. 93 (1917).

Mallory is narrower than it first appears, because most states' registration statutes do not say what Pennsylvania's said. A generic requirement to register and appoint an agent for service is usually construed not to confer general jurisdiction. But Mallory has prompted legislative proposals in several states, and a dormant Commerce Clause challenge remains open (Justice Alito's concurrence flagged it, and the Court did not resolve it). Check the registration statute of any forum you are considering.

Part III: Specific jurisdiction

Three requirements, and each has its own body of law.

1. Purposeful availment or purposeful direction

Courts apply different formulations depending on the claim:

  • Contract and commercial claims: purposeful availment, focusing on the defendant's deliberate engagement with the forum market.
  • Intentional torts: purposeful direction, evaluated under the Calder effects test.

The Calder effects test, and what Walden did to it

Calder v. Jones, 465 U.S. 783 (1984), upheld California jurisdiction over Florida-based writers and editors of a National Enquirer article about a California entertainer. The Court emphasized that California was the focal point both of the story and of the harm, and that the defendants knew the brunt of the injury would be felt there.

The Ninth Circuit distilled a three-part test: (1) an intentional act, (2) expressly aimed at the forum state, (3) causing harm the defendant knows is likely to be suffered in the forum state.

Then came Walden v. Fiore, 571 U.S. 277 (2014), which sharply limited it. A Georgia DEA agent seized cash from Nevada residents at the Atlanta airport. The Ninth Circuit found Nevada jurisdiction because the agent knew the plaintiffs lived there and would feel the harm there. The Supreme Court reversed unanimously, holding:

  • "The relationship must arise out of contacts that the defendant himself creates with the forum State."
  • The analysis looks to the defendant's contacts with the forum State itself, "not the defendant's contacts with persons who reside there."
  • "[M]ere injury to a forum resident is not a sufficient connection to the forum."

Walden is the single most important case for defense counsel in online disputes. Knowing that the plaintiff lives in the forum and will suffer harm there does not create jurisdiction. Something must connect the defendant to the place.

2. "Arise out of or relate to": what Ford Motor decided

For decades, courts split over whether specific jurisdiction requires but-for or proximate causation between the forum contacts and the claim.

Bristol-Myers Squibb Co. v. Superior Court, 582 U.S. 255 (2017), first tightened the screws. Non-resident plaintiffs who bought Plavix outside California could not sue BMS in California just because other plaintiffs could and because BMS sold the drug there. There must be "an affiliation between the forum and the underlying controversy," and "a defendant's relationship with a third party, standing alone, is an insufficient basis for jurisdiction." That holding reshaped mass tort practice and created serious problems for nationwide class actions.

Ford Motor Co. v. Montana Eighth Judicial District Court, 592 U.S. 351 (2021), then rejected a strict causation requirement. Two product liability suits were brought in Montana and Minnesota over accidents involving Ford vehicles that had been designed, manufactured, and first sold elsewhere and reached the forum states through resale. Ford argued that because it did not sell these cars in these states, the claims did not arise out of its forum contacts.

The Court disagreed, holding that the phrase "arise out of or relate to" is disjunctive: "the first half of that standard asks about causation; but the back half, after the 'or,' contemplates that some relationships will support jurisdiction without a causal showing." Ford had "systematically served a market in Montana and Minnesota for the very vehicles that the plaintiffs allege malfunctioned," advertised there, sold parts there, and serviced the cars there. That was enough.

Ford is the plaintiff's best modern case, and it is often misread as abolishing relatedness. It did not. The Court cautioned that "relate to" "incorporates real limits," and it declined to define them. The workable synthesis: market-serving conduct in the forum for the same product line as the one that caused the injury will generally suffice, even without a traceable sale.

3. Reasonableness

Once minimum contacts are shown, the defendant bears the burden of presenting a "compelling case" that other considerations make jurisdiction unreasonable. Burger King, 471 U.S. at 477. For foreign defendants, the Asahi burden factor carries real weight.

Part IV: The internet cases

Zippo and its decline

Zippo Manufacturing Co. v. Zippo Dot Com, Inc., 952 F. Supp. 1119 (W.D. Pa. 1997), proposed a sliding scale based on website interactivity:

  • Passive sites that merely post information: no jurisdiction.
  • Interactive sites where users exchange information: jurisdiction depends on the level of interactivity and the commercial nature of the exchange.
  • Active sites through which the defendant "clearly does business" over the internet with forum residents: jurisdiction.

Zippo was enormously influential and is now largely obsolete as a standalone test, for a simple reason: essentially every commercial website is now interactive. A framework that turns on whether a site has a shopping cart cannot distinguish among the millions of sites that do.

What replaced it

Most circuits now treat interactivity as one fact among many, and ask whether the defendant targeted the forum.

Sales into the forum

The clearest modern rule concerns actual sales. Where a defendant ships goods directly to a purchaser in the forum, courts have generally found purposeful availment.

The remaining fight is whether a single test purchase engineered by the plaintiff should suffice. The Seventh and Ninth Circuits have said the identity of the buyer does not defeat jurisdiction; other courts have been more skeptical, particularly where there is no evidence of any other forum sale. Plaintiffs should document multiple sales, forum-specific shipping options, forum-targeted advertising, and forum-specific listing content wherever possible. This matters enormously in mass online enforcement; see Counterfeiting, Seizure Orders, and Schedule A Litigation.

Part V: The stream of commerce problem

Where a component maker sells to a manufacturer who incorporates the component into a product sold nationwide, is the component maker subject to jurisdiction wherever the product goes?

The Supreme Court has twice failed to produce a majority answer.

In Asahi (1987), Justice O'Connor's plurality would have required "additional conduct" indicating an intent to serve the forum market: designing for the forum, advertising there, establishing channels for customer advice, or marketing through a distributor who serves as a sales agent. Justice Brennan's plurality would have found awareness that the product would reach the forum through the regular flow of commerce sufficient.

In J. McIntyre Machinery, Ltd. v. Nicastro, 564 U.S. 873 (2011), an English manufacturer sold metal-shearing machines through an independent U.S. distributor; one ended up in New Jersey, where it injured the plaintiff. The Court reversed a finding of jurisdiction, but again without a majority rationale. Justice Kennedy's plurality emphasized that the defendant must "target the forum," and that a "defendant's transmission of goods permits the exercise of jurisdiction only where the defendant can be said to have targeted the forum." Justice Breyer concurred in the judgment on narrower grounds: a single sale, without more, could not support jurisdiction under any of the Court's precedents.

Where that leaves practitioners: because Nicastro's controlling opinion is Justice Breyer's narrow concurrence under Marks v. United States, 430 U.S. 188 (1977), lower courts continue to apply their pre-existing circuit approaches, and the split persists. In practice, plaintiffs win stream-of-commerce cases by showing forum-directed conduct: regulatory approvals sought for the forum, forum-specific labeling or language, distribution agreements naming the forum, sales volume, or marketing. Ford Motor has helped plaintiffs considerably here, because it directs attention to whether the defendant "systematically served" the forum market for the product line at issue.

Part VI: The statutory machinery

Constitutional analysis is only half the problem. There must also be a rule or statute authorizing service.

Rule 4(k)(1)(A): borrowing the state long-arm

Service establishes jurisdiction over a defendant "who is subject to the jurisdiction of a court of general jurisdiction in the state where the district court is located." Fed. R. Civ. P. 4(k)(1)(A).

State long-arm statutes come in two varieties:

  • Coextensive statutes (California, Illinois in effect, many others) reach to the limits of due process, collapsing the statutory and constitutional inquiries.
  • Enumerated statutes (New York's CPLR § 302, Texas, Florida, and others) list specific acts (transacting business, committing a tort in the state, contracting to supply goods or services). These can be narrower than due process allows, and a defendant may win on the statute without reaching the Constitution. Always check whether your forum has an enumerated statute, and plead into a specific subsection.

Rule 4(k)(2): the federal long-arm

This is the underused provision that matters most for foreign defendants. It authorizes jurisdiction for a claim arising under federal law if:

  1. the defendant is not subject to jurisdiction in any state's courts of general jurisdiction; and
  2. exercising jurisdiction is consistent with the Constitution and laws of the United States.

The contacts analysis under Rule 4(k)(2) is with the United States as a whole, not with a single state. That is a substantially easier showing against a foreign defendant with diffuse national contacts and no concentrated presence anywhere.

The negation problem. How does a plaintiff prove the defendant is not subject to jurisdiction in any state? Most circuits have adopted a burden-shifting approach: if the defendant contends it is not subject to Rule 4(k)(2), it must name a state where suit is possible; if it does not, Rule 4(k)(2) applies. Defense counsel therefore face a genuine dilemma: concede jurisdiction somewhere, or accept nationwide contacts analysis.

Rule 4(k)(2) is the natural vehicle for Lanham Act, copyright, patent, antitrust, and securities claims against foreign online actors, and it is regularly overlooked.

Nationwide service statutes

Some federal statutes authorize nationwide service, which triggers a national-contacts analysis: the securities laws (15 U.S.C. § 78aa), ERISA, RICO (18 U.S.C. § 1965), and the interpleader statute among them. A few circuits also apply a Fifth Amendment fairness overlay in such cases.

Service abroad

Jurisdiction is not service, and both are required. Service on a foreign defendant proceeds under Fed. R. Civ. P. 4(f):

  • 4(f)(1): by internationally agreed means, principally the Hague Service Convention. Water Splash, Inc. v. Menon, 581 U.S. 254 (2017), held that the Convention does not prohibit service by mail where the receiving state does not object and the forum's law permits it.
  • 4(f)(2): by the foreign country's prescribed method, by letter rogatory, or by other means not prohibited.
  • 4(f)(3): by "other means not prohibited by international agreement, as the court orders." This is the basis for email and social media service, which courts grant routinely against evasive or anonymous foreign defendants. Rio Properties, Inc. v. Rio International Interlink, 284 F.3d 1007 (9th Cir. 2002), is the foundational case; it holds that 4(f)(3) is neither a last resort nor extraordinary relief, but merely one means among several.

For the China-specific problems (the Central Authority's slow processing, China's objection to Article 10 postal service, translation requirements), see our detailed treatments in Serving Defendants in China and Serving a China-Based Defendant Under the Hague Service Convention.

Part VII: Procedure

Raising and waiving the defense

A personal jurisdiction defense must be raised in the first Rule 12 motion or in the answer, whichever comes first. Fed. R. Civ. P. 12(b)(2), 12(g)(2), 12(h)(1). Omit it and it is gone forever. This is the most commonly forfeited defense in federal practice, and the forfeiture is irrevocable.

Personal jurisdiction, unlike subject matter jurisdiction, is a waivable individual right, not a structural limit. Insurance Corp. of Ireland v. Compagnie des Bauxites de Guinee, 456 U.S. 694 (1982). It may be waived expressly (a forum selection clause), by consent, by conduct, or by sanction for failing to comply with jurisdictional discovery.

See Motions to Dismiss Under Rule 12 for the full Rule 12 sequencing rules.

Burden and standard

The plaintiff bears the burden. Where the court decides on the papers, the plaintiff need only make a prima facie showing, and the court takes uncontroverted allegations as true and resolves factual conflicts in the plaintiff's favor. If the court holds an evidentiary hearing, the plaintiff must prove jurisdiction by a preponderance.

Note a trap: a plaintiff who survives on a prima facie showing may still face the issue again at trial, because a preliminary ruling is not preclusive on the ultimate fact.

Jurisdictional discovery

Courts have discretion to permit limited discovery on jurisdictional facts. The showing required varies; most courts want more than speculation but less than proof. A targeted request works far better than an open-ended one.

Requests that get granted:

  • Sales and shipment data for the forum.
  • Website analytics showing forum traffic and forum-directed features.
  • Advertising placements and geo-targeting settings.
  • Distribution and reseller agreements covering the forum.
  • Communications with forum residents.
  • Corporate structure and control documents (for alter ego and agency theories).

Alternatives when jurisdiction fails

  • Transfer under 28 U.S.C. § 1406(a) to a district where the case could have been brought, which the court may do even lacking personal jurisdiction (Goldlawr, Inc. v. Heiman, 369 U.S. 463 (1962)).
  • Transfer under 28 U.S.C. § 1631 for want of jurisdiction.
  • Sue where the defendant is at home, including abroad, which raises its own enforcement questions.
  • Sue the domestic actor in the chain (the importer, the platform, the landlord) instead.
  • Proceed in rem or quasi in rem against domain names under the ACPA, 15 U.S.C. § 1125(d)(2), which is expressly designed for the case where personal jurisdiction over the registrant is unavailable.
  • Use the ITC. A Section 337 investigation reaches imported goods without needing personal jurisdiction over the foreign manufacturer in a district court sense.

Part VIII: Strategy

For plaintiffs

  1. Plead jurisdiction with facts, not labels. A complaint that alleges "Defendant does business in this District" invites dismissal. Allege the sales, the shipments, the advertising, the forum-specific content.
  2. Buy the product, multiple times, and document it. Preserve the listing, the order confirmation, the shipping label, and the packaging. See Authenticating Website Evidence.
  3. Look for forum-targeting signals: currency, language, shipping options, tax collection, geo-targeted ads, forum-specific landing pages, local phone numbers, and regulatory filings.
  4. Consider Rule 4(k)(2) early for federal claims against foreign defendants.
  5. Use Ford Motor properly. Frame the argument as market-serving conduct for the relevant product line in the forum, not as "they knew it might end up here."
  6. Check Mallory. Is the defendant registered in a state whose statute expressly conditions registration on general jurisdiction?
  7. Ask for jurisdictional discovery in the alternative in your opposition, with a specific list.

For defendants

  1. Raise it first, or lose it. Rule 12(h)(1) is unforgiving.
  2. Lead with Walden. The plaintiff's residence and the location of its harm are not contacts you created.
  3. Attack relatedness. Bristol-Myers Squibb remains powerful, especially where the plaintiff's own transaction happened elsewhere.
  4. Build the record with a declaration, not attorney argument: no offices, no employees, no property, no bank accounts, no advertising directed at the forum, no forum-specific site features, and precise sales figures.
  5. Contest a single test purchase. Argue it is the plaintiff's unilateral activity, not the defendant's targeting, though acknowledge the contrary circuit authority.
  6. Handle Rule 4(k)(2) carefully. If you deny amenability everywhere, you invite national-contacts analysis. Consider conceding a home-state forum if that forum is acceptable.
  7. Preserve the reasonableness argument, especially for foreign clients where Asahi's burden factor and comity concerns are real.
  8. Watch for forum selection clauses in your own terms of service that may have consented to jurisdiction somewhere. See Website Terms of Service and Online Contract Formation.

A worked example

Silvercrest Tools, Inc. (fictional), an Oregon company, holds a design patent and a registered trademark on a distinctive torque wrench. It finds three problems.

Defendant A: Lianhe Hardware Co., a Chinese manufacturer selling through an online marketplace. Silvercrest's investigator ordered two units to Oregon; both shipped from Guangzhou with Oregon addresses on the labels. The listing offered USD pricing, U.S. shipping options, and English-language descriptions.

Analysis. Under HANWJH and Herbal Brands, direct shipment into the forum on a non-isolated basis is purposeful availment. Two documented sales are better than one. Silvercrest should also plead Rule 4(k)(2) in the alternative for the federal claims, and should seek marketplace discovery on total Oregon sales. Service will proceed under Rule 4(f)(3) by email if the court permits, given the difficulty of Hague service on Chinese defendants.

Defendant B: Werkzeug GmbH, a German manufacturer that sells to a Michigan importer, which resells nationwide. No direct Oregon contact. Werkzeug's website is in German, prices in euros, no U.S. shipping.

Analysis. This is the Nicastro problem. Silvercrest needs "something more": evidence that Werkzeug sought U.S. regulatory approvals, designed to U.S. standards, produced English-language manuals, participated in U.S. trade shows, or contractually directed the importer's distribution. Absent that, jurisdiction in Oregon is doubtful, and the better targets are the Michigan importer (clear jurisdiction there) or a Section 337 investigation at the ITC.

Defendant C: a review site operated from Ireland that published a comparison calling Silvercrest's wrench "a counterfeit of the German original." Silvercrest is an Oregon company and felt the harm there.

Analysis. Under Walden, harm to an Oregon plaintiff is not enough. Silvercrest must show the site targeted Oregon or the United States: U.S.-directed advertising, a U.S. audience it cultivated deliberately, U.S.-specific content, or revenue from U.S. sources it solicited. AMA Multimedia shows that substantial U.S. traffic alone will not carry the day in the Ninth Circuit. If federal claims are pleaded (Lanham Act false advertising), Rule 4(k)(2) may supply a route based on national contacts.

Sequencing. Sue the Michigan importer first, in Michigan, where jurisdiction is certain and discovery will reveal Werkzeug's actual U.S.-directed conduct. Use what that produces to decide whether to add Werkzeug. That is usually a better plan than filing a jurisdictionally aggressive case and losing it.

Frequently asked questions

Can I sue a foreign company in my home state just because its product hurt me there? Not automatically. You need contacts the defendant created with the state. If the defendant systematically served the market in your state for that product line, Ford Motor is strong support. If the product arrived through unrelated resale and the defendant never targeted your state, Nicastro is a serious obstacle.

Does having a website that people in my state can visit create jurisdiction? No. Accessibility is not targeting. Most circuits require something more: sales into the state, forum-specific content, or deliberate cultivation of forum users.

What about one test purchase by my own investigator? The Seventh and Ninth Circuits have found that sufficient where the seller operated an interactive store and shipped into the forum. Other courts are more skeptical. Document additional forum sales if you can.

Can I sue a Chinese seller in federal court at all? Often yes. Jurisdiction is frequently available on a direct-sales theory or under Rule 4(k)(2), and service can proceed by email under Rule 4(f)(3). Collection is a different problem, which is why asset freezes and marketplace-account relief matter so much.

We are registered to do business in twelve states. Are we now subject to suit in all of them? Probably not, but check. Mallory upheld jurisdiction where the registration statute expressly required consent to general jurisdiction. Most statutes do not. Watch for legislative changes.

What is the difference between personal jurisdiction and venue? Jurisdiction is the court's power over the defendant; venue is which of the courts with power is the proper place. They are analyzed separately, and a case can satisfy one and fail the other. Patent venue is especially restrictive; see Comprehensive Guide to Patent Infringement Litigation.

Can a forum selection clause fix all this? Largely, yes, between the contracting parties. A valid clause consenting to jurisdiction in a chosen forum is generally enforced. That is one of the most valuable things a well-drafted contract does. See Website Terms of Service and Online Contract Formation.

If the court dismisses for lack of jurisdiction, do I have to start over? Not necessarily. Ask for transfer under 28 U.S.C. § 1406(a) or § 1631 in the alternative, which preserves the filing date for limitations purposes. Always plead the alternative request in your opposition.

Closing thought

The Supreme Court's personal jurisdiction cases of the last fifteen years have moved in two directions at once. General jurisdiction narrowed dramatically, so that a defendant is now suable everywhere only where it is at home. Specific jurisdiction, after a period of tightening in Walden and Bristol-Myers Squibb, loosened somewhat in Ford Motor, which recognized that requiring a traceable causal chain would immunize national marketers from suit in the markets they cultivate.

The synthesis that emerges is about targeting. Courts ask whether the defendant chose this place, in some meaningful commercial sense, and whether the dispute belongs to that choice. That framing handles websites reasonably well once you stop asking about interactivity and start asking about currency, shipping, language, advertising, and sales.

For litigators, the practical takeaway is that jurisdiction is an evidentiary problem long before it is a doctrinal one. The party that shows up with sales records, shipping labels, ad-targeting settings, and analytics usually wins, and the party that shows up with adjectives usually does not.

Related articles

This article is provided for general informational purposes and does not constitute legal advice. Personal jurisdiction doctrine varies meaningfully among circuits and states. Consult qualified litigation counsel about any particular defendant or forum.