What this toolkit is for and who should use it

An intellectual-property dispute rarely respects borders. The infringer ships from one country, sells on a platform headquartered in another, and holds assets in a third; the same patent family is litigated in the United States, the Unified Patent Court, the U.K., and China at once; a defendant cannot even be served without navigating a treaty and a foreign central authority. The legal machinery for each of these problems — service, jurisdiction, evidence, enforcement of judgments, and coordination of parallel suits — is distinct, procedurally exacting, and easy to get wrong in ways that are fatal to a case.

This toolkit maps that machinery. It walks an international IP dispute from the initial assessment through the mechanics of serving a foreign defendant (with a deep focus on China, where most IP-defendant service problems arise), into jurisdiction and forum strategy, then global enforcement, cross-border evidence-gathering, recognition of foreign judgments, and the anti-suit injunction battles that now define standard-essential-patent litigation. At each stage it links to the mclaw.io article or checklist that explains the procedure and to the convention, statute, or case that controls it.

It is written for litigators handling their first foreign defendant, in-house counsel coordinating a multinational enforcement campaign, and IP owners deciding where and how to fight. A toolkit orients; the linked resources and tailored advice do the work.

Roadmap at a glance

  1. Assess the dispute — claims, defendants, assets, and where leverage actually lies.
  2. Serve abroad — the Hague Service Convention, central authorities, and the China problem.
  3. Establish jurisdiction — personal jurisdiction over foreign defendants in U.S. courts.
  4. Manage parallel proceedings and forum — first-to-file races, forum non conveniens, and venue strategy.
  5. Coordinate global enforcement — multi-jurisdiction patent and trademark campaigns.
  6. Gather evidence abroad — the Hague Evidence Convention and 28 U.S.C. § 1782.
  7. Enforce foreign judgments — recognition, reciprocity, and asset reach.
  8. Deploy anti-suit injunctions and FRAND tools — the injunction wars and their counters.

The stages are sequential for a single case but interactive in a campaign: where you can serve, sue, and collect should inform where you choose to file.

Stage 1 — Assess the dispute

Before filing anywhere, assess realistically. Map the claims (patent, trademark, copyright, trade secret) and the defendants (manufacturers, distributors, platforms, end users), then ask where each defendant can be served, where it is subject to jurisdiction, where its assets are, and where a judgment would actually be collectible. International litigation is expensive and slow; the threshold question is whether the contemplated forum can both reach the defendant and deliver an enforceable remedy. Damages data and the typical cost-and-outcome profile of IP litigation help calibrate expectations and settlement posture from the outset.

Resources

Stage 2 — Serve abroad: the Hague Convention and the China problem

Service on a foreign defendant is the first hard procedural hurdle, and the Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents governs whenever the defendant is in a signatory state and its address is known. The primary channel is transmission through the destination country's designated Central Authority, which serves the documents under its own law and returns a certificate. Each country may object to alternative methods (such as service by mail under Article 10), so the available methods depend on that country's reservations.

China is where most IP litigators encounter the sharpest problems. China is a party to the Convention but has objected to the Article 10 alternatives, so service must go through its Central Authority (the Ministry of Justice), documents must be translated into Chinese, and the process commonly takes many months to a year or more. Building service time into the litigation schedule, preparing complete and correctly translated packets, and considering whether any defendant can be served domestically (for example, a U.S. subsidiary or agent) are essential. Note the Supreme Court's decision in Water Splash, Inc. v. Menon (2017), which confirmed that the Convention does not itself prohibit service by mail where the destination state has not objected and the forum's law authorizes it — important for many non-objecting countries, though not a route into China.

Resources

Illustration. A U.S. brand sues a Shenzhen manufacturer for counterfeiting. Counsel cannot serve by mail because China objected to Article 10, so the complaint and exhibits are translated into Chinese and transmitted to the Ministry of Justice; the team calendars a 6–12 month service window and, in parallel, names a U.S.-based reseller it can serve immediately to keep the case moving — illustrating why service strategy shapes the whole timeline.

Stage 3 — Establish jurisdiction over foreign defendants

Serving a defendant does not establish that a U.S. court may decide the case against it. Personal jurisdiction over a foreign defendant turns on minimum contacts with the forum and on due-process fairness, analyzed through general jurisdiction (essentially "at home" in the forum) and specific jurisdiction (claims arising from forum-directed conduct). In IP cases, the relevant contacts are often sales into the forum, interactive websites, distribution channels, and targeted infringement. Federal Rule 4(k)(2) can supply nationwide jurisdiction over a foreign defendant on federal claims when no single state's courts would have jurisdiction but the defendant has sufficient contacts with the United States as a whole — a useful tool against defendants who spread their contacts thinly across many states.

Resources

Stage 4 — Manage parallel proceedings and forum selection

The same dispute is often litigable in several countries at once, which raises forum strategy and the management of parallel proceedings. Choosing where to file weighs speed (some forums issue injunctions or decisions much faster), available remedies (injunctions, damages, customs measures), the strength of local courts on the asset class, and enforceability. A defendant may respond with a declaratory-judgment action or invalidity proceeding in a friendlier forum, producing a first-to-file race. U.S. courts may decline jurisdiction on forum non conveniens grounds when an adequate alternative forum exists and private/public-interest factors favor it, and may stay or coordinate proceedings to avoid conflicting outcomes. Plan the global sequence deliberately rather than litigating reactively in each country.

Resources

Stage 5 — Coordinate global patent and trademark enforcement

Global enforcement is a campaign, not a single case. Patents and trademarks are territorial: a U.S. patent stops infringement in the United States only, so a multinational program means parallel filings and suits in each market that matters, coordinated for consistent claim positions, settlement leverage, and supply-chain disruption. The U.S. International Trade Commission offers a fast, injunction-like exclusion remedy against infringing imports under Section 337 that complements district-court litigation. Trademark enforcement coordinates national registrations (often through the Madrid system), customs recordation in each jurisdiction, and platform takedowns. The high-profile "patent wars" of the past decade are the case studies for how cross-border campaigns unfold and where they break down.

Resources

Stage 6 — Gather evidence abroad

Evidence located abroad is reachable through two principal channels, and choosing between them is strategic. The Hague Evidence Convention provides a formal letter-of-request procedure routed through a foreign central authority — sometimes the only route a foreign court will honor, but slow and constrained by the destination state's reservations (many states limit pre-trial document discovery). The Supreme Court in Société Nationale Industrielle Aérospatiale v. U.S. District Court held the Convention is not the exclusive means of obtaining evidence abroad, so U.S. courts may still order discovery under the Federal Rules from parties subject to their jurisdiction, applying comity factors. Running the opposite direction, 28 U.S.C. § 1782 lets litigants in foreign proceedings obtain discovery from persons found in the United States — a powerful tool, though ZF Automotive US, Inc. v. Luxshare, Ltd. (2022) held that § 1782 does not reach private commercial arbitration. Authenticating foreign and web-based evidence for use in U.S. court is a recurring practical task.

Resources

Stage 7 — Enforce foreign judgments

A judgment is only as valuable as your ability to collect it. Enforcing a foreign judgment in the United States is generally a matter of state law — most states follow the Uniform Foreign-Country Money Judgments Recognition Act — under which a final, conclusive money judgment is recognized unless a defense applies (lack of jurisdiction, fraud, lack of due process, public policy). Recognition of U.S. judgments abroad is governed by the destination country's law and varies widely; some jurisdictions require reciprocity, and many will not enforce non-money or punitive awards. The practical sequence is to locate assets, confirm the foreign court can/will recognize the judgment (or vice versa), and pursue domestication followed by ordinary collection. PACER and CourtListener help track the U.S. side of multinational dockets.

Resources

Stage 8 — Deploy anti-suit injunctions and FRAND tools

The most contested frontier of cross-border IP litigation is the anti-suit injunction, especially in standard-essential-patent disputes. A court in one country may enjoin a party from pursuing or enforcing parallel litigation elsewhere; courts in other countries respond with anti-anti-suit injunctions, producing escalating jurisdictional clashes over who gets to set a global FRAND rate. Some courts (notably in China and the U.K.) have asserted authority to set worldwide FRAND terms, which incentivizes racing to a favorable forum. This area is genuinely unsettled and fast-moving — outcomes vary by jurisdiction and year, so treat anti-suit strategy as a live, expert-driven question rather than a settled playbook, and coordinate it tightly with the global filing sequence from Stage 4.

Resources

Putting it together: a cross-border dispute in one page

Begin with a clear-eyed assessment of where the defendant can be served, sued, and collected against. Build service abroad — and the months it consumes in places like China — into the schedule from day one, and serve any domestically reachable defendant in parallel. Confirm jurisdiction (including Rule 4(k)(2)) before relying on a forum. Sequence parallel proceedings deliberately, anticipating declaratory and invalidity counter-suits and forum non conveniens motions. Coordinate a territorial enforcement campaign across courts, the ITC, customs, and platforms. Gather foreign evidence through the right channel — Hague letters, party discovery under comity, or § 1782 in the U.S. Plan for recognition and collection of any judgment from the outset. And treat anti-suit and FRAND-rate-setting as the live, jurisdiction-specific battleground it is. The unifying lesson: in cross-border IP litigation, procedure is strategy.

Master resource index

Articles

Checklists

Related toolkits

External & primary sources

This toolkit is general information, not legal advice. Treaty reservations, central-authority requirements, service timelines, and the law of anti-suit injunctions change and vary by jurisdiction — verify current requirements at the official sources and consult qualified counsel before relying on them.