A letter of request, also called a letter rogatory, is a formal document that a court in one country sends to a court in another country asking for help with a legal matter. The three usual jobs are taking testimony from a witness abroad, obtaining documents or physical evidence held overseas, and serving legal papers on someone in a foreign country. No court has power outside its own borders, so this mechanism fills the gap. The whole system runs on judicial comity: courts cooperate voluntarily out of respect for each other’s sovereignty, not because they are compelled to.
What It Can and Cannot Be Used For
Letters of request exist to solve one practical problem. A lawsuit in one country needs something only a foreign court can compel, so the requesting court asks, the foreign court acts, and the results come back the same way. Testimony, documents, physical evidence, and service of process are the typical items.
Two boundaries catch litigants off guard. First, under the Hague Evidence Convention the matter must be civil or commercial. Criminal prosecutions and tax disputes fall outside the treaty entirely.1HCCH. Convention of 18 March 1970 on the Taking of Evidence Abroad in Civil or Commercial Matters Second, Article 23 of the convention lets any member country declare that it will refuse letters aimed at broad, American-style pre-trial document discovery. Many countries have filed exactly that declaration. A U.S. litigant who sends a sweeping discovery request to most European or Asian countries should expect it to be rejected. Requests have to be narrowly tailored to specific documents or named witnesses, not open-ended searches.
The Statutes and Treaty That Govern the Process
On the U.S. side, two federal statutes do the work. 28 U.S.C. § 1781 authorizes the Department of State to receive letters rogatory from foreign courts and transmit them to the proper U.S. authority, and to send U.S.-issued letters out to foreign courts. The statute also permits direct court-to-court transmission, though the diplomatic channel remains the default for countries that require it.2Office of the Law Revision Counsel. 28 U.S. Code 1781 – Transmittal of Letter Rogatory or Request
28 U.S.C. § 1782 runs the other direction. It allows any U.S. federal district court to order a person within its district to give testimony or produce documents for use in a foreign proceeding. The foreign tribunal can apply through a letter rogatory, or any “interested person,” including the foreign litigant, can file directly. Unless the order says otherwise, the Federal Rules of Civil Procedure govern, and legally applicable privileges still protect against compelled disclosure.3Office of the Law Revision Counsel. 28 USC 1782 – Assistance to Foreign and International Tribunals and to Litigants Before Such Tribunals
The multilateral treaty is the Hague Evidence Convention, formally the Convention of 18 March 1970 on the Taking of Evidence Abroad in Civil or Commercial Matters. It standardizes what the letter must say and requires each member to designate a Central Authority to receive incoming requests.1HCCH. Convention of 18 March 1970 on the Taking of Evidence Abroad in Civil or Commercial Matters For countries outside the convention, requests move through customary international law and diplomatic channels, which is slower and less predictable.
What the Letter Has to Contain
Article 3 of the Hague Evidence Convention lays out the required contents. The letter has to identify the court making the request and the foreign authority expected to execute it, the full names and addresses of the parties and their representatives, a summary of the case and claims sufficient for the foreign judge to understand why help is needed, and the specific evidence sought. For witness examinations that means names, addresses, and either the questions themselves or at minimum the subject matter. For documents or property, it means descriptions precise enough to identify them. If the requesting court needs testimony under oath or wants a particular method of examination used, the letter has to say so.
The convention itself does not require legalization or an apostille on the letter. Some non-convention countries do.4U.S. Department of Justice. Convention on the Taking of Evidence Abroad in Civil or Commercial Matters Check the specific receiving country’s requirements before sending.
Precision matters more here than at any other stage. A vague evidence description, an incomplete witness address, or missing questions give the Central Authority grounds to send the letter back. A round trip can take months, so a drafting error is expensive.
How the Request Travels and Gets Executed
Under the Hague Evidence Convention, the letter goes directly from the issuing court to the Central Authority of the country where the evidence is. The Central Authority checks the letter against the convention’s requirements. If it passes, the Central Authority forwards it to whichever local court or judicial officer has jurisdiction to carry it out. If there is a problem, the Central Authority must notify the requesting court and explain the specific objection. If the request arrives at an authority that cannot execute it, that body must pass it to the right one inside the same country rather than send it back.4U.S. Department of Justice. Convention on the Taking of Evidence Abroad in Civil or Commercial Matters
When the receiving country is not a Hague member, a U.S. request usually routes through the State Department. The requesting party submits the letter, translations, and a fee deposit to the Office of the Legal Adviser, which sends the package to the U.S. Embassy in the foreign country for delivery through diplomatic channels.5Foreign Affairs Manual. 7 FAM 930 – Compulsion of Evidence
Execution happens under the foreign court’s own procedures. The foreign judge may summon a witness, order records produced, or oversee whatever judicial act the letter calls for. Article 10 of the convention lets the foreign authority use its ordinary domestic compulsory measures, so a witness who ignores a summons faces the same penalties as in a local case.4U.S. Department of Justice. Convention on the Taking of Evidence Abroad in Civil or Commercial Matters The results return through the same channel.
How Long It Takes and What It Costs
Plan on a year or more. The State Department warns that execution of letters rogatory may take that long.6U.S. Department of State. Preparation of Letters Rogatory Diplomatic channels are slow by nature, and once the letter reaches the foreign court it competes with that court’s regular docket. Treat the letter of request as the longest lead-time item in the case.
Costs stack up. The State Department charges $2,275 to process a letter rogatory or a Foreign Sovereign Immunities Act judicial assistance case; that fee covers the seal, certificate, and return of executed documents.7eCFR. 22 CFR 22.1 – Schedule of Fees It does not cover translations, foreign court fees, or witness expenses abroad. Translation alone for a complex request can run into the thousands. Hiring a local attorney in the foreign country to shepherd the request through adds cost but often cuts the timeline.
Why a Request Can Be Refused
A foreign court does not have to execute every letter it receives. Under the Hague Evidence Convention, grounds for refusal include failure to meet the Article 3 content requirements or the Article 4 language and translation rules, a requested act that falls outside the judicial functions of the receiving country’s courts, prejudice to the sovereignty or security of that country, and the Article 23 declaration against pre-trial document discovery.
A witness can also invoke a privilege or duty to refuse to give evidence under either the law of the receiving country or the requesting country. That is not a refusal by the court, but the requesting party ends up with nothing all the same. When a request is refused, the Central Authority must notify the requesting court and explain. Technical defects can be fixed and the letter resubmitted, though the timeline resets.
Faster Alternatives Worth Considering First
Because letters of request are slow and expensive, experienced practitioners look for other routes first. The State Department itself recommends checking its country-specific judicial assistance pages, since options like service by mail, hiring a foreign attorney to petition the foreign court directly, or arranging a voluntary deposition may be available.6U.S. Department of State. Preparation of Letters Rogatory
The Hague Evidence Convention itself offers alternatives in Chapters II and III. A diplomatic officer or consular agent can take evidence from their own nationals abroad without compulsion and without a letter of request. With the host country’s permission, they can also examine host-country nationals or third-country nationals. A court can appoint a commissioner to take evidence abroad on similar terms.4U.S. Department of Justice. Convention on the Taking of Evidence Abroad in Civil or Commercial Matters These routes skip the Central Authority and can save months. They only work when the witness cooperates voluntarily. If you need compulsion, the formal letter of request is the only path.
For service of process specifically, the Hague Service Convention provides a separate and generally faster framework. When both countries are members of it, use that treaty’s channels rather than a letter rogatory.
When the United States Is on the Receiving End
Foreign courts and foreign litigants often need evidence from someone in the United States. Section 1782 lets any U.S. federal district court order a person within its jurisdiction to testify or produce documents for use in a foreign proceeding. The foreign tribunal can send a letter rogatory, or an interested person, usually the foreign litigant, can apply directly to the district court.3Office of the Law Revision Counsel. 28 USC 1782 – Assistance to Foreign and International Tribunals and to Litigants Before Such Tribunals
The district court has broad discretion. It can adopt the foreign country’s procedural rules for the examination, appoint someone to administer oaths and take testimony, and shape the scope of production. Without a specific direction in the order, the Federal Rules of Civil Procedure apply. Privilege is the firm limit: no one can be compelled to produce evidence a legally applicable privilege protects. Section 1782 also preserves the right of anyone in the United States to cooperate voluntarily with a foreign proceeding without any court order at all.