How to Write a Cease and Desist Letter — and When Not to Send One

What the letter actually accomplishes

Four things, none of which is compulsion:

• It often works. A large share of infringement is careless rather than deliberate — a contractor who reused a photo, a competitor who did not search the register, a former employee who thinks the clause they signed does not apply. A specific, calm letter resolves most of those in a week.
• It starts the willfulness clock. Conduct that continues after notice is conduct a court can find deliberate, and deliberate infringement carries higher damages and, in some regimes, fee shifting. This is the single strongest reason to send one even when you expect it to be ignored.
• It preserves evidence. A letter that asks the recipient to hold all relevant documents and communications makes later deletion look much worse than it otherwise would.
• It shows you tried. Courts weighing an injunction, and juries weighing damages, notice whether the rights-holder behaved reasonably before filing.

What it is not: an injunction, a filing, or a document the other side signs. If you want an order that actually compels someone to stop, that comes from a judge, and getting one usually requires showing likelihood of success and irreparable harm.

The reason to think before sending one

This is the part most templates leave out, and it is the part that costs money.

A cease and desist letter asserting a trademark or a patent can create what the law treats as an actual controversy between the parties. Once that exists, the recipient does not have to wait for you. They can file a declaratory judgment action — a suit asking a court to declare that they do not infringe — and they will file it in a court convenient to them. You become the defendant. You litigate in their district, on their timetable, having chosen neither.

That risk scales with how aggressive and how specific about litigation the letter is. It is a real trade-off rather than a reason never to write: a letter vague enough to avoid all declaratory judgment exposure is usually also too vague to work. Which is why rights-holders with something serious at stake sometimes file first and send the letter afterwards, so the forum is settled before the conversation starts.

Defamation letters carry a different version of the same problem. Many states have anti-SLAPP statutes that let a defendant knock out a meritless suit early and recover fees, so a threat you cannot back can be expensive to follow through on. And letters demanding that something be taken down have a way of becoming the reason more people read it.

None of this argues for silence. It argues for sending a letter that is accurate, specific and proportionate — and for getting advice before you send one that asserts registered intellectual property or accuses someone of defamation.

Four claims, four different letters

"Cease and desist" describes the demand, not the legal theory. What you have to prove differs completely between them, and so does what the letter has to establish.

What goes in the letter

1. Your details, the date, and how the letter is delivered. Email plus certified mail with return receipt, and say so in the letter. Provable delivery is the whole point of the exercise.
2. A RE: line naming the right at issue. "RE: Unauthorized use of U.S. Trademark Registration No. 5,XXX,XXX (BRANDNAME)".
3. The right, established. One paragraph. Registration numbers, dates, the goods and services covered, or the contract and its date. If your right is unregistered, say what it is and how it arose rather than implying a registration you do not have.
4. The conduct, with evidence. Dates, URLs, listing numbers, account handles, screenshots referenced as exhibits. Specifics are what make the letter impossible to dismiss as a form letter.
5. Why the conduct infringes. Two or three sentences connecting the right to the conduct. Not a brief.
6. Numbered demands. Stop the specific conduct; remove or destroy specified material by a named date; confirm compliance in writing; where relevant, account for revenue earned. Numbered so compliance can be checked item by item.
7. A deadline. A calendar date, usually ten to fourteen days out, and an address for the response.
8. A preservation request. Ask the recipient to preserve all documents, communications and electronically stored information relating to the matter.
9. Consequences, stated once and flatly. What you will do if the deadline passes. Only what you will actually do.
10. A reservation of rights, and one signature. Nothing waives any right, no delay is a waiver, and the letter is not a complete statement of the facts or claims. No counter-signature line — this is a letter, not an agreement.

The DMCA takedown, which is usually faster

If the problem is your copyrighted material appearing on a platform — a marketplace, a social network, a host — a takedown notice under 17 U.S.C. § 512(c)(3) goes to the platform instead of the infringer, and platforms act on them because their own safe harbor depends on it. The statute prescribes the elements:

• A physical or electronic signature of someone authorized to act for the owner of the right
• Identification of the copyrighted work claimed to be infringed
• Identification of the infringing material, with enough information to locate it
• Your contact information
• A statement of good-faith belief that the use is not authorized
• A statement, under penalty of perjury, that the notice is accurate and that you are authorized to act

Two things to understand before you use it. First, § 512(f) makes anyone who knowingly and materially misrepresents that material is infringing liable for the damages, costs and attorney's fees caused — a takedown sent to silence a critic or take down a competitor is not a free move. Second, the recipient can file a counter-notification under § 512(g), which generally puts the material back within ten to fourteen business days unless you file suit. So the takedown route does not avoid the decision about litigating; it just brings it forward.

What never goes in the letter

• Threats of criminal prosecution, arrest, or a report to immigration, the IRS or a licensing board made to gain advantage in a civil dispute. Improper everywhere, unlawful in several states, and it converts your letter into the other side's exhibit.
• Rights you do not have. An implied registration you never obtained, a patent that has lapsed, a clause that your state does not enforce. It is checkable in minutes and it destroys the letter's credibility permanently.
• A dollar demand you have not thought through. Adding a number turns a cease-and-desist into a settlement demand, which is a different negotiation with different consequences. Decide deliberately which one you are sending.
• Insults, sarcasm, and capital letters used for volume. Everything here is read later by someone deciding which party was reasonable.
• Deadlines you will let pass. One unenforced deadline teaches the recipient that the next one is decorative too.

If you receive one

The instinct is to reply immediately or to delete everything. Both are mistakes.

1. Preserve, do not delete. The moment you are on notice, destroying relevant material stops looking like housekeeping and starts looking like spoliation. Keep the files, the messages and the drafts, including the ones you would rather not have.
2. Diarize the deadline, then stop. Note the date. Do not reply in the first hours, because the first reply tends to contain admissions the sender could not have proved.
3. Check whether the right exists. Trademark registrations are searchable at the USPTO, copyright registrations at the Copyright Office. A surprising number of letters assert rights that are unregistered, expired, owned by someone else, or narrower than the letter implies.
4. Assess honestly. Sometimes the sender is right, and the cheapest outcome is to comply quietly before it costs anything. Sometimes they are wrong, and there are defenses — fair use, independent creation, a license, an unenforceable clause, truth, opinion.
5. Get advice before responding substantively if the letter comes from a law firm, asserts registered intellectual property, or names a number. If you need time, a short reply acknowledging receipt and asking for a specific extension is almost always better than silence.

And notice what a cease and desist is not: a lawsuit. Receiving one means someone wants something. It does not mean anything has been filed, and it does not mean they will file.

Prevention, which is cheaper

Most of the letters people end up needing to send trace back to a document that never got written or that got written vaguely: an agreement that did not say who owned the work product, a collaboration with no confidentiality terms, a departing contractor with a non-solicit nobody drafted for the right state. Our guides to the clauses most contracts are missing, non-disclosure agreements and non-compete enforceability in 2026 cover the three that come up most. And if the dispute is about money rather than conduct, the letter you want is a demand letter, which is a different document entirely.

This article is general information about how contracts commonly work, not legal advice, and reading it does not create an attorney-client relationship. Laws differ by jurisdiction and change over time. Consult a licensed attorney in your jurisdiction before relying on any agreement.