Cease-and-Desist Letters: Strategy, Risk, and Declaratory Judgment

A cease-and-desist letter looks like correspondence and behaves like a filing. It can create federal jurisdiction that lets the recipient sue the sender first. It can start damages and willfulness clocks. It can trigger a duty to preserve evidence in the sender's own files. And if it goes to the wrong audience — a distributor, a marketplace, a customer — it can generate a counterclaim that has nothing to do with the original right.

None of that argues against sending letters. Most disputes are still resolved by one. It argues for treating the draft as a strategic document with a known set of consequences, rather than as a template with the names changed.

How a letter creates a courthouse

The Declaratory Judgment Act lets a party facing a real dispute ask a court to declare its rights rather than wait to be sued. Since the Supreme Court's 2007 decision in MedImmune v. Genentech, the test is not whether the recipient had a reasonable apprehension of an imminent suit. It is whether, under all the circumstances, there is a substantial controversy between parties with adverse legal interests, of sufficient immediacy and reality to warrant relief. The Federal Circuit applied that broader standard to demand correspondence shortly afterward, and the practical result is that a letter which identifies specific patents, specific accused products, and a demand for a licence or a stop can be enough.

The stakes are forum. A declaratory action filed by the recipient generally proceeds in the recipient's home district, before a judge and jury pool the sender did not choose, on a schedule the sender did not set. For patent cases, where the sender might otherwise have selected a venue from a comparatively narrow post-2017 set of options, that reversal is expensive. It also affects the second forum: a sender that files its own declaratory action about validity gives up the ability to bring an inter partes review, a trade explained in the PTAB brief.

The table describes a trade, not a right answer. A sender who genuinely intends to file suit within weeks should usually write the strong letter and accept the declaratory risk, because it is buying notice, willfulness evidence, and settlement pressure. A sender who is exploring, unfunded, or unsure of its chain of title should write the soft letter or none at all.

What a letter buys the sender

The upside is real and specific to the right being asserted.

• Patent notice. Where the patentee or its licensees sell products covered by the patent and have not marked them, damages generally do not begin until actual notice. A letter identifying the patent and the accused product supplies that notice — see marking and the damages consequence.
• A willfulness record. Enhanced damages depend on the infringer's conduct after it knew of the patent. Documented notice, and the recipient's response, become the core of that record.
• Trademark priority and control. A registrant that tolerates confusingly similar uses weakens its own position over time. Consistent, documented enforcement is part of maintaining a mark's scope.
• Trade secret preservation. Reasonable measures to protect secrecy include acting when a former employee or counterparty misuses information. A prompt letter is evidence of those measures.
• A settlement anchor. Most matters resolve in a licence. The letter sets the first number, the field, and the term, and it should be drafted with the eventual agreement in mind — the levers are set out in the licence brief.
• Information. A well-drafted letter asks questions the answer to which either supports or dissolves the claim before anyone spends money on a complaint.

Risks that have nothing to do with forum

• Statements to the recipient's customers. Telling a distributor or retailer that a supplier's product infringes is a communication to the market. It can support tortious interference and unfair competition claims, and federal enforcement is generally protected only where the assertion is made in good faith. A sender with a weak or unexamined position is most exposed exactly where the letter does the most commercial damage.
• False advertising exposure. Public or semi-public claims about a competitor's product can be tested under Lanham Act § 43(a). The standards are the same ones covered in substantiation and false advertising exposure.
• Fee-shifting. Both the Patent Act and the Lanham Act allow attorneys' fees in exceptional cases. A campaign of demands built on claims the sender never analysed is the fact pattern those provisions were kept for.
• State bad-faith assertion statutes. Many states have enacted laws targeting bad-faith patent demand letters, typically keyed to whether the letter identifies the patent, the accused product, and the basis for the claim. Requirements vary by state; a national mailing has to satisfy the strictest one that applies.
• Platform and marketplace escalation. Sending a copyright takedown alongside a letter engages a separate statutory process with its own misrepresentation liability, covered in takedown and counter-notice procedures.
• Ethical limits. Threatening criminal prosecution or regulatory referral to gain advantage in a civil matter is restricted by professional conduct rules in most states.

Check before sending: confirm the chain of title to the asserted right, that all maintenance or renewal filings are current, and that the entity signing the letter actually owns or exclusively licenses what it is asserting. Standing failures surface in the declaratory action, not in the letter.

The work that belongs before the draft

1. Confirm the right

   Registration status, assignment records, expiry and maintenance dates, and whether an exclusive license puts enforcement rights somewhere other than where you assume. Recorded assignments are searchable through the Office.

2. Analyse the claim

   For patents, a claim chart against the accused product. For trademarks, a likelihood-of-confusion analysis with actual market evidence. For copyright, ownership, registration, access, and a documented view on fair use.

3. Test your own weaknesses

   Search for invalidating art, prior rights, or non-use problems in your own registration. The recipient will, and its answer will be a counterclaim.

4. Open a preservation file

   Issue a litigation hold covering product development, marketing, licensing, and the analysis behind the letter itself. Sending a demand is the clearest possible signal that litigation is anticipated.

5. Choose the forum consciously

   Decide where you would file, whether personal jurisdiction over the recipient exists there, and whether the applicable venue rules permit it. If the answer is unfavourable, consider filing first and serving with the letter.

6. Decide the audience

   Recipient only, or recipient plus channel partners? The second choice multiplies both pressure and exposure and should be a deliberate decision recorded in the file.

Receiving one

The recipient's first move is not a reply. It is preservation: stop routine deletion, identify custodians, and freeze the relevant product and marketing records. The second move is a fast, honest assessment of the claim, because the response strategy depends entirely on whether the assertion has merit.

If the claim is weak and the sender is aggressive, a declaratory action can seize the forum and reset the negotiation — provided the letter created a controversy concrete enough to support jurisdiction. If the claim has merit, silence is the expensive option: for patents, damages and willfulness exposure keep accruing while nothing happens. A prompt reply asking for claim charts, registration details, and the basis for the assertion costs little and often ends thin claims outright.

Design-around and product-change options should be evaluated in parallel rather than after negotiations fail. So should insurance: some general liability and media policies cover advertising injury, and notice obligations under those policies typically run from the moment a claim is asserted, not from the moment suit is filed.

Questions the desk gets

Can we avoid declaratory judgment risk by marking the letter "for settlement purposes only"?

Not reliably. Settlement labels affect admissibility of statements for some purposes; they do not change whether an actual controversy exists between the parties. Courts look at the substance of the communication and the surrounding conduct. A safer route is to control content — discuss a portfolio and a licensing programme without identifying accused products — or to obtain a standstill agreement before substantive exchanges begin.

If we later give a covenant not to sue, does the declaratory case go away?

Often, but only if the covenant is broad enough. A covenant that covers the accused products, their reasonably foreseeable variants, past and future conduct, and the recipient's customers can eliminate the live controversy. A narrow covenant that leaves the door open on future versions usually does not, and the attempt can look tactical. Drafting it is not a two-sentence exercise.

Does a letter always start the willfulness clock?

It supplies knowledge of the patent, which is a precondition. Enhanced damages under the Patent Act remain discretionary and depend on the character of the infringer's behaviour, not on notice alone. A recipient that responds by obtaining an analysis and, where warranted, changing its product has a very different record from one that files the letter and continues unchanged.

How fast should a recipient reply?

Acknowledge quickly, substantively respond deliberately. A short letter confirming receipt, asking for the specific basis of the claim, and noting that the matter is under review preserves the relationship without conceding anything. Two to four weeks for the substantive answer is normal in commercial disputes. What is not safe is silence past a stated deadline in a matter where damages accrue daily.

Is a letter necessary before filing suit?

No federal rule requires it for patent, trademark, or copyright claims, and there are strategic reasons to skip it — including keeping the forum and avoiding a declaratory race. Contracts sometimes require notice and cure before suit, and some claims carry their own statutory notice steps, so check the agreement before assuming the choice is free.

Where the risk actually sits

The risk is not in sending a letter. It is in sending a strong letter you are not prepared to back, or a weak letter to an audience wide enough to cause commercial harm. Match the letter's temperature to your actual readiness: chain of title verified, claim analysed, forum chosen, preservation in place, budget approved for the complaint you may have to file next month.

Then decide the audience and the channel deliberately, keep everything you send consistent with what you would say in a pleading, and treat the file you build now as the first exhibit in the case. Related enforcement, licensing, and platform-procedure work sits on the Intellectual Property & Media desk. This brief is general information about federal practice, not legal advice about a specific dispute, and the declaratory-judgment consequences described here are a reason to take advice before a letter goes out rather than after.