---
title: "Prepare a cease-and-desist letter for trademark or patent infringement"
url: "https://ailawframework.com/practice/intellectual-property-patents-trade-marks-copyright-designs/draft-a-cease-and-desist-letter-for-ip-infringement/united-states"
type: "task_jurisdiction_version"
site: "AI Law Framework"
id: "A23-A20260923-2-US"
practice_area: "Intellectual Property — Patents, Trade Marks, Copyright, Designs"
tier: "red"
lawyer_review: "required"
jurisdictions: ["US"]
last_reviewed: "2026-10-22"
---

# Prepare a cease-and-desist letter for trademark or patent infringement

> Index the registration or patent, the claim chart and the product pins. Write no sentence of the letter.

Canonical page: https://ailawframework.com/practice/intellectual-property-patents-trade-marks-copyright-designs/draft-a-cease-and-desist-letter-for-ip-infringement/united-states  
Last reviewed: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

| Fact | Value |
| --- | --- |
| Practice area | [Intellectual Property — Patents, Trade Marks, Copyright, Designs](https://ailawframework.com/practice/intellectual-property-patents-trade-marks-copyright-designs.md) |
| Human involvement | Red: Lawyer writes; AI may check, clarify or collect data |
| How AI is used | Index the registration or patent, the claim chart and the product pins. Write no sentence of the letter. |
| What the lawyer must review | You write and sign the letter. A registered-mark demand is grounded in 15 U.S.C. § 1114, and a false designation or false sponsorship demand in § 1125(a). A patent demand is grounded in 35 U.S.C. § 271. Check every registration and patent number on the official record. If the letter becomes a paper filed at the USPTO, 37 CFR § 11.18 is your certificate and you insert your own signature. Opinion 512: you do not send generated allegations you have not checked. |
| Written for | United States |
| Applies to | [Draft a cease-and-desist letter for IP infringement](https://ailawframework.com/practice/intellectual-property-patents-trade-marks-copyright-designs/draft-a-cease-and-desist-letter-for-ip-infringement.md) |

## Checking plan

- What the AI does: Index the registration or patent, the claim chart and the product pins. Write no sentence of the letter.
- Basis: Checked against the linked sources on 22 October 2026. Confirm the current instrument before reliance.

## Notes

- A demand that overstates the registration, or that threatens a claim you have not investigated, is your letter once you sign it.
- Design patents are USPTO patents under title 35. There is no Designs Act 2003 analogue.

## Sources

- [15 U.S.C. § 1114 (remedies for infringement of a registered mark)](https://www.law.cornell.edu/uscode/text/15/1114) (checked 2026-10-22)
- [15 U.S.C. § 1125 (false designations of origin and false descriptions)](https://www.law.cornell.edu/uscode/text/15/1125) (checked 2026-10-22)
- [35 U.S.C. § 271 (infringement of patent)](https://www.law.cornell.edu/uscode/text/35/271) (checked 2026-10-22)
- [37 CFR § 11.18 (signature and certificate for correspondence filed in the Office)](https://www.law.cornell.edu/cfr/text/37/11.18) (checked 2026-10-22)

## Forms and precedents for this task

| Form or precedent | Kind | AI level | Summary |
| --- | --- | --- | --- |
| [DMCA notice of claimed infringement](https://ailawframework.com/precedents/intellectual-property-patents-trade-marks-copyright-designs/us-dmca-takedown-notice.md) | Notice | Red | Checklist and cover fields for a notice of claimed infringement under 17 U.S.C. § 512(c)(3). It identifies the work, the location and the designated agent.… |
| [Trademark cease and desist letter](https://ailawframework.com/precedents/intellectual-property-patents-trade-marks-copyright-designs/us-trademark-cease-and-desist.md) | Letter | Yellow | Letter asking a person to stop a use that may infringe a trademark or create a false designation of origin. It identifies the mark and the registration to be checked.… |

Signed-in accounts can read the full text of each one.

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*