The client stopped answering your invoice. Then you notice the work is live: your logo on their site, your photos in their ad, your code running in production. They are using what you built without paying for it. A cease and desist letter is the right next move, and it works because it names a second problem on top of the unpaid invoice: they are also infringing your rights.
Why a Cease and Desist, Not Just a Demand
A standard demand letter says "pay me." A cease and desist says "stop using my work, and pay me, or I file." When you never got paid, you generally still own what you made. That gives you a second lever most contractors do not realize they have.
The letter puts the client in a corner. They can pay the invoice and license the work, or they can strip it out of whatever they are running. Either outcome is better than the silence you are getting now. Our guide on copyright cease and desist letters covers the copyright angle in more depth if that is your main lever.
When This Angle Actually Fits
Not every unpaid invoice is a cease and desist. The letter fits when you can point to specific work the client is using without having paid for it. Examples:
- Design files, logos, or brand assets showing up on their site or storefront
- Photography or video in their marketing or product listings
- Code you wrote running on their production servers
- Copy or content you drafted published under their name
- Custom fabrication, signage, or installed work they refuse to pay for
If the work is purely labor (a repair, a service call, a cleanup) with nothing left to pull down, a standard demand letter for the unpaid invoice is the better tool.
What to Include in the Letter
A cease and desist letter for unpaid work has to cover seven things:
- Your full name, business name, and contact information
- The client's legal name and address (the entity that signed the contract)
- A description of the specific work, with dates and invoice numbers
- A clear statement that ownership did not transfer because payment was not made
- Where the client is currently using the work (URLs, addresses, publications)
- Two demands: stop using the work AND pay the outstanding balance by a deadline
- The consequence if the deadline passes: small claims filing, DMCA takedown, or both
Keep the tone flat and factual. No insults, no threats beyond the actual legal remedies you have. Judges and clients both discount emotional letters.
The Ownership Language That Does the Work
The strongest sentence in the letter is the one that ties ownership to payment. For most creative work in the U.S., copyright vests with the creator until it is assigned in writing. A contract that says "work product transfers on final payment" means what it says: no payment, no transfer.
Under the terms of our agreement dated [DATE], all rights, title, and interest in the deliverables listed on Invoice [NUMBER] remain with [YOUR NAME] until payment is received in full. As payment has not been made, your continued use of the work at [URL / LOCATION] constitutes unauthorized use and, where copyright applies, infringement.
If you never signed a contract, the same principle usually applies by default under copyright law for creative work, but the case is stronger with something in writing. Do not overstate the legal claim: say the use is unauthorized, not that they will lose in court.
How to Send It So It Sticks
Send the letter two ways: email with a PDF attached, and certified mail with return receipt to the client's registered business address. The email creates the timestamp. The certified mail creates the proof of delivery that a court wants to see.
Give a specific deadline, 10 to 14 days from the date on the letter. Shorter feels aggressive; longer lets the client stall. Attach a copy of the original invoice and any signed contract or estimate. Do not send drafts of your work as attachments; you have already delivered them.
If the work is on a public website or platform, screenshot every page where it appears, with the URL and date visible. Those screenshots become exhibits later.
What Happens After the Deadline
Most clients pay or take the work down within a week of receiving the letter. The ones who do not usually fall into two buckets: they think you are bluffing, or they have decided the money is worth the risk. Either way, you have three real options:
- File a DMCA takedown with the hosting provider or platform if the work is online. This is fast and often forces the client back to the table within days.
- File in small claims court for the unpaid invoice. The letter and the receipts become your evidence. Our small claims filing walkthrough covers the paperwork step by step.
- Talk to an attorney about a copyright infringement claim if the amounts are large or the work is registered with the U.S. Copyright Office. Registered work carries statutory damages that make the case worth an attorney's time.
Getting the Letter Written Without Guessing
The hard part is not knowing what to say. It is saying it in a way that sounds like it came from someone who will actually file. Wording that is too soft gets ignored. Wording that is too aggressive gets you accused of harassment. PaperHammer drafts all three escalating versions (polite, firm, final) with the ownership and cease and desist language built in, tied to your state's small claims limit. You fill in the details about the work and the client, and the PDF is ready in about five minutes for $19.