What Is an Intellectual Property Demand Letter?
An intellectual property demand letter — often called a cease and desist letter — is a formal notice to a person or business that is using your intellectual property without authorization. This covers four main categories: copyright infringement (unauthorized copying of creative works), trademark infringement (unauthorized use of brand names, logos, or slogans), patent infringement (unauthorized use of patented inventions), and trade secret misappropriation (unauthorized use of confidential business information).
IP demand letters serve as the first step in enforcing your rights and are often required before filing suit. Many IP disputes are resolved at the demand letter stage because the infringer may not have realized they were violating your rights, or the threat of statutory damages makes settlement attractive.
Legal Context and Your Rights
Copyright Protection
- Automatic protection: Copyright exists from the moment a work is created and fixed in tangible form. Registration is not required for ownership but is required before filing a federal lawsuit.
- Statutory damages: For registered works, you can elect statutory damages of $750 to $30,000 per work infringed, or up to $150,000 per work for willful infringement, instead of proving actual damages.
- DMCA takedowns: For online infringement, you can file a Digital Millennium Copyright Act takedown notice with the hosting platform to have infringing content removed quickly.
- Attorney's fees: Registration before infringement (or within 3 months of publication) makes you eligible for attorney's fees if you prevail.
Trademark Protection
- Likelihood of confusion: The key test is whether consumers are likely to be confused about the source of goods or services.
- Dilution: Famous marks are protected against dilution even without confusion.
- Federal registration benefits: A registered trademark (indicated by the symbol) provides nationwide priority, a presumption of validity, and the ability to recover treble damages and attorney's fees for counterfeiting.
Patent Protection
- Exclusive rights: A patent gives you the right to exclude others from making, using, selling, or importing your invention for 20 years from the filing date.
- Notice requirement: You should mark your products with the patent number. Without marking, you may only recover damages from the date the infringer received actual notice.
- Treble damages: Courts can award up to three times the actual damages for willful patent infringement.
What to Include in Your Demand Letter
Your IP Rights
- A description of the intellectual property at issue
- Your ownership claim, including registration numbers, dates, and filing information
- The scope of your rights (geographic, temporal, subject matter)
The Infringement
- A specific description of how the other party is infringing
- Evidence of the infringement (screenshots, product comparisons, URLs, purchase records)
- The date you first discovered the infringement
- Whether the infringement is ongoing
The Demand
- Immediate cessation of all infringing activity
- Removal or destruction of infringing materials
- An accounting of profits derived from the infringement
- Compensation for damages you have suffered
- Written assurance that the infringement will not resume
- A compliance deadline of 10 to 15 days
- A warning that you will pursue all available legal remedies including statutory damages, injunctive relief, and attorney's fees
Key Elements Specific to IP Infringement
- Prove ownership clearly: Attach copies of your copyright or trademark registration certificate, patent grant, or other proof of ownership. For unregistered copyrights, include evidence of creation such as original files with metadata, publication records, or draft history.
- Document the infringement thoroughly: Take timestamped screenshots of online infringement, purchase samples of infringing products, and preserve all evidence. Use the Wayback Machine to capture web pages that may be changed or removed.
- File a DMCA takedown simultaneously: For copyright infringement on websites or platforms, file a DMCA takedown notice with the hosting provider at the same time you send the demand letter. This creates immediate practical relief while the legal process proceeds.
- Address willfulness: If the infringer knew about your IP rights (for example, you have a well-known trademark or they were a former licensee), state this clearly. Willful infringement increases damages significantly.
- Be specific about remedies: Rather than making a vague demand for compensation, specify whether you want a licensing fee, damages calculated based on the infringer's profits, or statutory damages. This gives the infringer a clear path to resolution.
Timeline Expectations
- Day 1: Send the demand letter via certified mail. For online infringement, also file a DMCA takedown with the hosting platform.
- Days 3-7: DMCA takedowns are typically processed within 1 to 3 business days. The infringer receives your demand letter.
- Days 10-15: The compliance deadline arrives. Most infringers who intend to cooperate respond within this window.
- Day 15-30: If no compliance, consult with an IP attorney about filing suit
- Days 30-60: File a complaint in federal court if necessary
When to Escalate to Court
Pursue litigation if:
- The infringer refuses to stop despite your demand
- The infringer contests your ownership or claims fair use without merit
- The infringement is causing significant ongoing harm to your business
- You need injunctive relief to prevent irreparable harm
- The potential damages justify the cost of litigation
IP litigation can be expensive, but the availability of statutory damages and attorney's fees in copyright and trademark cases makes many claims economically viable. Many IP attorneys offer initial consultations at no charge and may take strong cases on contingency or partial contingency.