Cease and Desist Letter - Intellectual Property Infringement

Delaware Intellectual Property Updated September 4, 2026 Free Word and PDF

CEASE AND DESIST LETTER

Intellectual Property Infringement - Delaware

Federal IP Law, Delaware Deceptive Trade Practices Act (6 Del. C. § 2531), and Delaware Trademark Act (6 Del. C. § 3301)


PRIVILEGED AND CONFIDENTIAL

SENT VIA: ☐ Certified Mail, Return Receipt Requested ☐ Federal Express / Overnight Courier ☐ Email (with delivery/read receipt) ☐ Personal Service ☐ Other: [________________________________]


LETTERHEAD

[________________________________]
[Law Firm / Rights Holder Name]
[________________________________]
[Street Address]
[________________________________]
[City, State, ZIP]
[________________________________]
[Telephone]
[________________________________]
[Email]


Date: [__/__/____]

To:
[________________________________] ("Infringer")
[________________________________]
[Street Address]
[________________________________]
[City, State, ZIP]
Attn: [________________________________]

Re: IMMEDIATE CEASE AND DESIST - Unauthorized Use of Intellectual Property

Our Client: [________________________________] ("Rights Holder")

IP at Issue: [________________________________]


1. INTRODUCTION AND PURPOSE

Dear [________________________________]:

This firm represents [________________________________] ("Rights Holder") in the protection and enforcement of its intellectual property rights. We write to provide formal notice that [________________________________] ("Infringer") is engaging in activities that constitute infringement of our client's intellectual property in violation of federal law, Delaware statutory law, and common law.

This letter serves as:

  1. Formal notice of Rights Holder's IP ownership and Infringer's unauthorized activities
  2. Demand for immediate and complete cessation of all infringing conduct
  3. Litigation hold notice requiring preservation of all related evidence
  4. Notice that Rights Holder will pursue all available legal remedies without further warning if compliance is not achieved

Rights Holder expressly reserves all rights and remedies under federal law, the Delaware Deceptive Trade Practices Act (6 Del. C. § 2531 et seq.), the Delaware Trademark Act (6 Del. C. § 3301 et seq.), the Delaware Uniform Trade Secrets Act (6 Del. C. § 2001 et seq.), and common law.


2. RIGHTS HOLDER'S INTELLECTUAL PROPERTY

A. Trademark Rights

☐ Rights Holder owns the following federally registered trademark(s):

Mark Registration No. Registration Date Classes Status
[________________________________] [________________________________] [__/__/____] [____] Active
[________________________________] [________________________________] [__/__/____] [____] Active

☐ Rights Holder owns the following Delaware state trademark registration(s) under 6 Del. C. § 3301 et seq.:

Mark Registration No. Registration Date
[________________________________] [________________________________] [__/__/____]

☐ Rights Holder claims common law trademark rights based on continuous use since [________________________________].

B. Copyright Rights

☐ Rights Holder owns the following copyrighted work(s):

Work Type Registration No. Registration Date
[________________________________] [________________________________] [________________________________] [__/__/____]

C. Patent Rights

☐ Rights Holder owns the following United States Patent(s):

Patent Title Patent No. Issue Date Relevant Claims
[________________________________] [________________________________] [__/__/____] [________________________________]

Note: Delaware, particularly the U.S. District Court for the District of Delaware, is one of the nation's leading patent litigation venues. Many technology companies are incorporated in Delaware, establishing jurisdiction for patent claims.

D. Trade Secrets

☐ Rights Holder possesses trade secrets protected under the Defend Trade Secrets Act (18 U.S.C. § 1836) and the Delaware Uniform Trade Secrets Act (6 Del. C. § 2001 et seq.).


3. INFRINGEMENT - FACTUAL ALLEGATIONS

A. Nature of Infringement

Trademark Infringement: Infringer uses a mark identical or confusingly similar to Rights Holder's mark(s) in connection with:

  • [________________________________]
  • Specific infringing uses: [________________________________]
  • Likelihood of confusion exists under the Third Circuit's Interpace factors because: [________________________________]

Copyright Infringement: Unauthorized reproduction, distribution, display, performance, or creation of derivative works:

  • Infringing material: [________________________________]
  • Method: ☐ Direct copying ☐ Distribution ☐ Public display ☐ Digital reproduction ☐ Derivative work ☐ Other: [________________________________]
  • Location: [________________________________]

Patent Infringement: Unauthorized making, using, selling, offering to sell, or importing:

  • Infringing product/process: [________________________________]
  • Infringed claim(s): [________________________________]
  • Type: ☐ Direct ☐ Induced (35 U.S.C. § 271(b)) ☐ Contributory (35 U.S.C. § 271(c))

Trade Secret Misappropriation: Unauthorized acquisition, disclosure, or use:

  • Trade secret: [________________________________]
  • Means: [________________________________]

Deceptive Trade Practices (6 Del. C. § 2532): Including but not limited to:

  • Passing off goods or services as those of another (§ 2532(a)(1))
  • Causing likelihood of confusion as to source, sponsorship, or affiliation (§ 2532(a)(2))
  • Using deceptive representations in connection with goods or services (§ 2532(a)(5))
  • Engaging in other conduct creating a likelihood of confusion or misunderstanding (§ 2532(a)(12))

B. Evidence

☐ Screenshots of infringing websites, digital content
☐ Photographs of infringing physical products
☐ Purchase receipts or order confirmations
☐ Marketing and advertising materials
☐ Domain registrations or social media profiles
☐ Consumer confusion evidence
☐ Other: [________________________________]

Evidence attached as Schedule B.

C. Duration and Scope

Ongoing since approximately [________________________________].

  • Geographic scope: [________________________________]
  • Channels: ☐ Online ☐ Retail ☐ Wholesale ☐ Social media ☐ Other: [________________________________]

4. LEGAL BASIS FOR CLAIMS

A. Federal Claims

Lanham Act Trademark Infringement (15 U.S.C. § 1114): Unauthorized use of a confusingly similar mark. The Third Circuit applies the Interpace Corp. v. Lapp, Inc., 721 F.2d 460 (3d Cir. 1983) factors for likelihood of confusion analysis, including: (1) degree of similarity; (2) strength of plaintiff's mark; (3) price of goods; (4) channels of trade; (5) advertising; (6) intent of defendant; (7) actual confusion; (8) quality of defendant's goods; (9) sophistication of consumers; and (10) other relevant factors.

False Designation of Origin (15 U.S.C. § 1125(a)): Infringer's use creates a false impression of source, sponsorship, or affiliation.

Trademark Dilution (15 U.S.C. § 1125(c)): If Rights Holder's marks were famous before Infringer's challenged use began and that use is likely to cause dilution by blurring or tarnishment, Rights Holder may seek relief under the federal dilution provision.

Copyright Infringement (17 U.S.C. § 501): Unauthorized reproduction, distribution, display, or derivative works of copyrighted material.

Patent Infringement (35 U.S.C. § 271(a)): Direct infringement requires a patented invention, an act of making, using, offering to sell, or selling within the United States (or importing into the United States), lack of authority, and conduct during the patent term. Identify each asserted claim and map every claim element to the accused product or process; do not infer infringement from product similarity alone. The U.S. District Court for the District of Delaware has local patent rules that may apply when venue and jurisdiction are otherwise proper.

B. Delaware State Claims

Delaware Deceptive Trade Practices Act (6 Del. C. § 2531 et seq.):

  • § 2532(a): Defines deceptive trade practices, including passing off, causing confusion as to source, and false representation of goods
  • § 2533(a): A person likely to be damaged by a deceptive trade practice may obtain an injunction
  • § 2533(b): The court may award attorneys' fees to the prevailing party if the opposing party acted willfully
  • § 2533(c): Proof of monetary damage or intent to deceive is not required for injunctive relief

Delaware Trademark Act (6 Del. C. § 3301 et seq.):

  • § 3312: Infringement of registered Delaware marks
  • § 3313: Remedies including injunctions, damages, profits, and reasonable attorneys' fees
  • § 3314: Trademark dilution protection for marks with distinctiveness in Delaware

Delaware Uniform Trade Secrets Act (6 Del. C. § 2001 et seq.):

  • § 2002: Injunctive relief for actual or threatened misappropriation
  • § 2003: Damages including unjust enrichment and reasonable royalties
  • § 2004: Attorneys' fees for willful misappropriation or bad faith claims

Common Law: Delaware recognizes common law claims for unfair competition, passing off, and tortious interference.


5. DEMANDS

Rights Holder requests that Recipient take the following actions on or before 5:00 p.m. Eastern Time on [__/__/____] (the "Compliance Deadline"), which is [____] calendar days from this letter:

A. Immediate Cessation

5.1. Immediately and permanently cease all manufacture, reproduction, distribution, display, advertising, promotion, sale, importation, and use of Infringing Material.

5.2. Remove all Infringing Material from:
☐ All websites, web pages, and online platforms
☐ All social media accounts and profiles
☐ All third-party marketplaces
☐ All physical locations and inventory
☐ All advertising, marketing, and promotional materials
☐ All signage, packaging, trade dress, and business materials
☐ All domain names incorporating Rights Holder's marks
☐ Other: [________________________________]

B. Signed Response

5.3. Provide a signed written response identifying which requested steps Recipient has taken, declined, or proposes to modify.

C. Accounting

5.4. Provide a complete accounting of revenues, units, channels, and dates related to Infringing Material.

D. Surrender or Destruction

5.5. Deliver to Rights Holder or destroy and provide signed confirmation of destruction for all Infringing Material, including digital files, production materials, and inventory.

E. Domain Transfer

5.6. Transfer any infringing domain names to Rights Holder: [________________________________]


6. PRESERVATION OF EVIDENCE

LITIGATION HOLD: Immediately preserve all documents, ESI, and tangible items relating to the IP and Infringing Material, including:

☐ Source files, design files, production records
☐ Financial records, invoices, receipts
☐ All correspondence (email, text, messaging)
☐ Website analytics, advertising data
☐ Manufacturing records, supplier communications
☐ Social media content
☐ Backups and cloud storage

Fed. R. Civ. P. 37(e) applies to ESI that should have been preserved in anticipation or conduct of litigation, is lost because reasonable steps were not taken, and cannot be restored or replaced. Available measures depend on prejudice or intent; receipt of this letter does not automatically create sanctions, an adverse inference, or contempt.


7. CONSEQUENCES OF NON-COMPLIANCE

A. Injunctive Relief

Filing in the U.S. District Court for the District of Delaware and/or Delaware Court of Chancery for temporary, preliminary, and permanent injunctive relief. Delaware's Court of Chancery has extensive equity jurisdiction and is well-suited for IP injunction proceedings.

B. Monetary Damages

Trademark: Profits, actual damages, costs, and exceptional-case fees under 15 U.S.C. § 1117(a), where established; statutory damages and special trebling under § 1117(b)-(c) are limited to qualifying counterfeit-mark cases.

Copyright: Actual damages and profits or an election of statutory damages under 17 U.S.C. § 504, subject to the registration and timing limits in §§ 411 and 412; fees under § 505 are discretionary.

Patent: Compensatory damages not less than a reasonable royalty and possible enhancement under 35 U.S.C. § 284; patent law does not supply generic statutory damages or disgorgement for ordinary utility-patent infringement.

Delaware DTPA: Injunctive relief (6 Del. C. § 2533(a)); attorneys' fees for willful violations (§ 2533(b)).

Delaware Trademark Act: Damages, profits, and attorneys' fees (6 Del. C. § 3313).

Delaware Trade Secrets Act: Damages including unjust enrichment; attorneys' fees for willful misappropriation (6 Del. C. §§ 2003-2004).

C. Attorneys' Fees

  • 15 U.S.C. § 1117(a) (trademark)
  • 17 U.S.C. § 505 (copyright)
  • 35 U.S.C. § 285 (patent)
  • 6 Del. C. § 2533(b) (DTPA)
  • 6 Del. C. § 3313 (Delaware Trademark Act)
  • 6 Del. C. § 2004 (Trade Secrets Act)

D. Additional Remedies

  • Impoundment and destruction of infringing goods
  • DMCA takedown notices (17 U.S.C. § 512)
  • For qualifying registered trademarks or copyrights, CBP recordation and applicable border measures (19 C.F.R. Part 133; 19 U.S.C. § 1526 applies to trademarked merchandise)
  • Criminal referral where appropriate
  • ITC exclusion orders for imported infringing goods (19 U.S.C. § 1337)

8. RESERVATION OF RIGHTS

Nothing herein constitutes a waiver, admission, limitation, or license. All rights and remedies are expressly reserved.


9. DISPUTE RESOLUTION AND FORUM

9.1. Governing Law. Federal IP law governs federal claims. Delaware law governs state claims where not preempted.

9.2. Potential Forum. [IDENTIFY ONLY AFTER COUNSEL CONFIRMS SUBJECT-MATTER JURISDICTION, PERSONAL JURISDICTION, AND VENUE]. This letter does not create forum selection by unilateral statement.

9.3. Resolution. Rights Holder prefers resolution without litigation. Compliance by the Deadline may facilitate settlement discussions. This does not waive any right or extend the Deadline.


10. RESPONSE REQUESTED

Direct all communications to the undersigned. Written response required by the Compliance Deadline.

Sent without prejudice to all rights.


Respectfully,

_____________________________________________

[________________________________]
[Title]
[Law Firm / Rights Holder]
[Delaware Bar Number]
[Address]
[Telephone]
[Email]


cc: [________________________________]

Enclosures:

  • Schedule A - IP Registration Certificates
  • Schedule B - Evidence of Infringing Material
  • Schedule C - Optional Signed Response

SCHEDULE A - IP DOCUMENTATION

(Attach registrations, certificates, patent documents)


SCHEDULE B - EVIDENCE OF INFRINGEMENT

(Attach screenshots, photographs, receipts, dated and sourced)


SCHEDULE C - OPTIONAL SIGNED RESPONSE

I, [________________________________], provide the following signed response based on information reasonably available to me:

  1. I am authorized to execute this on behalf of [________________________________].
  2. Full compliance with all demands in the letter dated [__/__/____] has been achieved.
  3. Specifically:

☐ All infringing activities have permanently ceased.
☐ All Infringing Material removed from all platforms and locations.
☐ Inventory ☐ delivered to Rights Holder / ☐ destroyed (proof attached).
☐ Complete accounting attached.
☐ Domain names transferred (if applicable).
☐ All evidence preserved.

  1. All information is true, correct, and complete.

Executed this [____] day of [________________________________], 20[____].

Signature: _____________________________________________

Name: [________________________________]

Title: [________________________________]


SOURCES AND REFERENCES

  1. 15 U.S.C. § 1051 et seq. - Lanham Act (federal trademark)
  2. 15 U.S.C. § 1114 - Infringement of registered marks
  3. 15 U.S.C. § 1125(a) - False designation of origin
  4. 15 U.S.C. § 1125(c) - Trademark dilution
  5. 15 U.S.C. § 1116-1118 - Trademark remedies
  6. 17 U.S.C. § 101 et seq. - Copyright Act
  7. 17 U.S.C. § 501-505 - Copyright infringement and remedies
  8. 17 U.S.C. § 512 - DMCA
  9. 35 U.S.C. § 271, 281-285 - Patent infringement and remedies
  10. 6 Del. C. § 2531 et seq. - Delaware Deceptive Trade Practices Act
  11. 6 Del. C. § 2532 - Deceptive trade practices defined
  12. 6 Del. C. § 2533 - Remedies (injunction, attorneys' fees)
  13. 6 Del. C. § 3301 et seq. - Delaware Trademark Act
  14. 6 Del. C. § 3312-3314 - Trademark infringement, remedies, dilution
  15. 6 Del. C. § 2001 et seq. - Delaware Uniform Trade Secrets Act
  16. 18 U.S.C. § 1836 - Defend Trade Secrets Act
  17. Interpace Corp. v. Lapp, Inc., 721 F.2d 460 (3d Cir. 1983) - Third Circuit confusion factors
  18. Halo Elecs., Inc. v. Pulse Elecs., Inc., 579 U.S. 93 (2016) - Enhanced patent damages standard
  19. D. Del. Local Patent Rules - U.S. District Court for the District of Delaware

This template is provided for informational and educational purposes only. It does not constitute legal advice. Federal IP law and Delaware state law are subject to change. Delaware is a leading IP litigation jurisdiction; consult with qualified Delaware counsel before sending any cease and desist communication.

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About this template

Last updated
September 4, 2026
Jurisdiction
Delaware
Category
Intellectual Property

Legal authority

  • 15 U.S.C. § 1051 et seq. (Lanham Act - Federal Trademark)
  • 15 U.S.C. § 1114 (Trademark infringement - registered marks)
  • 15 U.S.C. § 1125(a) (False designation of origin / unfair competition)
  • 15 U.S.C. § 1125(c) (Trademark dilution)
  • 17 U.S.C. § 101 et seq. (Copyright Act)
  • 17 U.S.C. § 501 (Copyright infringement)
  • 17 U.S.C. § 512 (DMCA)
  • 35 U.S.C. § 271 (Patent infringement)
  • 35 U.S.C. § 281-285 (Patent remedies)
  • 6 Del. C. § 2531 et seq. (Delaware Deceptive Trade Practices Act)
  • 6 Del. C. § 2532 (Deceptive trade practices defined)
  • 6 Del. C. § 2533 (Remedies for deceptive trade practices)
  • 6 Del. C. § 3301 et seq. (Delaware Trademark Act)
  • 6 Del. C. § 3313 (Trademark infringement remedies)
  • 6 Del. C. § 2001 et seq. (Delaware Uniform Trade Secrets Act)

Intellectual property law protects inventions, brand names, creative works, and trade secrets. Filings with federal IP offices have strict formal requirements, and demand letters or licensing agreements have to identify the exact rights being claimed. Weak IP paperwork makes it harder to enforce your rights against copycats, harder to sell or license your IP, and easier for someone else to claim it first.

Not legal advice

This template is provided for informational purposes. We recommend having an attorney review any legal document before signing, especially for high-value or complex matters.

Checked against the law it cites

The statutes this template relies on are listed under Legal authority.

15 U.S.C. § 1117(a), (c) (checked August 17, 2026): "When a violation of any right of the registrant of a mark registered in the Patent and Trademark Office, a violation under section 1125(a) or (d) of this title, or a willful violation under section 1125(c) of this title, shall have been established in any civil action arising under this chapter, the plaintiff shall be entitled, subject to the provisions of sections 1111 and 1114 of this title, and subject to the principles of equity, to recover (1) defendant's profits, (2) any damages sustained by the plaintiff, and (3) the costs of the action. In a case involving the use of a counterfeit mark (as defined in section 1116(d) of this title) in connection with the sale, offering for sale, or distribution of goods or services, the plaintiff may elect, at any time before final judgment is rendered by the trial court, to recover, instead of actual damages and profits under subsection (a), an award of statutory damages for any such use in connection with the sale, offering for sale, or distribution of goods or services."

17 U.S.C. § 412 (checked August 17, 2026): "No award of statutory damages or of attorney's fees, as provided by sections 504 and 505, shall be made for—(1) any infringement of copyright in an unpublished work commenced before the effective date of its registration; or (2) any infringement of copyright commenced after first publication of the work and before the effective date of its registration, unless such registration is made within three months after the first publication of the work."

35 U.S.C. § 284 (checked August 17, 2026): "Upon finding for the claimant the court shall award the claimant damages adequate to compensate for the infringement, but in no event less than a reasonable royalty for the use made of the invention by the infringer, together with interest and costs as fixed by the court. In either event the court may increase the damages up to three times the amount found or assessed."

Fed. R. Civ. P. 37(e) (checked August 17, 2026): "If electronically stored information that should have been preserved in the anticipation or conduct of litigation is lost because a party failed to take reasonable steps to preserve it, and it cannot be restored or replaced through additional discovery, the court:"

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