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Your Ardencroft Intellectual Property Attorney
Intellectual property law splits into four main areas, patents, trademarks, copyrights, and trade secrets, and each has its own rules on where a case is filed and how long you have. The sections below explain those rules for a matter arising in Ardencroft. You will find the quick answers first, then the definitions, deadlines, registration, the courts, state law, and the basic elements of infringement claims, with the statute behind each point. An attorney who handles intellectual property matters can tell you which of these rules apply to your situation.
The Short Answers: Deadlines, Courts, and Protection
- Who can be liable for patent infringement? Anyone who, without authority, makes, uses, offers to sell, or sells a patented invention in the United States, or imports it (35 U.S.C. 271(a)).
- Trademark claims can go to federal or state court (28 U.S.C. 1338(a)), and Delaware’s own registration is a separate filing with the Delaware Secretary of State.
- Register first, sue second. No civil action for infringement of the copyright in a United States work can be instituted until registration has been made or refused in the way the statute provides (17 U.S.C. 411(a)).
- Trade secrets get a federal civil action when the secret relates to a product or service used in, or intended for use in, interstate or foreign commerce (18 U.S.C. 1836(b)(1)), filed in federal district court (18 U.S.C. 1836(c)).
- Where is my case filed? Ardencroft is in the District of Delaware, and that court holds court in Wilmington (28 U.S.C. 87).
Patents, Trademarks, Copyrights, and Trade Secrets Compared
A patent protects an invention. Whoever invents or discovers a new and useful process, machine, manufacture, or composition of matter may obtain a patent, subject to the conditions and requirements of the patent statute (35 U.S.C. 101). The term is 20 years from the date the application was filed (35 U.S.C. 154(a)(2)).
If the issue is a business name, logo, or slogan, the question is trademark, which the Lanham Act defines as a word, name, symbol, or device that identifies and distinguishes goods and indicates their source (15 U.S.C. 1127), with service marks covering services.
Copyright protects expression, not ideas. The subject matter is original works of authorship fixed in a tangible medium (17 U.S.C. 102(a)), and protection does not extend to any idea, procedure, process, system, or method of operation, however it is described (17 U.S.C. 102(b)).
Business and technical information such as plans, formulas, and processes qualifies as a trade secret only if the owner has taken reasonable measures to keep it secret and it derives independent economic value from secrecy (18 U.S.C. 1839(3)).
How Long Do You Have to Bring a Claim?
Three years is the copyright limit in 17 U.S.C. 507(b), measured from when the claim accrued. Registration comes first under 17 U.S.C. 411(a), so the clock and the registration process can overlap.
The federal trade secret deadline is set by 18 U.S.C. 1836(d): three years from the date the misappropriation was discovered or by the exercise of reasonable diligence should have been discovered, with continuing misappropriation counted as one claim.
Patents: there is no recovery for infringement committed more than six years before the filing of the complaint or counterclaim for infringement (35 U.S.C. 286). Waiting can therefore shrink the damages available even when the patent itself is still in force.
The federal deadlines above do not decide state-law claims. Delaware sets its own limitation periods and accrual rules, and an attorney can tell you which apply to a trade secret or unfair competition claim brought under state law.
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Registering and Protecting Your Rights
Registration on the federal principal register begins with an application and verified statement. The statute allows the owner of a mark used in commerce to apply (15 U.S.C. 1051(a)(1)) and separately a person with a bona fide intention to use (15 U.S.C. 1051(b)(1)).
Delaware also has its own trademark registration. A state filing is made with the Delaware Secretary of State under Chapter 33 of Title 6 of the Delaware Code, is separate from the federal register, and does not replace a federal application.
Copyright exists without a filing, but a lawsuit about a United States work requires preregistration or registration first (17 U.S.C. 411(a)). The standard term for a work created on or after January 1, 1978 is the life of the author and 70 years after the author’s death (17 U.S.C. 302(a)).
A patent application starts the 20-year term (35 U.S.C. 154(a)(2)), and the invention must fit a statutory category such as a process, machine, manufacture, or composition of matter (35 U.S.C. 101). An attorney can review both points before you file.
Which Court Handles a Claim From Ardencroft
The choice of court depends on the type of claim. Patent and copyright cases can only be filed in federal district court (28 U.S.C. 1338(a)), a federal trade secret action is filed in federal district court (18 U.S.C. 1836(c)), and trademark claims can go to federal or state court.
There is only one federal district in Delaware. The District of Delaware hears federal cases from New Castle County and holds court in Wilmington (28 U.S.C. 87).
How Delaware Law Fits In
Owners of confidential information in Ardencroft can look to two sources: the Delaware Uniform Trade Secrets Act (6 Del. C. 2001 and following sections) and the federal action in 18 U.S.C. 1836(b), which requires a connection to interstate or foreign commerce and has its own three-year deadline (18 U.S.C. 1836(d)).
Federal trademark law under 15 U.S.C. 1114 and 1125 sits alongside Delaware’s registration system, which runs through the Delaware Secretary of State under Chapter 33 of Title 6 of the Delaware Code. The two operate separately.
A lawyer can compare the federal and state routes for your situation and explain the tradeoffs.
What Kinds of Intellectual Property Cases Come Up?
Using an Invention Without Permission
A patent claim asks whether the accused product or process is covered by the patent and whether the accused party acted without authority. The forms of infringement listed in 35 U.S.C. 271(a) are making, using, offering to sell, selling, and importing.
Both patent owners and people accused of infringing should collect the patent number, product samples, and dates early.
Trademark Infringement and Brand Disputes
Brand disputes often involve both a registered mark and one that has never been registered. Registered marks are protected against likely confusion under 15 U.S.C. 1114(1)(a), and 15 U.S.C. 1125(a)(1) covers false designation of origin more broadly.
Trademark claims may be filed in federal court or in state court (28 U.S.C. 1338(a)).
Copyright Infringement
A copyright claim starts with an original work of authorship fixed in a tangible medium (17 U.S.C. 102(a)), and it is limited to expression: the idea, procedure, process, system, or method of operation is not protected (17 U.S.C. 102(b)).
For a United States work, registration must be made before an infringement suit is instituted (17 U.S.C. 411(a)).
Disputes Over Trade Secrets
A federal trade secret claim requires a trade secret related to a product or service used in, or intended for use in, interstate or foreign commerce (18 U.S.C. 1836(b)(1)), and the information must meet the definition of a trade secret in 18 U.S.C. 1839(3): reasonable secrecy measures and independent economic value.
The federal action has a three-year deadline running from discovery, or from when reasonable diligence should have led to discovery (18 U.S.C. 1836(d)).
What a Court Can Award or Order
In a patent case, the statute directs an award of damages adequate to compensate for the infringement and never less than a reasonable royalty, plus interest and costs, with increases of up to three times possible in the court’s discretion (35 U.S.C. 284). Injunctions are available in accordance with the principles of equity (35 U.S.C. 283).
Trademark: courts can grant injunctions according to the principles of equity to prevent the violation of the rights of a registrant or a violation of section 1125(a), (c), or (d) (15 U.S.C. 1116(a)), and when a violation is established the plaintiff is entitled, subject to the principles of equity, to recover the defendant’s profits, any damages sustained by the plaintiff, and the costs of the action (15 U.S.C. 1117(a)).
Copyright: an infringer is liable for either the copyright owner’s actual damages and any additional profits of the infringer, or statutory damages (17 U.S.C. 504(a)). For statutory damages, the court may award a sum of not less than $750 or more than $30,000 per work as it considers just (17 U.S.C. 504(c)(1)).
Under 17 U.S.C. 412, an owner who registers after an infringement has started may lose access to statutory damages and attorney’s fees for that infringement, unless the work was published and registered within three months of first publication.
Relief under 18 U.S.C. 1836(b)(3) includes an injunction, compensatory damages or a reasonable royalty, exemplary damages of up to 2 times for willful and malicious misappropriation, and reasonable attorney’s fees to the prevailing party when the statute’s conditions are met.
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What an Attorney Will Want to See
Bring a simple chronology. When was the work created, when was it first shared or sold, and when did you first notice the copying or use? Many of the deadlines on this page run from those events.
Patent matters go faster with drawings, lab notes, patent or application numbers, and a list of who has seen the invention. Trademark matters go faster with the mark itself, samples of its use, and any registration documents.
Creators should bring the work itself, dated drafts, and examples of the copy. Owners of confidential information should bring a description of it, a list of who had access, and the steps taken to keep it secret.
Intellectual Property Matters in Ardencroft and New Castle County
Ardencroft matters that reach federal court are heard in the District of Delaware. Knowing which court you will be in matters because deadlines such as the three-year copyright and trade secret limits run regardless of the court.
Injury claims follow different rules, covered on our Ardencroft personal injury attorney page. Nearby communities we serve include Ardentown, Bellefonte, and Wilmington. For the full list of Delaware communities we serve, see our Delaware intellectual property page.
Frequently Asked Questions
How long does a patent last?
A patent lasts 20 years from the date the application was filed in the United States (35 U.S.C. 154(a)(2)), so the filing date, not the issue date, sets the end of the term.
What is trademark infringement?
For a registered mark, it is using in commerce a reproduction, counterfeit, copy, or colorable imitation in connection with goods or services where the use is likely to cause confusion, mistake, or deception (15 U.S.C. 1114(1)(a)).
Which court hears a copyright case from Ardencroft?
The federal district courts have original jurisdiction over copyright claims (28 U.S.C. 1338(a)). For Ardencroft, that is the District of Delaware.
What do I have to show to protect a trade secret?
The two elements of the definition: that you took reasonable measures to keep the information secret, and that it has independent economic value from not being generally known or readily ascertainable (18 U.S.C. 1839(3)).
Are trade secret cases filed in federal court?
A federal trade secret action under 18 U.S.C. 1836 is filed in federal district court (18 U.S.C. 1836(c)), and Delaware state-law claims are separate claims.
Does Delaware law protect trade secrets?
Yes. Delaware has the Delaware Uniform Trade Secrets Act (6 Del. C. 2001 and following sections), and the federal Defend Trade Secrets Act (18 U.S.C. 1836) adds a separate federal action.
How long do I have to bring a copyright claim?
Three years after the claim accrued (17 U.S.C. 507(b)), and registration must come before suit on a United States work (17 U.S.C. 411(a)).
How do I keep information as a trade secret?
Take reasonable measures to keep it secret, because that is one of the two elements of the definition (18 U.S.C. 1839(3)), and consult an attorney about what measures are reasonable for your business.
Talk to an Attorney About Your Ardencroft Matter
The rules on this page are the same statewide, but what they mean for your matter depends on the facts. Use the form to be matched with an attorney who can look at your situation and your dates.

