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Your Richfield Intellectual Property Attorney
A patent, a trademark, a copyright, and a trade secret are four different things with four different sets of rules. For a Richfield business, artist, or inventor, the first step is knowing which one is actually involved, and this page walks through how to tell. Below you will find the key deadlines at a glance, what each type of protection covers, the steps that come before a lawsuit, which federal court hears a case from Hennepin County, and how Minnesota law fits alongside federal law. The facts of your situation decide which area of law controls, and an attorney who practices in federal court can sort that out quickly.
Deadlines and Courts: The Short Version
- Patent claims are filed in federal court only (28 U.S.C. 1338(a)), and the six-year damages limit in 35 U.S.C. 286 makes early action important.
- Federal trademark registration is available to the owner of a mark used in commerce or to a person with a bona fide intention to use one (15 U.S.C. 1051(a)(1), (b)(1)).
- Copyright lawsuits have a three-year clock from when the claim accrued (17 U.S.C. 507(b)), and a United States work must be registered before an infringement suit can be filed (17 U.S.C. 411(a)).
- Federal trade secret claims must be brought within 3 years after the misappropriation is discovered or should have been discovered with reasonable diligence (18 U.S.C. 1836(d)).
- The federal court for Richfield is the District of Minnesota, with court held at Winona, Mankato, Saint Paul, Minneapolis, Duluth, Fergus Falls, and Bemidji (28 U.S.C. 103).
Patents, Trademarks, Copyrights, and Trade Secrets Compared
If you have made something new and useful, such as a device, a process, a manufactured article, or a composition, a patent is the tool the statute provides (35 U.S.C. 101). The grant runs from issuance to 20 years after 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.
For creative work, copyright arises in original works of authorship fixed in a tangible medium of expression (17 U.S.C. 102(a)). The limit in 17 U.S.C. 102(b) means the underlying idea or method is not protected even when the way it is expressed is.
A trade secret is information the owner has taken reasonable measures to keep secret and that derives independent economic value from not being generally known to, and not being readily ascertainable through proper means by, another person (18 U.S.C. 1839(3)). The statute covers financial, business, scientific, and technical information such as patterns, plans, formulas, designs, methods, processes, programs, and codes.
Filing Deadlines and Damages Limits
Under 17 U.S.C. 507(b), a civil copyright action must be commenced within three years after the claim accrued, and under 17 U.S.C. 411(a) the copyright claim for a United States work must be registered, or registration refused, before that action is instituted.
For a federal trade secret claim, the three years run from discovery of the misappropriation, or from when it should have been discovered by reasonable diligence, and a continuing misappropriation is treated as a single claim (18 U.S.C. 1836(d)).
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.
A Minnesota state-law claim brings its own deadline and its own accrual rule. Both come from Minnesota statutes and court decisions and should be reviewed by an attorney at the start of the matter.
Protecting your work in Richfield? Get matched with an attorney now.
Registration Steps for Trademarks and Copyrights
The Lanham Act sets two routes to the principal register: use in commerce (15 U.S.C. 1051(a)(1)) and a bona fide intention to use (15 U.S.C. 1051(b)(1)). Each requires an application, a verified statement, and the prescribed fee.
A Minnesota business can ask an attorney whether a state-level trademark filing with the Minnesota Secretary of State is worth adding to a federal application. The provisions are in Minn. Stat. chapter 333, and the two registrations are separate.
A copyright owner cannot file an infringement action on a United States work before registration has been made (17 U.S.C. 411(a)), although a refusal of registration can also open the door to suit if the Register of Copyrights is notified and served with the complaint.
The filing date is what starts the patent clock (35 U.S.C. 154(a)(2)), so the timing of an application matters. An attorney can advise whether the invention fits the categories in 35 U.S.C. 101.
Federal and State Courts for Intellectual Property Claims
Under 28 U.S.C. 1338(a), the federal district courts have original jurisdiction over patent, plant variety protection, copyright, and trademark claims, and that jurisdiction is exclusive for patents, plant variety protection, and copyrights. A trademark claim can also be brought in state court.
There is only one federal district in Minnesota. The District of Minnesota hears federal cases from Hennepin County and holds court in Winona, Mankato, Saint Paul, Minneapolis, Duluth, Fergus Falls, and Bemidji (28 U.S.C. 103).
Minnesota Law Alongside Federal Law
Trade secret claims are not only federal. The Uniform Trade Secrets Act (Minn. Stat. chapter 325C) may apply to the same facts, and the federal statute provides its own 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)).
Trademark protection has a state layer as well. A state trademark registration in Minnesota is filed with the Minnesota Secretary of State under Minn. Stat. chapter 333, and it is separate from federal registration on the principal register (15 U.S.C. 1051).
Choosing between state and federal claims, or bringing both, is something an attorney should decide after reviewing what happened and what proof exists.
Types of Intellectual Property Claims
Claims That a Patent Is Being Infringed
Whether conduct is infringement is measured against 35 U.S.C. 271(a), which reaches anyone who, without authority, makes, uses, offers to sell, or sells a patented invention in the United States or imports it during the patent’s term.
A patent case is filed in federal district court (28 U.S.C. 1338(a)).
Disputes Over Names, Logos, and Brands
Infringement of a registered mark means using in commerce a reproduction, counterfeit, copy, or colorable imitation of the mark in connection with the sale, offering for sale, distribution, or advertising of goods or services where the use is likely to cause confusion, mistake, or deception (15 U.S.C. 1114(1)(a)).
Trademark claims may be filed in federal court or in state court (28 U.S.C. 1338(a)).
Copyright Infringement
For writing, images, music, or film, copyright protects the original expression fixed in a tangible medium (17 U.S.C. 102(a)) but never the underlying idea (17 U.S.C. 102(b)).
The duration of a copyright for a work created on or after January 1, 1978 is generally the life of the author plus 70 years (17 U.S.C. 302(a)).
Trade Secret Claims
Trade secret cases often turn on whether the owner took reasonable measures to keep the information secret and whether it has independent economic value from not being generally known, the two elements of 18 U.S.C. 1839(3).
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 Successful Claim Can Recover
Relief in a patent case can include damages of at least a reasonable royalty with interest and costs, and enhancement up to three times in the court’s discretion (35 U.S.C. 284), and an injunction on reasonable terms under 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)).
Delay in registering can cost more than time. Infringement that starts before the effective date of registration generally cannot support statutory damages or attorney’s fees, with the exception in 17 U.S.C. 412 for registration within three months after first publication.
The Defend Trade Secrets Act lists the remedies: an injunction, damages for actual loss and unjust enrichment (or a reasonable royalty), exemplary damages of not more than 2 times the damages for willful and malicious misappropriation, and attorney’s fees in the situations the statute names (18 U.S.C. 1836(b)(3)).
Was your work copied or your brand used without permission? Talk to an attorney in Hennepin County.
Getting Your Records in Order
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.
Inventors should collect drawings, notes, and application numbers, and brand owners should collect the mark, examples of use, and any registration papers, before the first conversation.
For copyright, gather the work, drafts with dates, and examples of copying. For a trade secret, gather what the information is, who could see it, and what confidentiality agreements or security measures applied.
Intellectual Property Matters in Richfield and Hennepin County
Deadlines and definitions are the same across Minnesota, and the courthouse is not. A federal case from Richfield is filed in the District of Minnesota, and getting the timeline for that court from an attorney who practices there is a sound first step.
If the matter involves a crash, a fall, or another injury, our Richfield personal injury attorney page is the better fit. Related city pages in this region: Bloomington, Edina, and Minneapolis. For the full list of Minnesota communities we serve, see our Minnesota 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 Richfield?
The federal district courts have original jurisdiction over copyright claims (28 U.S.C. 1338(a)). For Richfield, that is the District of Minnesota.
What if a former employee took confidential information?
That can be a trade secret claim if the information meets the definition in 18 U.S.C. 1839(3), and the federal deadline is three years from discovery (18 U.S.C. 1836(d)). An attorney can review what was taken and what protections were in place.
Which federal court covers Richfield?
The District of Minnesota (28 U.S.C. 103).
Does Minnesota law protect trade secrets?
Yes. Minnesota has the Uniform Trade Secrets Act (Minn. Stat. chapter 325C), and the federal Defend Trade Secrets Act (18 U.S.C. 1836) adds a separate federal action.
What are the main deadlines in intellectual property cases?
Copyright: three years from accrual (17 U.S.C. 507(b)). Federal trade secrets: three years from discovery (18 U.S.C. 1836(d)). Patent damages: no recovery for infringement more than six years before the complaint (35 U.S.C. 286).
What should I do if someone copies my work?
Note the dates, keep copies, and speak with an attorney early, since deadlines such as three years for copyright (17 U.S.C. 507(b)) and six years of look-back for patent damages (35 U.S.C. 286) run from the events.
Connect With a Richfield Intellectual Property Attorney
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.

