The consequence of doing business in Minnesota under an unfiled assumed name is not what most people assume. It does not void your contracts. It does not dissolve your company. It does not, by itself, lose you the case.
What it does is stop the case where it stands, and cost you $250 no matter how the case comes out.
Minn. Stat. § 333.06 is the operative provision, and it is worth reading in full before deciding whether the filing is worth thirty dollars:
If any person conducting a business contrary to the terms of sections 333.001 to 333.06 shall, prior to the filing of the certificate therein prescribed, commence a civil action, including an action to recover possession of real property in any court of this state on account of any contract made by, or transaction had on behalf of the business, the defendant may plead such failure in abatement of the action; and all proceedings had in the action shall thereupon be stayed until the certificate provided for by sections 333.001 to 333.06 is duly filed, and if the defendant prevails in the action, the defendant shall also be entitled to tax $250 costs, in addition to such other statutory costs as may be allowed by law, and, if the defendant does not prevail in the action, the defendant shall be entitled to deduct $250 from the judgment otherwise recoverable therein and if a judgment for money is not otherwise recoverable therein, the defendant shall be entitled to tax $250 costs. If such a person defends against a civil action, the plaintiff shall be entitled to tax $250 costs, regardless of which party prevails upon the merits.
(Emphasis added.) Four separate money outcomes are packed into that paragraph, and they are worth stating one at a time.
- If you sued without a filed certificate and the defendant wins, the defendant taxes $250 in costs on top of ordinary statutory costs.
- If you sued without a filed certificate and the defendant loses, the defendant deducts $250 from the judgment you recover.
- If you sued without a filed certificate, the defendant loses, and no money judgment is recoverable anyway, the defendant taxes $250 in costs.
- If you were the defendant operating under an unfiled assumed name, the plaintiff taxes $250 in costs — “regardless of which party prevails upon the merits.”
Read that last one twice. A business that wins outright still pays $250 for having failed to make a filing that costs thirty.
Who has to file?
Subdivision 1 of § 333.01 states the rule as a prohibition:
No person shall hereafter carry on or conduct or transact a commercial business in this state under any designation, name, or style, which does not set forth the true name of every person interested in such business unless such person shall file in the Office of the Secretary of State, a certificate setting forth the name and business address under which the business is conducted or transacted, or is to be conducted or transacted, and the true name of each person conducting or transacting the same, with the address of such person.
Two defined terms carry all the weight. “Person” is not limited to human beings — it “means one or more natural persons; a limited liability company, whether domestic or foreign; a registered limited liability partnership, whether domestic or foreign; a partnership; a limited partnership; a corporation, including a foreign, domestic, or nonprofit corporation; a trust; or any other business organization.” § 333.001, subd. 2.
“True name” is defined entity by entity: the full name of the natural person for a proprietorship; the full name of each partner for a partnership; “the full corporate name as stated in its articles” for a corporation; “the full name of the limited liability company as stated in its articles of organization or certificate of authority”; the full name of a limited partnership or registered LLP; at least one trustee for a trust; and at least one beneficial owner for any other form of business organization. § 333.001, subd. 3.
Put those together and the answer to the question most business owners get wrong falls out: an LLC or corporation that operates under any name other than its exact registered name must file a certificate of assumed name. Forming the entity is not enough. “Northshore Holdings, LLC” doing business as “Northshore Cabinetry” is conducting business under a designation that does not set forth its true name, and § 333.02 says the filing has to happen “before commencing such business.”
Two name restrictions apply to the assumed name itself. It “must not include any of the following phrases or their abbreviations: corporation, incorporated, limited, chartered, professional association, cooperative, limited partnership, limited liability company, professional limited liability company, limited liability partnership, or professional limited liability partnership, except to the extent that an entity filing a certificate would be authorized to use the phrase or abbreviation.” § 333.01, subd. 1. And separately: “No person shall use an assumed or fictitious name in the conduct of its business to intentionally misrepresent its geographic origin or location.” § 333.01, subd. 2.
The publication requirement nobody remembers
The certificate “shall be published after it has been filed with the secretary of state in a qualified newspaper in the county in which the person has a principal or registered office for two successive issues.” § 333.01, subd. 1. Section 333.02 repeats the obligation.
This is the step most self-filers skip, because the Secretary of State’s system will happily accept the filing without it. Publication is a separate statutory duty owed after filing, in the right county, in a qualified newspaper, for two successive issues. Amendments carry the same duty — with one exception noted below.
What “abatement” actually means here
Abatement under § 333.06 is a stay, not a dismissal. “[A]ll proceedings had in the action shall thereupon be stayed until the certificate … is duly filed.” File the certificate and the case resumes. That is why the practical answer to a § 333.06 defense is usually to file the certificate the same week and eat the $250, rather than to fight about it.
The Minnesota Supreme Court applied the provision in Heyn v. Braun, 239 Minn. 496 (1953). A defendant pleaded the plaintiff’s failure to file a trade-name certificate in abatement; the plaintiff filed a certificate before trial and then, mid-trial, amended the case title to drop the trade name. The court described § 333.06 as a statute that “provides that proceedings in an action shall be stayed until a proper certificate of tradename shall have been filed by a party commencing an action, when the action is on account of any contract made on behalf of the business covered by such tradename.” Id. at 502.
It then held the amendment proper because the underlying transaction had nothing to do with the trade-name business. The evidence established that the plaintiff “had negotiated the contract for the air conditioning unit as an isolated transaction separate and distinct from the electrical business conducted under the tradename”; the contract was signed in his individual name without reference to the company; and the complaint referred to him only as an individual. “Defendants were in no way deceived, damaged, or deprived of any of their rights because of the inaccuracy of plaintiff’s designation in the complaint.” Id. at 503.
Heyn frames the real question. Section 333.06 applies to an action brought “on account of any contract made by, or transaction had on behalf of the business.” A claim that arises outside the assumed-name business — an individual contract, a personal injury, a dispute involving a different entity — is not within the statute at all.
The other enforcement route: § 8.31
Chapter 333 has a second, less familiar teeth clause. “A person who violates any provision of sections 333.01 to 333.06 is subject to the penalties and remedies provided in section 8.31,” and “[t]he relief provided in this section is in addition to the remedies or penalties otherwise available.” § 333.065.
Section 8.31 is the Attorney General’s enforcement statute. Its remedies include injunctive relief and a civil penalty “in an amount to be determined by the court, not in excess of $25,000” recoverable by the state. § 8.31, subd. 3. And subdivision 3a is the private attorney general provision: “any person injured by a violation of any of the laws referred to in subdivision 1 may bring a civil action and recover damages, together with costs and disbursements, including costs of investigation and reasonable attorney’s fees, and receive other equitable relief as determined by the court.”
Any private claimant reaching for that provision has to clear a judicially added threshold. In Ly v. Nystrom, 615 N.W.2d 302 (Minn. 2000), the Supreme Court held “that the Private AG Statute applies only to those claimants who demonstrate that their cause of action benefits the public.” Id. at 314. A one-on-one dispute where the misrepresentation “was made only to appellant” did not qualify. Id. An assumed-name violation that misled a single counterparty is likely to fail the Ly test; a pattern of trading under concealed names to evade creditors or regulators is a different proposition.
We have not located a published Minnesota appellate decision construing § 333.065 itself. Treat the § 8.31 route as available on the face of the statute and subject to Ly, not as a settled path. See the private attorney general statute for how the public-benefit requirement is applied in practice.
Renewal, amendment, and reinstatement
A certificate “shall be effective upon filing and shall remain in effect as long as an annual renewal for the certificate is filed in each calendar year following the calendar year in which the original filing was filed. The certificate expires in the calendar year following a calendar year in which the annual renewal was not filed.” § 333.055, subd. 1. The Secretary of State must give notice of the renewal requirement at the time of the original filing. Id. The renewal itself “must include the assumed name and the address of the principal place of business.” Subd. 2a.
An expired certificate is not gone for good. “Any assumed name certificate that expires as a result of failing to file the annual renewal … may be reinstated by filing the annual renewal with the $25 reinstatement fee.” Subd. 2.
Amendments have their own clock: “Within 60 days after the occurrence of any event which makes any statement in the last previous certificate filed incorrect, an amended certificate shall be filed and the amended certificate shall be published by the person conducting the business in the same manner as provided by section 333.01. If the amendment is made only to comply with a change in the law that occurred since the previous date of filing, publication is not required.” § 333.035. So a change of address, a change in ownership, or a corporate name change starts a 60-day amendment obligation — and a publication obligation with it, unless the only reason for the amendment is a change in the law.
What it costs
The statutory fee is not $50. “The secretary of state shall charge and collect a fee of $30 for each filing submitted with respect to an assumed name except for the annual renewal, for which no fee will be charged.” § 333.055, subd. 3.
The figure people usually quote comes from adding the expedited-service surcharge: “The secretary of state may impose a surcharge of $20 on each transaction involving expedited service that is provided by the Office of the Secretary of State.” § 5.14. Thirty plus twenty is fifty. If you file by mail and wait, the statute contemplates thirty. Reinstatement of a lapsed certificate is $25 under § 333.055, subd. 2. The annual renewal is free — which makes the lapse that triggers a § 333.06 abatement defense a pure unforced error.
What the filing gets you — and what it does not
A filed certificate is evidence. “A copy of such certificate, duly certified to by the secretary of state, shall be presumptive evidence in all courts of law in this state of the facts therein contained.” § 333.04.
It is also a partial blocker in the Secretary of State’s name index, and the direction of the protection is counterintuitive.
It does not protect you against another assumed name. “The secretary of state shall accept for filing all certificates and renewals thereof which comply with the provisions of sections 333.001 to 333.06 and which are accompanied by the prescribed fees, notwithstanding the fact that the assumed name disclosed therein may not be distinguishable from one or more other assumed names already filed with the secretary of state.” § 333.055, subd. 4 (emphasis added). Two Minnesota businesses can hold identical assumed names, and the Secretary of State will file both.
It does block a later entity name. The same subdivision forbids the Secretary of State from accepting an assumed name that “is not distinguishable from a corporate, limited liability company, limited liability partnership, cooperative, or limited partnership name in use or reserved in this state by another or a trade or service mark registered with the secretary of state,” absent a written consent, a court decree of prior right, or an affidavit of nonuser of the kind described in § 302A.115, subd. 1(d). Id. And the corporate-name statute runs the same rule in reverse: a new corporate name must be distinguishable from every name “reserved as provided for in sections 5.35, 302A.117, 321.0109, 322C.0109, or 333.001 to 333.54,” unless the applicant files a consent, a certified copy of a final decree establishing prior right, or the nonuser affidavit described in § 302A.115, subd. 1(d)(3). So your filed assumed name will stop a later incorporator from taking the same name — but not a later sole proprietor filing the same assumed name.
It is not a trademark. Registration of trademarks and service marks with the Secretary of State is a separate process under a separate part of chapter 333; § 333.04 distinguishes assumed-name filings from marks “filed with the secretary of state and issued pursuant to sections 333.20 and 333.21.” An assumed-name certificate creates no exclusive right to use the name in commerce.
Where this fits in a Minnesota business’s paperwork
The assumed-name certificate is one of four filings that are easy to skip and expensive to have skipped. The entity’s own annual renewal is a different obligation with a different consequence — see LLC annual renewal and reinstatement. A certificate of good standing is a different document again — see the certificate of existence. And a business that never formed an entity at all may have created a general partnership by conduct, with all the personal liability that implies — see the accidental partnership.
If you are starting out, the assumed-name filing belongs on the same page as your EIN, your entity formation, and your sales-tax registration. See the Minnesota small business startup checklist.
And if you are on the receiving end of a lawsuit from a business whose name does not match anything in the Secretary of State’s records, check the assumed-name index before you answer. Section 333.06 is an affirmative defense that has to be pleaded, and it is worth $250 whether you win or lose.
Madgett Law, LLC
Madgett Law, LLC advises Minnesota businesses on entity formation, assumed-name compliance, and the filings that determine whether a company can enforce its own contracts. We also raise and defend § 333.06 abatement issues in commercial litigation. If you are suing on a contract signed in a name that is not on file, the fix takes a day and costs thirty dollars — do it before your opponent notices. Call 612-470-6529 or send us a message.
Sources: Minn. Stat. § 333.001, subd. 2 (definition of “person”), subd. 3 (definition of “true name” by entity type). Minn. Stat. § 333.01, subd. 1 (certificate requirement; prohibited entity-designation words; publication in a qualified newspaper in the county of the principal or registered office for two successive issues), subd. 2 (intentional misrepresentation of geographic origin prohibited). Minn. Stat. § 333.02 (filing and publication before commencing business). Minn. Stat. § 333.035 (amended certificate within 60 days; publication required except for amendments made only to comply with a change in law). Minn. Stat. § 333.04 (Secretary of State’s alphabetical list; certified copy is presumptive evidence in all Minnesota courts; distinguishes marks under §§ 333.20 and 333.21). Minn. Stat. § 333.055, subd. 1 (effective on filing; annual renewal; expiration), subd. 2 ($25 reinstatement), subd. 2a (contents of the annual renewal), subd. 3 ($30 per filing; no fee for the annual renewal), subd. 4 (assumed names need not be distinguishable from other assumed names; must be distinguishable from entity names and registered marks absent consent, decree, or affidavit). Minn. Stat. § 333.06 (plea in abatement; stay until the certificate is filed; the four $250 cost outcomes). Minn. Stat. § 333.065 (violations subject to the penalties and remedies of § 8.31; relief is additional to other remedies). Minn. Stat. § 5.14 ($20 expedited-service surcharge). Minn. Stat. § 302A.115, subd. 1(d) and (d)(1)–(3) (new corporate name must be distinguishable from names filed or reserved under §§ 333.001 to 333.54; consent, decree, or nonuser affidavit). Minn. Stat. § 8.31, subd. 3 (injunctive relief; civil penalty not in excess of $25,000), subd. 3a (private remedies; damages, costs of investigation, and reasonable attorney’s fees). Heyn v. Braun, 239 Minn. 496, 502–03 (1953) (§ 333.06 stays proceedings until the certificate is filed; no abatement where the contract was an isolated transaction outside the trade-name business and the defendants were not deceived or prejudiced). Ly v. Nystrom, 615 N.W.2d 302, 314 (Minn. 2000) (§ 8.31, subd. 3a applies only to claimants who demonstrate that their cause of action benefits the public).
This article is general legal information about Minnesota law. It is not legal advice, it does not create an attorney–client relationship, and no outcome is promised or implied. Filing fees published by the Secretary of State may differ from the statutory amounts and change without amendment to the statute; confirm current fees with the Secretary of State before filing.