How to Do a Maine LLC Name Search (2026 Guide)

Last Updated April 30, 2026 by the LLCForge Editorial Team. Verified against current state filing data and official Secretary of State sources.

Before you file your Certificate of Formation in Maine, your LLC name has to be unique on the state’s records. You’ll run that check through the Maine Bureau of Corporations business name search at icrs.informe.org. Search results are live, but a name isn’t actually yours until you either reserve it or file formation papers, and Maine’s mail-in processing can take 2 to 4 weeks. Picking a name someone else grabs in the meantime means starting over.

How to Search Maine LLC Names: Step-by-Step

1. Open the Maine Corporate Name Search

Go to the Informe Maine business entity search at icrs.informe.org/nei-sos-icrs/ICRS. This is the public-facing lookup tool run by the Bureau of Corporations, Elections and Commissions. It’s free, no account needed.

The page gives you a few search types. For name research, pick “Search Corporate Names.” That covers LLCs, corporations, LPs, and LLPs all in one query, which is what you want, since Maine compares your proposed name against all of them.

2. Enter the Core Part of Your Name

Type only the distinctive portion of your proposed name. Drop the “LLC” or “Limited Liability Company” suffix. If you’re checking “Pine Tree Carpentry LLC,” just search “Pine Tree Carpentry” or even “Pine Tree.” Maine ignores the designator when judging distinguishability, so searching with it can hide conflicts.

The search defaults to “Starts With.” Run it that way first, then run a “Contains” search to catch entities buried inside longer names.

3. Read Every Hit, Including Inactive Ones

Results show entity name, type, status, and filing date. Status will read Good Standing, Not in Good Standing, Administratively Dissolved, or similar. Don’t assume a dissolved entity frees up the name. Maine often holds dissolved names in reserve for a period, and the Bureau of Corporations has the final call on whether two names are too close.

Click any result to see the full record, including the registered agent and original filing date. That tells you whether you’re looking at an active competitor or a shell that hasn’t filed reports in a decade.

4. Test Variations and Common Misspellings

Run separate searches for plurals, hyphenated forms, and obvious abbreviations. “Northeast” and “North East” are treated as the same name in Maine. So are “Co” and “Company,” “1st” and “First,” and “&” versus “and.” Maine’s distinguishability standard explicitly disregards these.

If “Casco Bay Consulting” is taken, “Casco Bay Consultants” probably won’t clear either. The Bureau looks for substantive distinctiveness, not surface-level wording changes.

5. Check Domain and Trademark Availability

State availability is only half the job. Run your top name through a domain registrar and through the USPTO’s free trademark database at tmsearch.uspto.gov. A name can be free in Maine and still get you a cease-and-desist letter from a federally trademarked brand.

6. Lock It In

Once you’ve got a winner, you have two paths. File your Certificate of Formation right away (filing fee is $175) and the name attaches to your LLC immediately. Or pay $50 to reserve the name for 120 days while you finish your operating agreement, find a registered agent, and get your finances in order.

Maine LLC Naming Rules

Designator Requirement

Your LLC name must end with one of these: “Limited Liability Company,” “Limited Company,” “L.L.C.,” “LLC,” “L.C.,” or “LC.” Maine accepts the abbreviated and unabbreviated forms equally. Periods are optional. Low-profit LLCs (L3Cs) and professional LLCs have their own designator requirements under Title 31.

Distinguishability Standard

Your name has to be distinguishable upon the records of the Secretary of State from every existing reserved name, registered name, or filed entity. “Distinguishable” in Maine means more than swapping a word, changing punctuation, or pluralizing. Articles (“a,” “the”), conjunctions (“and,” “or”), and entity designators are ignored when comparing.

So “The Maine Lobster Company LLC” and “Maine Lobster Co LLC” are the same name to Maine. You’d need a meaningful change, like “Maine Lobster Wholesale LLC.”

Prohibited Words

You can’t use words that suggest your LLC is a government agency (FBI, Treasury, State Department) or that misrepresent the entity type. You also can’t use “corporation,” “incorporated,” “Corp.,” or “Inc.” in an LLC name, since those imply a different business structure.

Restricted Words Requiring Approval

Some words trigger extra paperwork or licensing checks before Maine will approve them:

• Bank, banking, trust: Requires approval from the Maine Bureau of Financial Institutions
• Insurance, insurer: Bureau of Insurance review
• Engineer, engineering: Board of Licensure for Professional Engineers may need to weigh in
• Architect, architecture: Subject to Board of Licensure for Architects, Landscape Architects and Interior Designers rules
• Doctor, physician, medical, dental, attorney, lawyer: These typically require formation as a Professional LLC under 31 MRSA Chapter 13, with all members holding the relevant Maine license
• University, college, academy: May need Department of Education review

What If Your Maine LLC Name Is Already Taken?

It happens constantly. Maine has well over 200,000 active business filings, and the obvious names in popular industries got grabbed years ago. You have options.

Build a Distinguishable Variation

Add a meaningful word, not just a filler. “Portland Plumbing LLC” is taken? Try “Portland Plumbing Solutions LLC,” “Greater Portland Plumbing LLC,” or “Portland Coastal Plumbing LLC.” Each adds a real, distinguishable element. Geographic qualifiers (Bangor, Midcoast, Downeast, Aroostook) work well in Maine because they immediately signal where you operate.

Reserve It While You Decide

If you’ve got a candidate that’s available but you’re not ready to file formation papers, send Form MLLC-1 (Application for Reservation of Name) to the Secretary of State with a $50 fee. That holds the name for 120 days. The reservation isn’t renewable, so don’t reserve too early. If your formation slips past day 120, the name reopens to the public.

Use a DBA (Assumed or Fictitious Name)

Maine lets LLCs operate under an assumed or fictitious name that’s different from the legal name on file. You file a Statement of Intention to Do Business Under an Assumed or Fictitious Name with the Secretary of State. So your LLC could be registered as “Casco Holdings LLC” but do business as “Bayside Bagels.” The DBA itself doesn’t have to be unique the way an LLC name does, but you can’t use someone else’s trademarked brand.

Check Federal Trademarks Before You Commit

A name being available with the Maine Secretary of State doesn’t mean it’s legally yours to use. If another company holds a federal trademark on the name in your industry, they can force you to rebrand even after you’ve spent money on signs, a website, and business cards. Search the USPTO database first.

After You Confirm Your Maine LLC Name

Once your name is locked, the next step is filing your Certificate of Formation with the Bureau of Corporations and paying the $175 state fee. You’ll also need to appoint a Maine registered agent (called a “clerk” in some older Maine statute references, but functionally the same role) with a physical Maine street address.

Walk through the full filing process in our step-by-step Maine LLC formation guide. For a wider look at fees, taxes, and annual report requirements, see the Maine LLC state guide. If you still need to choose a registered agent, compare options in the Maine registered agent guide, and don’t skip drafting an operating agreement, even though Maine doesn’t require you to file one.

Frequently Asked Questions

How long does a Maine LLC name reservation last?

120 days from the date the Secretary of State files your reservation. The reservation can’t be renewed or extended. If you don’t file your Certificate of Formation within that window, the name goes back into the public pool and anyone can claim it.

Is the $50 reservation fee worth it if I’m filing soon anyway?

If you’re going to file your Certificate of Formation within a couple of weeks, probably not. Just file. The reservation makes sense when you need 30+ days to finalize your operating agreement, line up financing, or coordinate co-founders, and you’re worried someone will register the name in the meantime.

Does my Maine LLC’s legal name have to match my domain or brand?

No. Plenty of Maine LLCs operate under one or more DBAs that differ from their registered name. File the DBA (assumed name) form with the Secretary of State if you’ll publicly do business under a name other than your LLC’s legal name. Banks will usually want to see the DBA filing before they’ll open an account in that brand name.

What actually counts as “distinguishable” in Maine?

Maine ignores articles, punctuation, capitalization, plurals, abbreviations like “Co” vs “Company,” and the LLC designator itself. To be distinguishable, you need a substantive change: a different significant word, an added geographic or descriptive term that meaningfully differentiates, or a totally different name. “Smith Plumbing LLC” and “Smiths Plumbing, LLC” are the same name to Maine.

Can I use a name that belongs to a dissolved Maine LLC?

Sometimes, but don’t assume it. Administratively dissolved LLCs can apply for reinstatement and reclaim their name within a statutory window. The Bureau of Corporations decides on a case-by-case basis whether a dissolved name is available. If it’s a name you really want, call the Bureau before filing to confirm.

Can I use a name that’s registered as a corporation, not an LLC?

No. Maine’s distinguishability rule applies across all entity types: LLCs, corporations, LPs, LLPs, and reserved names. If “Acadia Outfitters Inc.” is on file, you can’t form “Acadia Outfitters LLC.” Different entity types don’t make the names distinguishable.

What if the Bureau rejects my name after I file?

You’ll get a rejection notice and lose your filing fee unless they allow a name correction. Some filers submit a name reservation first specifically to get pre-clearance from the state before paying the full $175 formation fee. It’s an extra $50, but it eliminates the risk of a rejected Certificate of Formation.

This content is for informational purposes only and does not constitute legal or tax advice. Always consult a qualified professional for guidance specific to your situation.