NUANS Report Guide: Name Searches for Ontario and Federal Corporations

NUANS stands for Newly Upgraded Automated Name Search. It is the Government of Canada's corporate name and trademark search system, operated by Innovation, Science and Economic Development Canada. A NUANS report is a computer-generated list of existing corporate names, registered business names and trademarks that are identical or similar to the name you propose for a corporation.

Ontario's incorporation notice describes the report in the same terms: a list of existing corporate and business names, as well as trademarks, that are the same as or similar to the proposed name. The system does not decide whether your name is acceptable. It gathers the evidence, and the incorporator, or the incorporator's lawyer, decides whether the name is safe to file.

Reports are produced two ways. For federal filings, the search is built into Corporations Canada's Online Filing Centre, so a person incorporating a federal corporation online does not order a separate report first. For Ontario filings, the Ministry does not run the search. Ontario's notice directs applicants to the Nuans website for a list of registered search houses, which are private firms that hold NUANS memberships and order reports for a fee. Law firms that incorporate regularly usually hold their own membership and order the report as part of the incorporation.

A finished report shows the proposed name, a reference number, the date of the search, the jurisdiction the search was weighted toward, and the list of matches. Those first three items are what the Ontario registry asks for when you file.

Ontario named corporations. A corporation incorporated under Ontario's Business Corporations Act with a word name needs an Ontario-biased or weighted NUANS report. The notice is explicit that a Canada-biased report is not acceptable for an Ontario filing. The report cannot be dated more than 90 days before the articles are filed. The Ministry's own example: articles received on November 28 can be supported by a report dated as early as August 30, but no earlier. If the report expires before the articles are endorsed, a new report is needed, so leave a buffer rather than filing on the last day.

You do not upload the report. The online filing asks for the report reference number, the exact name searched and the date of the report, and the corporation must keep a copy at its registered office. The name on the report and the name in the articles must match. A different legal element, an added word or a changed spelling means a new search.

The same Ontario-biased report supports other Ontario filings that adopt a word name, including articles of amendment for a corporate name change.

Federal corporations. For a federal incorporation or a federal name pre-approval, the NUANS search runs inside the application, so no standalone report is needed. Corporations Canada still requires a separate NUANS report for a revival or an amalgamation under the Canada Business Corporations Act, and since fall 2023 that report must be bought through the Online Filing Centre rather than from an outside search house. A pre-approved federal name is valid for 90 days from the date of the request.

Numbered companies. No NUANS report is required for a number name in either jurisdiction. Ontario assigns a number followed by the word Ontario and the legal element you choose; Corporations Canada assigns a number followed by Canada and a legal element. Many owners start this way and register an operating name instead. Our guide to numbered versus named corporations and the encyclopedia entry on named versus numbered corporations cover the trade-offs.

Other provinces and territories have their own name rules. Some accept a NUANS report weighted to their jurisdiction and others run separate systems. Confirm the rule for each place where you intend to incorporate or register before paying for a report.

A NUANS report is the formal step, not the first step. Ontario's notice recommends a free search of the Ontario Business Registry before ordering, to see whether another corporation already uses the proposed name. Corporations Canada's federal corporation search and the Canadian Intellectual Property Office's trademarks database are free as well. Ten minutes on those three databases eliminates most hopeless candidates.

Our free business name search tool adds a layer on top of the registries. It uses AI-assisted web research to flag businesses already trading under the same or a similar name, identifies competitors who would be confused with you online, notes obvious trademark conflicts, and checks whether the matching .ca and .com domains are already registered. Treat it as a screen that helps you shortlist two or three names worth a paid report. It is not a NUANS report, it does not reserve anything, and it is not a legal or trademark opinion.

Working from a shortlist matters because each report costs money and each report is tied to one exact name. If your first choice shows an identical Ontario corporation, you want the second candidate ready, not a week of brainstorming while the filing waits.

A report groups its results so you can judge the risk quickly. Exact or near-exact matches appear first, followed by similar names, which include phonetic matches, spelling variants and names sharing the distinctive word, and then trademarks drawn from the Canadian register. Each entry identifies the jurisdiction and the registered name, and where available, the registration details.

Identical names. In Ontario, incorporators are responsible for ensuring the articles conform to law, and the notice warns that an identical name can be refused unless the specific conditions for using it are met, which can include a legal opinion kept at the registered office. Adding or deleting punctuation does not make a name different for the purposes of the Act, according to the Names and Filings Regulation cited in the notice. Adding or removing a word, numeral or initial, or switching to a different legal element, can.

Similar names. The Ministry does not review similarity for you. A corporation that acquires a name confusingly similar to another corporation's name is exposed to a names hearing or a lawsuit even after the certificate issues. Corporations Canada takes a different approach for federal names: examiners compare the proposed name against the report and may ask you to explain why confusion is unlikely, weighing the nature of each business, its clientele and its geographic area.

Trademarks. A registered or pending trademark in your line of business is the most serious kind of hit, because a corporate registry will not block your filing on that ground, but the trademark owner can. A corporate name does not create trademark rights, and the owner of an earlier mark can force a rename. Our guide to trademarking a business name in Canada explains how the two systems interact.

Dissolved and inactive entities. Names of dissolved corporations still appear. Whether such a name can be reused depends on detailed rules, so do not assume a dissolved match is harmless.

A report is often sold as a "name reservation report", which overstates what it does. When a search is run, the proposed name is recorded in the NUANS system for 90 days so that other searches will show it, but that is a notice to other searchers, not a legal right to the name. Nothing is reserved against someone who files first in a jurisdiction you did not search, and nothing stops a sole proprietor from registering the same words as a business name.

Corporations Canada's warning applies equally in Ontario: getting a NUANS search does not mean the government has pre-approved or approved the name. Approval of a federal word name also does not guarantee protection against other corporate names, business names or trademarks. Protecting the name after incorporation is the corporation's job.

The report is not trademark clearance. It lists Canadian trademarks that the search engine considers similar, but it does not search unregistered marks, foreign marks or the marketplace, and it does not assess likelihood of confusion the way a trademark examiner or a court would.

It is not a business-name registration. If the corporation will trade under anything other than its exact legal name, that operating name must be registered separately under Ontario's Business Names Act, and the report does not do that for you.

Finally, it says nothing about domain names, app stores or social media handles. Those are commercial checks, not legal ones, and they belong in your preliminary screen.

A clean report does not make a non-compliant name acceptable. The rules differ slightly between Ontario and Corporations Canada, but they share a structure.

Legal element. Ontario requires every corporate name to include Limited, Limitée, Incorporated, Incorporée or Corporation, or the abbreviations Ltd., Ltée, Inc. or Corp. The federal list in section 10 of the Canada Business Corporations Act adds Société par actions de régime fédéral and S.A.R.F. The corporation may be designated by either the full word or the abbreviation.

Distinctiveness. Corporations Canada's central requirement is that the name be distinctive. A name that only describes the goods, services or activities of the business is not distinctive, and a name made up solely of an individual's name generally is not either. Made-up words, unusual combinations and a distinctive word paired with a descriptive one tend to clear. Ontario applies the same idea through its prohibition on names that are confusingly similar or misleading.

Prohibited and restricted terms. Federal rules prohibit obscene words, terms that imply a connection with Parliament Hill, the Royal Canadian Mounted Police or the United Nations, and cooperative terms outside a cooperative. Without written consent, a name cannot imply government sponsorship or control, a connection with a university or professional association, or that the business is a financial institution or a stock exchange. Family names generally need the individual's written consent. Ontario's Names and Filings Regulation contains its own prohibitions and consent requirements, and the Ontario notice places responsibility for obtaining and keeping every consent on the corporation.

Misdescription. A name cannot mislead the public about what the business does, how its goods are made, who makes them or where they come from.

Bilingual forms. A corporation can have an English form, a French form, both, or a combined form. Each has rules about how it is used and how the legal element appears.

Start with distinctiveness rather than description. "Oakville Plumbing Inc." tells customers what you do but is weak as a corporate name and nearly impossible to protect as a trademark. "Harbourline Plumbing Inc." is distinctive, still descriptive of the trade, and far more likely to pass both the NUANS review and a later trademark application.

Decide early whether the name is a brand asset. If it is, run the trademark search before the NUANS report, not after, and think about filing an application once the corporation exists. If the brand is not settled, incorporate as a numbered company, register an operating name later and avoid paying for reports on names you may abandon.

Choose the jurisdiction before you search. An Ontario-biased report cannot support a federal incorporation and a federal search cannot support an Ontario one. Our comparison of Ontario versus federal incorporation walks through that decision, and the step-by-step guides to registering an Ontario corporation and incorporating federally show where the report fits in each process.

Match the report to the articles exactly, calendar the 90-day expiry, and file with room to spare.

1. 1.Shortlist two or three distinctive names and run free registry, trademark and web screens, including our business name search tool.
2. 2.Confirm the jurisdiction: Ontario-biased report for an Ontario corporation, a search inside the federal application for a CBCA corporation, no report for a number name.
3. 3.Order the report through a registered search house or your lawyer, or let the federal filing system run it.
4. 4.Review identical matches, similar names and trademarks, and obtain any required consent or legal opinion before filing.
5. 5.Keep the report at the registered office and enter its reference number, searched name and date in the filing.
6. 6.File the articles within 90 days of the report date, with a buffer.
7. 7.Register any operating name separately and consider a trademark application for a name you intend to build a brand around.

This article is general information about Ontario and federal corporate name searches, not legal advice. Name rules, fees and processes change, so confirm current requirements on the Ontario Business Registry or with Corporations Canada before filing. Lamba Law's incorporation and business structuring practice orders and reviews NUANS reports as part of every named incorporation and can advise on the trademark questions a report cannot answer.