Canadian Trademark Search: How to Use the CIPO Database Before Filing

A thorough trademark search is the most important step you can take before filing a Canadian trademark application. The Canadian Intellectual Property Office (CIPO) maintains a publicly accessible database of all registered and pending trademarks in Canada, and knowing how to use it well can save you the cost of a filing that was never going to succeed.

This guide shows you how to search the CIPO database step by step, what to look for, and how to read your results.

Pro tip: Before you invest in a filing, run a free trademark check to get professional feedback on your trademark's availability.

Why search before filing?

Filing a trademark application without searching first is one of the most common and most expensive mistakes businesses make. Here is why searching matters:

• Avoid wasted fees. CIPO's filing fee is CAD 491.06 for the first class and CAD 149.04 for each additional class (indexed each January), and it is not refunded if the application fails.
• Predict examiner objections. CIPO will cite conflicting trademarks during examination.
• Reduce opposition risk. Existing trademark owners may oppose your application.
• Inform your branding. Discover potential conflicts before investing in marketing materials.
• Strengthen your position. A clean search report supports your application.

For the full cost of a Canadian filing, including our professional fee, see the pricing page.

The CIPO Canadian Trademarks Database

CIPO provides free online access to the Canadian Trademarks Database at ised-isde.canada.ca. This database contains:

• All registered trademarks currently on the Canadian Trademarks Register
• All pending applications under examination or awaiting opposition
• Expired and abandoned trademarks (useful for assessing historical conflicts)
• Trademark details including owner information, goods/services, Nice classes, and filing dates

Accessing the Database

1. Go to the CIPO Trademark Search
2. Select your search type (basic, advanced, or phonetic)
3. Enter your search criteria
4. Review and analyze results

Search Strategies: How to Search Effectively

1. Exact Name Search

Start with an exact search for your proposed trademark:

• Enter the complete trademark text
• Review all results for identical matches
• Note any trademarks in related goods/services classes

2. Phonetic and Sound-Alike Search

CIPO's examination considers trademarks that sound similar, as well as those that look identical. Search for:

• Homophones: trademarks that sound the same but are spelled differently (e.g., "KNIGHT" vs "NIGHT")
• Phonetic variations: different spellings of similar sounds (e.g., "KOOL" vs "COOL")
• Truncated versions: shortened forms of your trademark
• Common misspellings: variations the public might use

The CIPO database includes a phonetic search function that automatically identifies sound-alike trademarks. Always use this in addition to text searches.

3. Root-Word Search

Search for the root elements of your trademark separately:

• If your trademark is "TECHNOVATE," search for "TECH," "NOVA," and "INNOVATE"
• If your trademark is "GREENLEAF," search for "GREEN" and "LEAF" individually
• Check for compound trademarks that include your key elements

4. Design Element Search

If your trademark includes a logo or design element, CIPO uses Vienna Classification codes to categorize design elements. Search by:

• General design category (e.g., animals, plants, geometric shapes)
• Specific design elements within your logo
• Similar visual compositions in your goods/services classes

5. Nice Classification Filtering

Filter your search results by Nice class to focus on the most relevant conflicts:

• Trademarks in the same class pose the highest risk
• Trademarks in related classes may also be cited (e.g., Class 25 clothing and Class 35 retail services for clothing)
• Don't ignore trademarks in different classes entirely; famous trademarks receive broader protection

If you are not sure which classes cover your goods or services, Class Assist walks you through it before you search.

Interpreting Search Results

When reviewing search results, assess each potential conflict on these factors:

Similarity of Trademarks

• Visual similarity: do the trademarks look alike?
• Phonetic similarity: do they sound alike when spoken?
• Conceptual similarity: do they convey similar ideas or meanings?

Similarity of Goods/Services

• Are the goods/services identical, similar, or related?
• Would consumers encounter both trademarks in the same purchasing context?
• Are the trade channels the same?

Status of Conflicting Trademark

• Registered: highest risk; the owner has established rights
• Pending: may or may not register, but poses a risk if it does
• Expired/Abandoned: lower risk, but may indicate common-law rights if still in use

The terms examiners use ("confusingly similar," "distinctive," "descriptive") are explained in plain English in our trademark glossary.

Beyond the Database: Common-Law Rights

The CIPO database only covers registered and pending trademarks. In Canada, trademark rights can also arise through common-law use without registration. To assess common-law conflicts:

• Business name registries: search provincial and territorial business name databases
• Domain name searches: check .ca domain registrations
• Internet searches: Google the trademark to find unregistered users
• Industry directories: check trade publications and industry listings
• Social media: review platform handles and brand pages

Common-law rights in Canada are limited to the geographic area of actual use, but they can still form the basis for an opposition or invalidation proceeding.

Limitations of Self-Searching

While the CIPO database is an excellent starting point, self-searching has limitations:

1. Phonetic analysis requires expertise. Professional searchers use specialized algorithms.
2. Design code searching is complex. Vienna codes require training to use effectively.
3. Common-law searching is labor-intensive. No single database covers all unregistered trademarks.
4. Risk assessment is subjective. Determining whether trademarks are "confusingly similar" requires legal judgment.
5. Bilingual considerations. Trademarks may conflict in French even if distinctive in English.

GTC advantage: Our Canadian trademark service includes a professional clearance search with our team's analysis covering both the CIPO database and common-law sources.

When to Conduct Your Search

Ideal timing for trademark searches:

1. Before finalizing your brand: search during the branding development phase
2. Before investing in marketing: confirm availability before printing materials or launching campaigns
3. Before filing your application: a final full search immediately before filing
4. When expanding to Canada: if you have a trademark registered elsewhere, search Canada before entering the market (our Canada country guide covers the filing rules you will meet next)

Start Your Canadian Trademark Search

A thorough search is the foundation of a successful trademark strategy. Begin with a free trademark check for professional analysis, or explore our Canadian trademark services for filing support.

Sources

• CIPO Canadian Trademarks Database
• Canadian Intellectual Property Office