Trademark Search Services

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Cardinal is the leading intellectual property services company in the United States. Our clients include Fortune 500 companies, law firms, and educational institutions.
Cardinal has been contracted by the U.S. Patent and Trademark Office since 2006 to conduct their PCT searches and prepare the preliminary opinions across all subject categories. We have an experienced team of over 150 U.S.-based research professionals, many of whom have JDs, Masters, and PhDs.

Search Types


  • Federal Trademarks
  • State Trademarks
  • Common Law
  • Corporate Name Directories
  • Domain Names
  • Design Code Searching
  • All International Classes
Search Types & Databases Searched
Individual Searches
U.S. Knock-Out
U.S. Common Law
U.S. Comprehensive
U.S. Merchandising & Licensing
U.S. Design
Bundled Searches
U.S. Knock-Out & Design
U.S. Comprehensive & Design
  Federal
Trademarks
State
Trademarks
Common
Law
Corporate Name
Directories
Domain
Names
Design Code
Searching
All International
Classes
Individual Searches
U.S. Knock-Out
U.S. Common Law
U.S. Comprehensive
U.S. Merchandising & Licensing
U.S. Design
Bundled Searches
U.S. Knock-Out & Design
U.S. Comprehensive & Design

Trademark Search Descriptions

U.S. Comprehensive Trademark Search
Our U.S. Comprehensive Trademark Search determines trademark availability in the United States. Our experienced analysts search the USPTO registers along with state trademark registers, related common law databases, corporate name directories and top level-domain registers to uncover pending and abandoned trademark applications, active and cancelled/expired registrations, business and trade names, domain names and full-text common law citations.
Databases Searched
USPTO, State, Common Law, Corporate Directories, Domain Name

U.S. Knock-Out Trademark Search
Our U.S. Knock-Out Trademark Search is a thorough but less time-consuming search to determine whether the proposed mark has been registered with the USPTO. Additionally, our Knock-Out Trademark Search uncovers pending and abandoned U.S. trademark applications and cancelled U.S. trademarks. If no mark of note is uncovered in a given Knock-Out Search, you may choose to go more in depth with our U.S. Comprehensive Trademark Search. If you choose to proceed with a U.S. Comprehensive Trademark Search within 30 days after ordering a Knock-Out Trademark Search, we are happy to discount the price of the Knock-Out Trademark Search from the price of the U.S. Comprehensive Trademark Search.
Databases Searched
USPTO

U.S. Design Trademark Search
Our Design Trademark Search looks for trademark design availability within the U.S. Our experienced analysts break down the design elements of the subject mark and utilize the same to uncover pending and abandoned U.S. trademark applications and registered and cancelled U.S. trademarks.
Databases Searched
USPTO

U.S. Merchandising/Licensing Trademark Search
Our U.S. Merchandising/Licensing Trademark Search determines the availability of a trademark to be used in merchandising campaigns across multiple unrelated industries within the U.S. Our analysts search the same databases as those used in our U.S. Comprehensive Trademark Search but expand the query to include product and service designations of multiple unrelated industries.
Databases Searched
USPTO, State, Common Law, Corporate Directories, Domain Name

U.S. Common Law Trademark Search
Our U.S. Common Law Trademark Search determines the use of a trademark in related industries within the U.S. Our analysts focus the results to include common law product and service designations.
Databases Searched
Common Law, Corporate Directories, Domain Names

U.S. Corporate Name Trademark Search
Our Corporate Name Search determines corporate name availability in the U.S. and searches the records of corporate directories such as D&B Dun’s Market Identifiers. This search is beneficial for corporations forming, merging, or qualifying their company.
Databases Searched
Corporate Directories

Trademark Search Descriptions

U.S. Comprehensive & Design Trademark Search
Our U.S. Comprehensive & Design Trademark Search combines the best of both worlds and includes our signature U.S. Comprehensive Trademark Search and our Design Trademark Search.
Databases Searched
USPTO, State, Common Law, Domain Name, Corporate Directories

U.S. Knock-Out & Design Trademark Search
Our U.S. Knock-Out & Design Trademark Search is particularly suited for marks containing both design elements and distinctive literal elements. This search takes our signature U.S. Design Trademark Search one step further by including our U.S. Knock-Out Trademark Search, to specifically uncover registered and cancelled U.S. trademarks and pending and abandoned U.S. trademark applications having literal elements that may be applicable to the literal elements of the subject design mark.
Databases Searched
USPTO

Expert Research Teams


Cardinal’s team of trademark attorneys generates unique strategies for each project. We develop custom queries to uncover relevant synonyms, phonetic equivalents and misspellings for the target mark. We use advanced searching techniques, broadened goods/services keywords, and related international classes to deliver the most relevant results.

Cardinal offers a wide variety of trademark searches tailored to meet your individual needs. Our trained analysts utilize advanced searching techniques coupled with the most up-to-date trademark databases to uncover registered, cancelled and expired U.S. Federal and State trademarks as well as pending and abandoned U.S. Federal trademark applications. Our analysts also utilize state-of-the-art common law searching techniques to comb through business directories, domain names registers, web pages, and other news, product, and marketing sources.

Detailed Search Results


With every trademark search project, you receive a full PDF report that includes summary tables, copies of all uncovered records in full citation format and a full search history that details the databases, classes and keywords used in the search. You also receive secure access to the report on IP Dashboard, Cardinal’s interactive, web-based report interface. On IP Dashboard, you can easily navigate the report to view records and images, to red flag and sort records of interest, to draft and save comments on records and to generate and download customized PDF reports.

Invalidity Search Options
  • Basic Validity

    U.S. & Worldwide Patents + Patent Publications & Non-Patent

    Includes

    • Independent Claims Only (Single Inventive Concept)
    • Essential NPL Searching
    • Claim Mapping / Analysis Available
    • 5-7 Business Days
    Quote
  • Standard Validity

    U.S. & Worldwide Patents + Patent Publications & Non-Patent

    Includes

    • Independent Claims Only (Single Inventive Concept)
    • Essential NPL Searching
    • Claim Mapping / Analysis Available
    • 5-7 Business Days
    Quote
  • Premium Validity

    U.S. & Worldwide Patents + Patent Publications & Non-Patent

    Includes

    • Independent Claims Only (Single Inventive Concept)
    • Essential NPL Searching
    • Claim Mapping / Analysis Available
    • 5-7 Business Days
    Quote
  • Redbird Validity

    U.S. & Worldwide Patents + Patent Publications & Non-Patent

    Includes

    • Independent Claims Only (Single Inventive Concept)
    • Essential NPL Searching
    • Claim Mapping / Analysis Available
    • 5-7 Business Days
    Quote