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We understand the importance of thorough, in-depth patent research. Our veteran search professionals dig deep, drawing on their subject matter expertise and utilizing the best strategies and technologies to efficiently uncover the information you need.

With every search project, you receive a report that maps the results to your search goals. PDF copies of the references cited in most searches are accessible directly through our Search Report System. You’ll also receive a search history detailing the databases, classes and keywords used in the search. Standard search coverage includes English-based patent and non-patent literature, as well as English abstracts of many foreign language patents and published applications. Foreign-language specialists may be added to a project team to perform research on the full text of non-English documents. Each research project is facilitated by a project manager who is experienced in their technical field, and who acts as a valuable liaison – before, during and after each project.

We can customize specific
search strategies with you.

Searches Include

  • Full search report with prior art
  • Full text of the selected patents
  • History and analysis document
    (if requested)
  • Search of U.S. Patents/Applications
    and Foreign Patents
  • Variety of Non-Patent technical
    journals and databases

Cardinal has experts
in all subject categories

    Life Sciences
    Biotechnology
    Physical Sciences
    Chemical
    Electrical
    Communications
    Mechanical
    Computer & Information Sciences
    Business Methods

CLICK HERE For Full List
Patent Searches

Invalidity Search
or Validity Search

An Invalidity or Validity Search identifies prior art references that may be used alone or in combination to contest the validity of the claims in a patent or patent application. Search results may include published applications and issued patents, both US and foreign, as well as non-patent literature such as scientific journals and papers. Only references disclosing the claim limitations are included in the results, and our search professionals highlight the relevant segments that relate to the claim elements. In addition, search professionals can provide a mapping between the highlighted segments and the corresponding claim limitations.


$2000 Start
Cap Prices Available.
Call For A Free Detailed Quote.

Typically completed within 4-5 business days.
Analysis is available, for an additional fee, and maps applicable reference excerpts to each claim.

All prices are approximations and subject to change due to multiple variables.

Call 847.905.7122 or Click Here
For a detailed quote.
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