Infringement / Non-Infringement Search

An Infringement or Non-Infringement Search identifies patents having claims that may read on a prospective product or service.

Prior to conducting the Infringement / Non-Infringement Search, Cardinal’s research team will work with you to establish the features of the product or service that should be considered for infringement. With this information, our experienced analysts will conduct a search, identify relevant patents, and highlight claims within the relevant patents  in the search report. The Infringement / Non-Infringement Search scope may be limited to active U.S. patents, or  may be expanded to include foreign patent references.

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Infringement Search Strategy

  • Identification of Best Fit Classes
  • Keyword Searching
    • Classification-limited keyword searching
    • Keyword searching not limited by classifications


Infringement References Cited

  • Active U.S. Patents


Infringement Reference Status

  • Status as reported on front page of Public PAIR
    (for all U.S. references in report)


Infringement Delivery Methods

  • PDF version of report (via e-mail)
  • IP Dashboard Search Report System (web-based report interface)
    • PDF copies of each reference
    • Zipped bulk download of all references


Infringement Additional Add-On Services

  • Published U.S. Patent Applications
  • Additional Jurisdictions
  • USPTO Maintenance Fee Payment Check
  • Estimate of Patent Expiration Date¹
  • Additional Distinct Features²


Infringement Turnaround Time***

  • 5-10 Business Days

¹Cardinal uses a mathematical algorithm to determine an estimated patent expiration date.
This is for convenience only and is not a legal determination of the exact expiration date.
²Prices vary with extent and overlap with existing features.
***All turnaround times are approximations and are subject to change.