PTAB Experts

A new expansion for Docket Navigator’s patent library.

Patent litigation is often described as a battle of the experts. But if you’ve ever searched for an expert in a highly specific technology field, you’ve no doubt discovered that finding the perfect candidate is a challenging task.

Docket Navigator’s new PTAB Experts search can help with just a few clicks. We scoured PTAB case records and extracted a treasure trove of expert witness information which is now accessible to Docket Navigator patent library users in the new PTAB Experts search, and the new PTAB Expert profiles.

Search PTAB Experts

Try it now

The PTAB Expert search target is located in the Custom Search section of the main search page.

Search results for a PTAB expert will contain a list of names that match your filters.  Click on any name to view that expert’s profile.

Explore a specific PTAB Expert

View an example

If you know the name of the expert that you are looking for, type it in the PTAB Expert search box under the Profile section of the main search page.

When you land on an expert profile, you’ll find a dashboard of information and a list of tabs with information pertaining to the expert.  Most data points contained in the dashboard can be clicked on to view the underlying data.

PTAB Expert Witness Tool Methodology

We collect PTAB expert witness data from the PTAB using a novel, semi-automated process supplemented by human editors.

  1. We scrape exhibit lists from various documents, primarily petitions and responses, to identify declarations filed in the proceeding.
  2. We examine the text of each declaration to determine whether it is an expert declaration originally filed in this case. Attorneys, fact witnesses, and other types of non-expert declarations are filtered out using a combination of two techniques:
    • A rules-based technique looks for hints in the text, such as “I have been retained by [party] as a technical expert”
    • A machine learning technique broadly examines all features of the document, such as the declarant’s writing style and paragraph organization, to determine whether the given document is an expert declaration.
  3. A portion of the declarations are set aside for manual review by our team for various reasons, including rules conflicts and low prediction confidence scores.
  4. An automatic text labeling technique is used to detect the names of experts in these cases. All expert names are reviewed by the Docket Navigator team (for example, to verify that “Anne Smith” and “Annette B. Smith” are the same person).

Our internal tests found that about 97% of expert witnesses are accurately associated with PTAB proceedings using this method. Because the first digit of a PTAB filing’s docket number indicates the filer’s role, we expect expert-party associations to be highly accurate.