Prosecution Insights
Last updated: October 26, 2026

Catherine Serke Williams, USPTO Patent Examiner

Listed by the USPTO as WILLIAMS, CATHERINE SERKE

Tech Center 3900 • Art Units: 3772 3783 3993

This examiner grants 63% of resolved cases

Analysis

WILLIAMS, CATHERINE SERKE examines in tech center 3900 and art unit 3772. The profile contains 127 resolved cases, with an allowance rate of 63.0%. The median time to allowance is 1067 days, and the interview lift is 29.1%. The record indicates that interviews may have a material role in prosecution outcomes, while the case volume remains more limited than a large established docket.

The listed companies are Teleflex Life Sciences LLC, Stryker Corporation, and Boston Scientific Corporation. The firms are DeWitt LLP (Minneapolis), DORSEY & WHITNEY LLP - Minneapolis, and Faegre Drinker Biddle & Reath LLP - W.L. Gore. These entities give practitioners context for the medical technology work and representation appearing in the record.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

63.0%
Allow Rate
+3.0% vs TC avg
154
Total Applications
+29.1%
Interview Lift
1067
Avg Prosecution Days
Based on 127 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
9.8%
§102 Novelty
32.1%
§103 Obviousness
21.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18970413 Implant for Bone Fixation Non-Final OA Stryker European Operations Holdings LLC
18761439 MEDICAL ACCESS CANNULAS AND ASSOCIATED METHODS Non-Final OA Boston Scientific Scimed, Inc.
18784174 SURGICAL CLIP APPLIER WITH PARALLEL CLOSURE JAWS Non-Final OA Cilag GMBH International
18970384 LASER INSTRUMENT FOR EYE THERAPY Non-Final OA Carl Zeiss Meditec AG

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Frequently Asked Questions

What is examiner Catherine Serke Williams's allowance rate?

63.0% of resolved applications examined by Catherine Serke Williams were allowed (127 resolved cases), compared with 39.7% across Art Unit 3772 over the last five years.

Does an interview help with examiner Catherine Serke Williams?

This examiner's interview lift is +29.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Catherine Serke Williams take to allow a patent?

Applications allowed by Catherine Serke Williams took 1,067 days on average from filing to allowance.

Which art unit does examiner Catherine Serke Williams work in?

Catherine Serke Williams examines applications in Art Unit 3772 in Tech Center 3900.

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