Prosecution Insights
Last updated: October 27, 2026

Carter W Ferrell, USPTO Patent Examiner

Listed by the USPTO as FERRELL, CARTER W

Tech Center 3600 • Art Units: 2857 2863 3625

This examiner grants 62% of resolved cases

Analysis

FERRELL, CARTER W has 126 resolved cases in Tech Center 3600 and art unit 2857. The allowance rate is 61.9%, the interview lift is 47.6%, and the median time to allowance is 1138 days. The smaller resolved-case record calls for measured interpretation, but the figures show an interview effect that is substantial relative to the allowance outcome.

The listed companies are Chevron Corporation, Volvo Group, and Siemens Healthineers AG. The listed firms are BANNER & WITCOFF, LTD., Nelson Mullins Riley & Scarborough LLP, and Patent Portfolio Builders, PLLC. Practitioners may place interviews prominently in response planning, using claim charts and defined amendment positions while documenting any resulting understanding in the written record.

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

Performance Statistics

61.9%
Allow Rate
+9.9% vs TC avg
148
Total Applications
+47.6%
Interview Lift
1138
Avg Prosecution Days
Based on 126 resolved cases, 2023–2026

Rejection Statute Breakdown

23.8%
§101 Eligibility
7.9%
§102 Novelty
43.4%
§103 Obviousness
23.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18756115 ARRANGEMENT FOR LEAKAGE DETECTION IN A COOLING SYSTEM Non-Final OA VOLVO TRUCK CORPORATION
18240498 Communication Method and Communication Apparatus for MRI Device Final Rejection Siemens Healthcare GmbH
18696204 METHOD AND SYSTEM FOR SEISMIC ANOMALY DETECTION Non-Final OA ExxonMobil Technology and Engineering Company

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Frequently Asked Questions

What is examiner Carter W Ferrell's allowance rate?

61.9% of resolved applications examined by Carter W Ferrell were allowed (126 resolved cases), compared with 72.0% across Art Unit 2857 over the last five years.

Does an interview help with examiner Carter W Ferrell?

This examiner's interview lift is +47.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Carter W Ferrell take to allow a patent?

Applications allowed by Carter W Ferrell took 1,138 days on average from filing to allowance.

Which art unit does examiner Carter W Ferrell work in?

Carter W Ferrell examines applications in Art Unit 2857 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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