Prosecution Insights
Last updated: October 27, 2026

Zachary A Hall, USPTO Patent Examiner

Listed by the USPTO as HALL, ZACHARY A

Tech Center 3600 • Art Units: 3678

This examiner grants 62% of resolved cases

Analysis

HALL, ZACHARY A is a USPTO patent examiner in tech center 3600 and art unit 3678. Across 151 resolved cases, the allowance rate is 61.6%, and the median time to allowance is 1195 days. The 49.4% interview lift indicates a strong positive association between interviews and allowance outcomes in the measured cases.

The leading companies are Exedy Corporation, Gkn Driveline Zumaia SA, and Illinois Tool Works Inc. The leading firms are Arent Fox LLP and Divergent Technologies Inc., FITCH EVEN TABIN & FLANNERY, LLP, and FOLEY & LARDNER LLP. Interview planning may be especially relevant for counsel handling similar matters.

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

Performance Statistics

61.6%
Allow Rate
+9.6% vs TC avg
184
Total Applications
+49.4%
Interview Lift
1195
Avg Prosecution Days
Based on 151 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
36.5%
§102 Novelty
47.4%
§103 Obviousness
15.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19095856 Grommet and Fastening Assembly Non-Final OA Illinois Tool Works Inc.
18697659 BALL JOINT SEAL STRUCTURE AND FERRULE RING MOUNTING METHOD Final Rejection NOK CORPORATION
18672668 CONNECTING TOOL AND CONNECTING STRUCTURE Non-Final OA YKK Corporation

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Frequently Asked Questions

What is examiner Zachary A Hall's allowance rate?

61.6% of resolved applications examined by Zachary A Hall were allowed (151 resolved cases), compared with 61.4% across Art Unit 3678 over the last five years.

Does an interview help with examiner Zachary A Hall?

This examiner's interview lift is +49.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Zachary A Hall take to allow a patent?

Applications allowed by Zachary A Hall took 1,195 days on average from filing to allowance.

Which art unit does examiner Zachary A Hall work in?

Zachary A Hall examines applications in Art Unit 3678 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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