Prosecution Insights
Last updated: October 27, 2026

Youngsul Jeong, USPTO Patent Examiner

Listed by the USPTO as JEONG, YOUNGSUL

Tech Center 1700 • Art Units: 1772

This examiner grants 72% of resolved cases

Analysis

JEONG, YOUNGSUL handles cases in USPTO Tech Center 1700 and Art Unit 1772. The profile includes 743 resolved cases, with a 71.6% allowance rate and a median of 1001 days to allowance. Interview lift is 21.7%, showing a measurable but more limited association between interviews and outcomes than the allowance measure itself.

The recorded companies are Mann+hummel GmbH, Mann+Hummel Life Sciences & Environment Holding Singapore Pte. Ltd., and Precision Planting LLC. The listed firms are Dority & Manning, P.A. and Haier US Appliance, FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, and Lathrop GPM LLP. The sizable record supports structured planning for claim amendments and prosecution timing.

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

Performance Statistics

71.6%
Allow Rate
+6.6% vs TC avg
769
Total Applications
+21.7%
Interview Lift
1001
Avg Prosecution Days
Based on 743 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
7.2%
§102 Novelty
60.7%
§103 Obviousness
27.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18905059 SYSTEM FOR DESALINATING WATER WITH VACUUM MEMBRANE DISTILLATION Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
18442729 WATER FILTER ASSEMBLY AND METHOD FOR FLOW RECOVERY Non-Final OA Haier US Appliance Solutions, Inc.
18510767 Filter System with a Filter Element and a Safety Assembly, a Safety Assembly, and a Filter Element Non-Final OA MANN+HUMMEL GmbH
18510751 Filter System with a Filter Element and a Safety Assembly, a Safety Assembly, and a Filter Element Non-Final OA MANN+HUMMEL GmbH
18180203 Filter System and Filter Element Final Rejection MANN+HUMMEL GmbH

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Frequently Asked Questions

What is examiner Youngsul Jeong's allowance rate?

71.6% of resolved applications examined by Youngsul Jeong were allowed (743 resolved cases), compared with 59.5% across Art Unit 1772 over the last five years.

Does an interview help with examiner Youngsul Jeong?

This examiner's interview lift is +21.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Youngsul Jeong take to allow a patent?

Applications allowed by Youngsul Jeong took 1,001 days on average from filing to allowance.

Which art unit does examiner Youngsul Jeong work in?

Youngsul Jeong examines applications in Art Unit 1772 in Tech Center 1700 (Chemistry & Materials).

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