Prosecution Insights
Last updated: October 26, 2026

Cheom-Gil Cheong, USPTO Patent Examiner

Listed by the USPTO as CHEONG, CHEOM-GIL

Tech Center 1700 • Art Units: 1643 1645 1672 1674 1699 1793

This examiner grants 64% of resolved cases

Analysis

CHEONG, CHEOM-GIL works in tech center 1700 and art unit 1643, with 192 resolved cases. The allowance rate is 64.1%, and the median time to allowance is 1214 days. The interview lift is 53.1%, making interviews the most prominent positive feature in this profile and a practical focus for response planning.

The companies represented are Hoffmann-La Roche Inc., Trustees of Boston University, and Wisconsin Alumni Research Foundation. The leading firms are DUANE MORRIS LLP - Quest Diagnostics, HAUG PARTNERS LLP, and JCIPRNET. Counsel should prepare for a substantial timeline while using interviews to clarify issues and advance prosecution.

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

Performance Statistics

64.1%
Allow Rate
-0.9% vs TC avg
226
Total Applications
+53.1%
Interview Lift
1214
Avg Prosecution Days
Based on 192 resolved cases, 2023–2026

Rejection Statute Breakdown

3.3%
§101 Eligibility
16.1%
§102 Novelty
24.6%
§103 Obviousness
37.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
16979209 COMPOSITIONS AND METHODS FOR DETECTING MYCOBACTERIUM TUBERCULOSIS Non-Final OA THE JOHNS HOPKINS UNIVERSITY
18683538 POSTBIOTIC Final Rejection SOCIETE DES PRODUITS NESTLE S.A.
18623995 REGULATOR OF TUMOR CELL FUNCTIONS AND USES THEREOF Non-Final OA Washington University
18692937 METHODS FOR TREATING NEUROINFLAMMATION Non-Final OA University of Virginia Patent Foundation
19037765 ANTI-BLOOD DENDRITIC CELL ANTIGEN 2 ANTIBODIES AND USES THEREOF Non-Final OA Biogen MA Inc.
16095563 METHODS FOR DETERMINING DPP3 AND THERAPEUTIC METHODS Non-Final OA 4TEEN4 PHARMACEUTICALS GMBH

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Frequently Asked Questions

What is examiner Cheom-Gil Cheong's allowance rate?

64.1% of resolved applications examined by Cheom-Gil Cheong were allowed (192 resolved cases), compared with 41.5% across Art Unit 1643 over the last five years.

Does an interview help with examiner Cheom-Gil Cheong?

This examiner's interview lift is +53.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Cheom-Gil Cheong take to allow a patent?

Applications allowed by Cheom-Gil Cheong took 1,214 days on average from filing to allowance.

Which art unit does examiner Cheom-Gil Cheong work in?

Cheom-Gil Cheong examines applications in Art Unit 1643 in Tech Center 1700 (Chemistry & Materials).

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