Prosecution Insights
Last updated: October 02, 2026

Examiner: CHEONG, CHEOM-GIL

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

This examiner grants 64% of resolved cases

Analysis

Examiner Cheom-Gil Cheong operates within Tech Center 1700 and Art Unit 1643, where they have managed 190 resolved cases. The data shows an allowance rate of 64.2%, which provides a baseline for expectations during prosecution. A notable metric for practitioners is the interview lift of 52.6%, suggesting that personal engagement with this examiner may improve the probability of an allowance compared to the 64.2% baseline. This lift indicates that interviews are a productive tool for moving toward a grant in this specific queue.

The timeline for reaching a final disposition is also a factor, as the median days to allowance stands at 1215. This duration reflects the typical path for successful applications in this examiner's portfolio. Given the interview lift of 52.6%, attorneys might prioritize early interviews to navigate the 1215 days of pendency. With 190 resolved cases, the examiner has established a consistent pattern of behavior in Art Unit 1643. Practitioners should prepare for a prosecution cycle that typically lasts 1215 days while leveraging the 64.2% allowance rate to their advantage.

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

Performance Statistics

64.2%
Allow Rate
-0.8% vs TC avg
222
Total Applications
+52.6%
Interview Lift
1215
Avg Prosecution Days
Based on 190 resolved cases, 2023–2026

Rejection Statute Breakdown

3.1%
§101 Eligibility
16.1%
§102 Novelty
24.5%
§103 Obviousness
37.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18270429 COMPOUNDS, KITS, AND METHODS FOR BEAD-BASED DETECTION OF ANTI-MICROBE ANTIBODIES Final Rejection Quest Diagnostics Investments LLC
16771510 Inducible Cell Receptors for Cell-Based Therapeutics Non-Final OA Trustees of Boston University
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
18429870 Cutibacterium Acnes Biomimetic, Prebiotic, Probiotic and Postbiotic Compositions for Treatment of Skin Conditions Non-Final OA Johnson & Johnson Consumer Inc.
18692937 METHODS FOR TREATING NEUROINFLAMMATION Non-Final OA University of Virginia Patent Foundation
18672417 POLYPEPTIDE INCLUDING ANTIGEN-BINDING DOMAIN AND CARRYING SECTION Non-Final OA CHUGAI SEIYAKU KABUSHIKI KAISHA
18150466 ALTERNATIVE SURFACTANTS AS STABILIZERS FOR THERAPEUTIC PROTEIN FORMULATIONS Non-Final OA Hoffmann-La Roche Inc.
18189874 METHODS, DEVICE, KIT AND COMPOSITIONS FOR DETECTING FELINE LUNGWORM Non-Final OA Idexx Laboratories, Inc.
18704632 MALARIA VACCINE FORMULATIONS Non-Final OA NOVAVAX, INC.
16823313 INSECT PRODUCTION SYSTEMS AND METHODS Final Rejection INSECTERGY, LLC
18564618 INDICATOR MOLECULE FOR TOXIGENICITY OF AFLATOXIGENIC FUNGI AND USE THEREOF Final Rejection OIL CROPS RESEARCH INSTITUTE, CHINESE ACADEMY OF AGRICULTURAL SCIENCES

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