Prosecution Insights
Last updated: October 27, 2026

Yong Soo Chong, USPTO Patent Examiner

Listed by the USPTO as CHONG, YONG SOO

Tech Center 1600 • Art Units: 1617 1623 1627

This examiner grants 44% of resolved cases

Analysis

CHONG, YONG SOO works in Tech Center 1600 and Art Unit 1617. The profile reports 892 resolved cases, a 43.8% allowance rate, and a median of 1425 days to allowance. Interview lift is 41.8%, identifying a meaningful positive association between interviews and allowance outcomes despite the lower overall allowance rate in this record.

The leading companies are Schedule 1 Therapeutics Inc., Metabolic Technologies, LLC, and Novartis AG. The principal firms are Dentons Davis Brown PC, GOODWIN PROCTER LLP, and POLSINELLI PC (Main Customer Number). Practitioners may want to emphasize interview preparation and maintain sufficient prosecution runway for a docket with extended median timing.

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

Performance Statistics

43.8%
Allow Rate
-16.2% vs TC avg
958
Total Applications
+41.8%
Interview Lift
1425
Avg Prosecution Days
Based on 892 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
21.2%
§102 Novelty
52.8%
§103 Obviousness
17.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18566259 SUBSTITUTED INDOLE COMPOUNDS AND METHODS OF USE THEREOF Final Rejection NOVARTIS PHARMA AG
17760090 ELONGATION FACTOR 1-ALPHA INHIBITORS AND USES THEREOF Non-Final OA The Regents of the University of California
18785196 PROPHYLACTIC AND/OR THERAPEUTIC AGENT FOR BEHAVIORAL AND PSYCHOLOGICAL SYMPTOMS ASSOCIATED WITH NEURODEGENERATIVE DISEASE OR IMPULSIVE SYMPTOMS ASSOCIATED WITH MENTAL DISEASE CONTAINING BREXPIPRAZOLE OR SALT THEREOF Final Rejection OTSUKA PHARMACEUTICAL CO., LTD.
18740833 SMALL MOLECULE TRAIL GENE INDUCTION BY NORMAL AND TUMOR CELLS AS AN ANTICANCER THERAPY Non-Final OA The Penn State Research Foundation
18835242 METHODS OF PREPARING AND CRYSTALLINE FORMS OF (6A,12A)-17-AMINO-12-METHYL-6,15-BIS(TRIFLUOROMETHYL)-13,19-DIOXA-3,4,18-TRIAZATRICYCLO[12.3.1.12,5]NONADECA-1(18),2,4,14,16-PENTAEN-6-OL Non-Final OA Vertex Pharmaceuticals Incorporated
18038821 SIRTUIN 6 ACTIVATOR Final Rejection KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
17916191 NEW COMPOSITIONS FOR ORAL OR NASAL USE Final Rejection md&c Creative Maison SA

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Who Appears Before This Examiner

Top companies before this examiner

Law firms appearing most often

Frequently Asked Questions

What is examiner Yong Soo Chong's allowance rate?

43.8% of resolved applications examined by Yong Soo Chong were allowed (892 resolved cases), compared with 34.1% across Art Unit 1617 over the last five years.

Does an interview help with examiner Yong Soo Chong?

This examiner's interview lift is +41.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yong Soo Chong take to allow a patent?

Applications allowed by Yong Soo Chong took 1,425 days on average from filing to allowance.

Which art unit does examiner Yong Soo Chong work in?

Yong Soo Chong examines applications in Art Unit 1617 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month