Prosecution Insights
Last updated: October 26, 2026

Eunsook Choi, USPTO Patent Examiner

Listed by the USPTO as CHOI, EUNSOOK

Tech Center 2600 • Art Units: 2419 2467 2619

This examiner grants 90% of resolved cases

Analysis

CHOI, EUNSOOK is assigned to Tech Center 2600 and Art Unit 2419. The profile covers 876 resolved cases, a 90.2% allowance rate, and a median of 916 days to allowance. The interview lift is 7.4%, providing a positive association with allowance outcomes.

Samsung Electronics Co., Ltd., Huawei Technologies Co., Ltd., and Qualcomm Incorporated are the listed leading companies. AMPACC Law Group, PLLC, Arch & Lake LLP, and Chiesa Shahinian & Giantomasi PC are the listed leading firms. Interview use can be considered within a prosecution approach that also addresses the reported pendency.

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

Performance Statistics

90.2%
Allow Rate
+28.2% vs TC avg
899
Total Applications
+7.4%
Interview Lift
916
Avg Prosecution Days
Based on 876 resolved cases, 2023–2026

Rejection Statute Breakdown

6.2%
§101 Eligibility
23.2%
§102 Novelty
44.4%
§103 Obviousness
11.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18798705 METHOD AND APPARATUS FOR MEASUREMENT CONFIGURATION IN WIRELESS COMMUNICATION SYSTEM Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18834512 METHOD AND SYSTEM FOR OPERATING MULTI-SIM DEVICE WITH MULTIPLE RRC CONNECTION SUPPORT IN 5G NETWORK Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18919656 INITIAL ACCESS METHOD AND COMMUNICATION APPARATUS Non-Final OA HUAWEI TECHNOLOGIES CO., LTD.
18899216 COMMUNICATION METHOD AND COMMUNICATION APPARATUS Non-Final OA Huawei Technologies Co., Ltd.
18823619 DCI CONTENT AND MODIFIED CODEBOOK TYPE 3 HARQ PUCCH CONTENT FOR DEFERRED SPS PUCCH ACK/NACK Non-Final OA QUALCOMM Incorporated
18711563 SSB-SUBSET SELECTION BASED RACH WITH BASE STATION-SIDE BEAM PREDICTION Final Rejection QUALCOMM Incorporated
18040342 RADIO COMMUNICATION NODE Non-Final OA NTT DOCOMO, INC.
18860387 CONTENTION WINDOW SIZE FOR UNLICENSED OPERATION Non-Final OA Lenovo (Singapore) Pte. Limited
18846116 METHOD FOR TRAINING AND DEPLOYING MODEL AND COMMUNICATION DEVICE Non-Final OA BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
18919838 COMMUNICATION METHOD AND COMMUNICATIONS APPARATUS Non-Final OA GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

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Frequently Asked Questions

What is examiner Eunsook Choi's allowance rate?

90.2% of resolved applications examined by Eunsook Choi were allowed (876 resolved cases), compared with 77.3% across Art Unit 2419 over the last five years.

Does an interview help with examiner Eunsook Choi?

This examiner's interview lift is +7.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Eunsook Choi take to allow a patent?

Applications allowed by Eunsook Choi took 916 days on average from filing to allowance.

Which art unit does examiner Eunsook Choi work in?

Eunsook Choi examines applications in Art Unit 2419 in Tech Center 2600 (Communications).

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