Prosecution Insights
Last updated: October 26, 2026

Hyun D Park, USPTO Patent Examiner

Listed by the USPTO as PARK, HYUN D

Tech Center 2800 • Art Units: 2695 2857 2863 2865

This examiner grants 42% of resolved cases

Analysis

This record includes 620 resolved cases in Tech Center 2800 and Art Unit 2695. The allowance rate is 41.8%, with a median of 1530 days to allowance. Interview lift is 22.5%, showing a positive association that may help address examination issues despite the lower allowance result.

The listed companies are Saudi Arabian Oil Company, Apple Inc., and Halliburton Energy Services Inc. The listed firms are Bracewell LLP, HAUPTMAN HAM, LLP, and BIRCH STEWART KOLASCH & BIRCH, LLP. The data supports early preparation of amendment options and close monitoring of prosecution timing.

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

Performance Statistics

41.8%
Allow Rate
-26.2% vs TC avg
701
Total Applications
+22.5%
Interview Lift
1530
Avg Prosecution Days
Based on 620 resolved cases, 2023–2026

Rejection Statute Breakdown

25.0%
§101 Eligibility
10.7%
§102 Novelty
38.8%
§103 Obviousness
20.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18406132 PROGRESSIVE TRANSMIT DELAYS FOR SYSTEMATIC TIME-DEPENDENT ERROR ELIMINATION IN LiDAR Final Rejection Samsung Electronics Co., Ltd.
15736184 MULTIPOINT MEASUREMENTS FOR WELLBORE RANGING Non-Final OA HALLIBURTON ENERGY SERVICES, INC.
18559555 FIT DETECTION SYSTEM FOR HEAD-MOUNTABLE DEVICES Non-Final OA Apple Inc.
18205478 STRIDE LENGTH ESTIMATION AND CALIBRATION AT THE WRIST Final Rejection Apple Inc.
18116042 Dedicated Telemetry Subsystem For Telemetry Data Non-Final OA Google LLC
18294257 INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, PROGRAM, AND INFORMATION PROCESSING SYSTEM Final Rejection SONY GROUP CORPORATION
17718616 COMPONENT DAMAGE AND SALVAGE ASSESSMENT Final Rejection STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANY
18282501 METHOD FOR ESTIMATING STATE OF HEALTH OF LITHIUM-SULFUR BATTERY Final Rejection LG ENERGY SOLUTION, LTD.
18750771 BATTERY MONITORING DEVICE, AND BATTERY MANAGEMENT SYSTEM Non-Final OA DENSO CORPORATION
17096898 Fail Density-Based Clustering for Yield Loss Detection Final Rejection Texas Instruments Incorporated
18376121 SENSING DATA CORRECTION SYSTEM AND SENSING DATA CORRECTION METHOD Final Rejection Hitachi, Ltd.
18019054 TOOL DRIFT COMPENSATION WITH MACHINE LEARNING Non-Final OA Applied Materials, Inc.
18623427 METHOD FOR ESTIMATING THE SIZE OF A SURFACE DEFECT OF A BEARING, AND ASSOCIATED BEARING DEVICE Non-Final OA Aktiebolaget SKF
18726345 APPARATUS, SYSTEM, AND METHOD FOR MEASURING SOIL CONDITIONS Non-Final OA AGCO Corporation
17894611 MULTIPLE SAMPLE ANALYSIS METHOD Non-Final OA SHIMADZU CORPORATION
18207464 METER VOLTAGE FINGERPRINT Final Rejection Utilidata, Inc.

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Frequently Asked Questions

What is examiner Hyun D Park's allowance rate?

41.8% of resolved applications examined by Hyun D Park were allowed (620 resolved cases), compared with 73.9% across Art Unit 2695 over the last five years.

Does an interview help with examiner Hyun D Park?

This examiner's interview lift is +22.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Hyun D Park take to allow a patent?

Applications allowed by Hyun D Park took 1,530 days on average from filing to allowance.

Which art unit does examiner Hyun D Park work in?

Hyun D Park examines applications in Art Unit 2695 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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