Prosecution Insights
Last updated: October 26, 2026

Sangkyung Lee, USPTO Patent Examiner

Listed by the USPTO as LEE, SANGKYUNG

Tech Center 3600 • Art Units: 2855 2857 2858 2859 2866 3619 3671

This examiner grants 59% of resolved cases

Analysis

LEE, SANGKYUNG examines in Tech Center 3600 and Art Unit 2855. The record includes 167 resolved cases and an allowance rate of 59.3%. The median time to allowance is 1066 days, indicating a substantial prosecution interval that should be incorporated into applicant planning.

Interviews show a 9.5% lift, providing a measurable but limited interview signal in this dataset. Safran, Airbus, and Seiko Epson are the leading listed companies. HARNESS DICKEY, BIRCH STEWART KOLASCH & BIRCH, and BRAKE HUGHES BELLERMANN are the leading listed firms. The listed companies indicate aerospace and precision technology activity.

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

Performance Statistics

59.3%
Allow Rate
+7.3% vs TC avg
213
Total Applications
+9.5%
Interview Lift
1066
Avg Prosecution Days
Based on 167 resolved cases, 2023–2026

Rejection Statute Breakdown

25.7%
§101 Eligibility
12.2%
§102 Novelty
54.1%
§103 Obviousness
7.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18713562 METHOD FOR AUTOMATICALLY DIAGNOSING A PART Non-Final OA SAFRAN AIRCRAFT ENGINES
18033676 METHOD FOR ASSESSING THE SERVICE LIFE OF A TURBINE ENGINE PART Non-Final OA SAFRAN AIRCRAFT ENGINES
18311323 ARRANGEMENT INCLUDING A FIBER-REINFORCED COMPOSITE COMPONENT OR ASSEMBLY, AIRCRAFT OR SPACECRAFT, METHOD OF PRODUCING AN ARRANGEMENT, AS WELL AS METHOD OF MONITORING STRUCTURAL INTEGRITY Non-Final OA Airbus SAS
18017778 INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM Final Rejection Sony Group Corporation
18160783 Measurement Method, Sensor Device, And Inertial Measurement Device Final Rejection SEIKO EPSON CORPORATION
18687716 BATTERY STATE ESTIMATION METHOD AND BATTERY SYSTEM PROVIDING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
18371461 BATTERY DIAGNOSIS DEVICE AND METHOD Non-Final OA Kia Corporation
18646120 BATTERY DIAGNOSTIC SYSTEM Non-Final OA DENSO CORPORATION
18591020 DETECTION METHOD AND DETECTION APPARATUS FOR ELECTRODE PLATE AND STACKING SYSTEM Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
18613635 DETECTING RECHARGEABLE BATTERY SUPPLIER CELL BASED ON MEASURING CHARGE/DISCHARGE DV/DT Non-Final OA Continental Automotive Systems, Inc.
18638299 CHARGING DEVICE, SERVER, AND DIAGNOSTIC SYSTEM Non-Final OA MURATA MANUFACTURING CO., LTD.
18215861 INTELLIGENT BRIDGE CONDITION MONITORING Non-Final OA INTERNATIONAL BUSINESS MACHINES CORPORATION
18735377 DEVICE FOR CALIBRATING A SPALL PROPAGATION MODEL OF A BEARING AND ASSOCIATED METHOD AND SYSTEM Non-Final OA Aktiebolaget SKF
18521178 SHOVEL CONTROL DEVICE AND SHOVEL Final Rejection SUMITOMO HEAVY INDUSTRIES, LTD.

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Frequently Asked Questions

What is examiner Sangkyung Lee's allowance rate?

59.3% of resolved applications examined by Sangkyung Lee were allowed (167 resolved cases), compared with 76.8% across Art Unit 2855 over the last five years.

Does an interview help with examiner Sangkyung Lee?

This examiner's interview lift is +9.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Sangkyung Lee take to allow a patent?

Applications allowed by Sangkyung Lee took 1,066 days on average from filing to allowance.

Which art unit does examiner Sangkyung Lee work in?

Sangkyung Lee examines applications in Art Unit 2855 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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