Prosecution Insights
Last updated: October 26, 2026

Brandon Sung Eun Lee, USPTO Patent Examiner

Listed by the USPTO as LEE, BRANDON SUNG EUN

Tech Center 3600 • Art Units: 3617 3661 3668 3671

This examiner grants 72% of resolved cases

Analysis

LEE, BRANDON SUNG EUN has 25 resolved cases, with a 72.0% allowance rate and a 26.4% interview lift. The median time to allowance is 860 days. The record places this examiner in Tech Center 3600 and Art Unit 3617. The combination of a 72.0% allowance rate and positive interview lift indicates that interview preparation may be relevant when prosecution reaches a difficult point.

The listed company work includes Toyota Motor Corporation, Deere & Company, and Honda Motor Co., Ltd. The leading firms are CARLSON, GASKEY & OLDS, P.C., Eversheds Sutherland (US) LLP, and FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER. Practitioners handling matters in this docket can use these organizations as signals of the examiner’s recurring technology and prosecution context, while the 860-day median supports attention to claim strategy early in prosecution.

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

Performance Statistics

72.0%
Allow Rate
+20.0% vs TC avg
49
Total Applications
+26.4%
Interview Lift
860
Avg Prosecution Days
Based on 25 resolved cases, 2023–2026

Rejection Statute Breakdown

17.6%
§101 Eligibility
22.2%
§102 Novelty
44.9%
§103 Obviousness
15.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19050477 MACHINE LEARNING OPTIMIZATION THROUGH RANDOMIZED AUTONOMOUS CROP PLANTING Non-Final OA Deere & Company
18629203 CONTINUOUS MATERIAL APPLICATION RATE CALIBRATION WITH ERROR IDENTIFICATION AND CAUSE IDENTIFICATION CART TANK CONTENTS Non-Final OA Deere & Company
18804976 BATTERY ELECTRIC VEHICLE Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18405054 SERVER DEVICE Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18370078 CONTROL DEVICE AND CONTROL METHOD FOR VEHICLE Non-Final OA HONDA MOTOR CO., LTD.
18864158 SPEED CONTROL SYSTEM FOR A VEHICLE AND METHOD Final Rejection JAGUAR LAND ROVER LIMITED
18500007 INTERFACE FOR EXTERNAL VEHICLE CONTROL Final Rejection Ford Global Technologies, LLC

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Frequently Asked Questions

What is examiner Brandon Sung Eun Lee's allowance rate?

72.0% of resolved applications examined by Brandon Sung Eun Lee were allowed (25 resolved cases), compared with 61.5% across Art Unit 3617 over the last five years.

Does an interview help with examiner Brandon Sung Eun Lee?

This examiner's interview lift is +26.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Brandon Sung Eun Lee take to allow a patent?

Applications allowed by Brandon Sung Eun Lee took 860 days on average from filing to allowance.

Which art unit does examiner Brandon Sung Eun Lee work in?

Brandon Sung Eun Lee examines applications in Art Unit 3617 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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