Prosecution Insights
Last updated: October 26, 2026

Himchan Song, USPTO Patent Examiner

Listed by the USPTO as SONG, HIMCHAN

Tech Center 3700 • Art Units: 3658 3731 3761

This examiner grants 86% of resolved cases

Analysis

SONG, HIMCHAN is assigned to Tech Center 3700 and Art Unit 3658. The data records 266 resolved cases, an 86.5% allowance rate, and a median of 863 days to allowance. Interview lift is 11.9%, indicating a modest positive association that may support interviews when they address defined prosecution issues.

Bobst Mex S.A., Royal Houdijk B V, and Hosokawa Yoko Co., Ltd. are the listed companies. Bookoff McAndrews, PLLC, Law Office of Katsuhiro Arai, and Shumaker, Loop & Kendrick, LLP are the listed firms. Counsel can plan around a favorable allowance result and stated timing while using interviews selectively to supplement focused written advocacy.

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

Performance Statistics

86.5%
Allow Rate
+16.5% vs TC avg
277
Total Applications
+11.9%
Interview Lift
863
Avg Prosecution Days
Based on 266 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
27.4%
§102 Novelty
39.0%
§103 Obviousness
31.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19422918 A METHOD FOR MANUFACTURING A PATCHING SHEET AND A CARDBOARD PROCESSING SYSTEM Non-Final OA BOBST MEX SA
19480300 ELECTRIC TOOL Final Rejection Panasonic Electric Works Co., Ltd.

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Frequently Asked Questions

What is examiner Himchan Song's allowance rate?

86.5% of resolved applications examined by Himchan Song were allowed (266 resolved cases), compared with 61.9% across Art Unit 3658 over the last five years.

Does an interview help with examiner Himchan Song?

This examiner's interview lift is +11.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Himchan Song take to allow a patent?

Applications allowed by Himchan Song took 863 days on average from filing to allowance.

Which art unit does examiner Himchan Song work in?

Himchan Song examines applications in Art Unit 3658 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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