Prosecution Insights
Last updated: October 27, 2026

Euncha P Cherry, USPTO Patent Examiner

Listed by the USPTO as CHERRY, EUNCHA P

Tech Center 4100 • Art Units: 2872 2892 3645 4100

This examiner grants 88% of resolved cases

Analysis

CHERRY, EUNCHA P works in tech center 4100 and art unit 2872, with 1076 resolved cases. The allowance rate is 88.1%, and the median time to allowance is 824 days. The interview lift is 9.3%, showing a positive but limited association compared with the already favorable allowance result.

The principal companies are Canon Inc., LG Electronics Inc., and Apple Inc. The leading firms are Barnes & Thornburg LLP (IN), Barron & Young PLLC, and BIRCH STEWART KOLASCH & BIRCH, LLP. The profile supports efficient prosecution planning with targeted rather than interview-dependent engagement.

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

Performance Statistics

88.1%
Allow Rate
+28.1% vs TC avg
1,104
Total Applications
+9.3%
Interview Lift
824
Avg Prosecution Days
Based on 1076 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
48.2%
§102 Novelty
41.7%
§103 Obviousness
3.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19104575 ELECTRONIC DEVICE Non-Final OA LG ELECTRONICS INC.
18942079 Light-Folded Projector Non-Final OA Apple Inc.
19061205 OPTICAL APPARATUS Non-Final OA CANON KABUSHIKI KAISHA
18945318 OPTICAL ELEMENT, METHOD FOR MANUFACTURING OPTICAL ELEMENT, AND OPTICAL EQUIPMENT Non-Final OA CANON KABUSHIKI KAISHA
18857847 RETROREFLECTIVE ARTICLE Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
19045238 OPTICAL DEVICE Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18948177 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS Non-Final OA KYOCERA Document Solutions Inc.
18820453 PNEUMATIC FOG PREVENTION FOR OPHTHALMIC LENS Non-Final OA Alcon Inc.
18721188 Optical window covered with a doped diamond electrode with active fouling removal functionality Non-Final OA THALES
18941007 OPTICAL MIRROR, SCANNING OPTICAL DEVICE, IMAGE FORMING DEVICE, AND MANUFACTURING METHOD FOR OPTICAL MIRROR Non-Final OA Konica Minolta, Inc.
18474542 IONIC LIQUID MIRROR Non-Final OA Honeywell International Inc.
18918862 LASER APPARATUS AND METHOD OF OPERATION THEREFOR Non-Final OA Lumenis Ltd.
18998112 ENTANGLEMENT GENERATORS WITH INCORPORATED MULTIPLEXING Non-Final OA Psiquantum, Corp.

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Frequently Asked Questions

What is examiner Euncha P Cherry's allowance rate?

88.1% of resolved applications examined by Euncha P Cherry were allowed (1,076 resolved cases), compared with 64.9% across Art Unit 2872 over the last five years.

Does an interview help with examiner Euncha P Cherry?

This examiner's interview lift is +9.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Euncha P Cherry take to allow a patent?

Applications allowed by Euncha P Cherry took 824 days on average from filing to allowance.

Which art unit does examiner Euncha P Cherry work in?

Euncha P Cherry examines applications in Art Unit 2872 in Tech Center 4100.

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