Prosecution Insights
Last updated: October 27, 2026

Justin Stefanon, USPTO Patent Examiner

Listed by the USPTO as STEFANON, JUSTIN

Tech Center 3700 • Art Units: 2834 3654 3723

This examiner grants 51% of resolved cases

Analysis

STEFANON, JUSTIN works in Tech Center 3700 and Art Unit 2834. The profile records 188 resolved cases, with an allowance rate of 51.1%. Interviews are associated with a 48.0% lift, while the median time to allowance is 1182 days. These measures describe a practice in which interview activity is materially relevant to prosecution outcomes, alongside a multi-year median path to allowance.

The listed company matters are Denso Corporation, Toyota Motor Corporation, and Schaeffler Technologies AG & Co. KG. The leading firms are SUGHRUE MION, PLLC, BIRCH STEWART KOLASCH & BIRCH, LLP, and OLIFF PLC. Applicants in this docket can use the interview measure when planning examiner engagement, while the allowance timing supports early attention to prosecution schedules.

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

Performance Statistics

51.1%
Allow Rate
-18.9% vs TC avg
253
Total Applications
+48.0%
Interview Lift
1182
Avg Prosecution Days
Based on 188 resolved cases, 2023–2026

Rejection Statute Breakdown

1.2%
§101 Eligibility
33.8%
§102 Novelty
37.9%
§103 Obviousness
26.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18872284 POWER CONTROL ACTUATOR Non-Final OA SONY GROUP CORPORATION
19007777 STATOR OF ROTATING ELECTRICAL MACHINE Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18482210 MOTOR Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18582868 Motor and Powertrain Final Rejection Huawei Digital Power Technologies Co., Ltd.
18547337 STATOR AND MOTOR EQUIPPED WITH SAME Final Rejection Panasonic Intellectual Property Management Co., Ltd.
18620154 ROTATING ELECTRIC MACHINE SYSTEM Final Rejection HONDA MOTOR CO., LTD.
19106448 STATOR AND KIT OF PARTS Non-Final OA Schaeffler Technologies AG & Co. KG
18554512 STATOR OF AN ELECTRIC AXIAL FLUX MACHINE, AND AXIAL FLUX MACHINE Non-Final OA Schaeffler Technologies AG & Co. KG
18214987 COOLING STRUCTURE AND METHOD OF FABRICATING A HOUSING INCLUDING SAME Non-Final OA KIA CORPORATION
18971174 DRIVE DEVICE Non-Final OA DENSO CORPORATION
18483374 ROTARY ELECTRIC MACHINE Final Rejection DENSO CORPORATION
18873340 MOTOR Non-Final OA Mitsubishi Electric Corporation
18875522 INVERTER AND ELECTRIC COMPRESSOR Non-Final OA MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
18581492 VIBRATION MOTOR Final Rejection Nidec Corporation
19111962 PERMANENT MAGNET-TYPE ROTARY ELECTRIC MACHINE Non-Final OA Mitsubishi Electric Mobility Corporation
19110469 ROTARY ELECTRIC MACHINE Non-Final OA MITSUBISHI ELECTRIC MOBILITY CORPORATION
18719193 MOTOR Final Rejection LG INNOTEK CO., LTD.
18415260 GAS BEARING FOR CENTRIFUGAL COMPRESSOR, CENTRIFUGAL COMPRESSOR AND REFRIGERATION SYSTEM Final Rejection Carrier Corporation
17894943 COOLING END TURNS IN HIGH POWER DENSITY ELECTRIC GENERATORS Final Rejection Honeywell International Inc.
18273124 Vehicle Drive Motor Non-Final OA Hitachi Astemo, Ltd.

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Frequently Asked Questions

What is examiner Justin Stefanon's allowance rate?

51.1% of resolved applications examined by Justin Stefanon were allowed (188 resolved cases), compared with 68.3% across Art Unit 2834 over the last five years.

Does an interview help with examiner Justin Stefanon?

This examiner's interview lift is +48.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Justin Stefanon take to allow a patent?

Applications allowed by Justin Stefanon took 1,182 days on average from filing to allowance.

Which art unit does examiner Justin Stefanon work in?

Justin Stefanon examines applications in Art Unit 2834 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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