Prosecution Insights
Last updated: October 27, 2026

Thien S Tran, USPTO Patent Examiner

Listed by the USPTO as TRAN, THIEN S

Tech Center 3700 • Art Units: 1792 3725 3742 3761 3762

This examiner grants 72% of resolved cases

Analysis

TRAN, THIEN S works in Tech Center 3700 and Art Unit 1792. The record shows 1389 resolved cases, a 71.9% allowance rate, and a 24.0% interview lift. The median time to allowance is 1212 days. The large docket provides a substantial prosecution record, with an allowance outcome above half of resolved cases and a meaningful interview-associated effect that supports deliberate examiner engagement.

The leading companies are Altria Client Services LLC, DISCO Corporation, and WHIRLPOOL Corporation. The principal firms are BIRCH STEWART KOLASCH & BIRCH, LLP, GREER, BURNS & CRAIN, LTD, and Harness, Dickey & Pierce-Altria. Practitioners may benefit from focused interviews supported by amendments that clearly identify the technical distinction being relied upon.

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

Performance Statistics

71.9%
Allow Rate
+1.9% vs TC avg
1,440
Total Applications
+24.0%
Interview Lift
1212
Avg Prosecution Days
Based on 1389 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
17.1%
§102 Novelty
53.9%
§103 Obviousness
23.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18777813 COOKING APPLIANCE Final Rejection LG ELECTRONICS INC.
18650812 FLAT BATTERY PACK AND HEATED GARMENT COMMUNICATION Non-Final OA MILWAUKEE ELECTRIC TOOL CORPORATION
18614855 HEATING APPARATUS Non-Final OA SEIKO EPSON CORPORATION
18396833 LASER WELDING METHOD, LASER WELDING DEVICE, AND COMPUTER PROGRAM PRODUCT Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18579326 RF ENERGY RADIATION DEVICE Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18693078 WELDING DEVICE, WELDING METHOD, BATTERY MANUFACTURING DEVICE AND VEHICLE MANUFACTURING DEVICE Non-Final OA LG ENERGY SOLUTION, LTD.
18342337 Power System Radiators and Power Systems Having Radiators Non-Final OA Illinois Tool Works Inc.
18563834 HAIR STYLING APPLIANCE Non-Final OA Dyson Technology Limited
18604794 WELDING DEVICE, LIGHT-EMITTING ELEMENT WELDING METHOD, AND DISPLAY DEVICE Non-Final OA Tianma Advanced Display Technology Institute (Xiamen) Co., Ltd.
18358451 TRIMMING ATTACHMENT TOOL AND METHODS Final Rejection SAUDI ARABIAN OIL COMPANY
18292472 ADDITIVE MANUFACTURED OBJECT PRODUCTION METHOD, AND ADDITIVE MANUFACTURED OBJECT PRODUCTION SYSTEM Non-Final OA MITSUBISHI HEAVY INDUSTRIES, LTD.
18336643 Parent Substrate, Wafer Composite and Methods of Manufacturing Crystalline Substrates and Semiconductor Devices Non-Final OA Infineon Technologies AG
18731897 ASSEMBLY WITH CAPILLARY MEDIUM DEFINING DUCT THAT ABUTS SURFACE OF AIR IMPINGEMENT STRUCTURE Final Rejection Altria Client Services LLC
18669148 METHOD OF MAKING AEROSOL-GENERATING ARTICLE WITH POROUS BODY AND AEROSOL-FORMING SUBSTRATE Final Rejection Altria Client Services LLC
18437874 INDUCTION COIL ASSEMBLY Non-Final OA WHIRLPOOL CORPORATION
18390598 100 HZ NOISE REDUCTION IN A COOKTOP Non-Final OA WHIRLPOOL CORPORATION
18397636 LASER COLORED PRODUCT, LASER COLORING METHOD THEREFOR, AND LASER COLORING SYSTEM USING THE SAME Non-Final OA NATIONAL TSING HUA UNIVERSITY
18524684 LIGHT IRRADIATION TYPE HEAT TREATMENT METHOD AND HEAT TREATMENT APPARATUS Non-Final OA SCREEN Holdings Co., Ltd.
18636352 CERAMIC HEATER Non-Final OA NGK INSULATORS, LTD.
18609222 WAFER THINNING METHOD Non-Final OA DISCO CORPORATION
18499723 LASER PROCESSING APPARATUS AND PROCESSING METHOD Non-Final OA DISCO CORPORATION
18030387 CONTROLLED LOCAL HEATING OF SUBSTRATES Non-Final OA Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
18473320 AEROSOL GENERATING DEVICE, CONTROL METHOD AND STORAGE MEDIUM Non-Final OA Japan Tobacco Inc.
18152482 EDM ELECTRODE WITH ENRICHED SURFACE REGION Non-Final OA RAYTHEON TECHNOLOGIES CORPORATION

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Frequently Asked Questions

What is examiner Thien S Tran's allowance rate?

71.9% of resolved applications examined by Thien S Tran were allowed (1,389 resolved cases), compared with 22.9% across Art Unit 1792 over the last five years.

Does an interview help with examiner Thien S Tran?

This examiner's interview lift is +24.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Thien S Tran take to allow a patent?

Applications allowed by Thien S Tran took 1,212 days on average from filing to allowance.

Which art unit does examiner Thien S Tran work in?

Thien S Tran examines applications in Art Unit 1792 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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