Prosecution Insights
Last updated: October 26, 2026

Duc M Pham, USPTO Patent Examiner

Listed by the USPTO as PHAM, DUC M

Tech Center 2800 • Art Units: 2836 2849

This examiner grants 88% of resolved cases

Analysis

PHAM, DUC M handles cases in tech center 2800 and art unit 2836. The record includes 637 resolved cases, an 88.5% allowance rate, and a median of 860 days to allowance. The 12.6% interview lift indicates a meaningful positive association between interviews and allowance outcomes.

Samsung Electronics Co., Ltd., Toyota Motor Corporation, and Denso Corporation are the leading listed companies. The listed firms are OLIFF PLC, FINNEGAN, HENDERSON, FARABOW, GARRETT & DUNNER, and HSML P.C. The established case history and favorable allowance measure support disciplined claim strategy, while the interview result makes prepared examiner discussions worth considering.

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

Performance Statistics

88.5%
Allow Rate
+20.5% vs TC avg
673
Total Applications
+12.6%
Interview Lift
860
Avg Prosecution Days
Based on 637 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
31.8%
§102 Novelty
58.1%
§103 Obviousness
2.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18926895 POWER INVERTER, MOTOR CONTROL DEVICE INCLUDING THE SAME AND METHOD OF OPERATING THE SAME Final Rejection SAMSUNG ELECTRONICS CO., LTD.
19006760 ELECTRIC POWER SYSTEM Final Rejection TOYOTA JIDOSHA KABUSHIKI KAISHA
18985471 POWER RECEIVING APPARATUS, WIRELESS POWER TRANSFER SYSTEM, AND WIRELESS POWER TRANSFER METHOD Final Rejection DENSO CORPORATION
18737213 TRACTION NETWORK FOR A VEHICLE AND METHOD FOR OPERATING A TRACTION NETWORK Non-Final OA Volkswagen Aktiengesellschaft
18283951 POWER CONVERSION DEVICE HAVING MULTI-LEVEL STRUCTURE Final Rejection LG INNOTEK CO., LTD.
19270137 SEMICONDUCTOR DEVICE, SEMICONDUCTOR MODULE, RELAY UNIT, BATTERY UNIT, AND VEHICLE Non-Final OA ROHM CO., LTD.
18526184 SYSTEMS AND METHODS FOR LOAD HARMONIC SUPPRESSION Final Rejection SCHNEIDER ELECTRIC IT CORPORATION

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Frequently Asked Questions

What is examiner Duc M Pham's allowance rate?

88.5% of resolved applications examined by Duc M Pham were allowed (637 resolved cases), compared with 66.2% across Art Unit 2836 over the last five years.

Does an interview help with examiner Duc M Pham?

This examiner's interview lift is +12.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Duc M Pham take to allow a patent?

Applications allowed by Duc M Pham took 860 days on average from filing to allowance.

Which art unit does examiner Duc M Pham work in?

Duc M Pham examines applications in Art Unit 2836 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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