Prosecution Insights
Last updated: October 27, 2026

Anh D Mai, USPTO Patent Examiner

Listed by the USPTO as MAI, ANH D

Tech Center 2800 • Art Units: 2800 2814 2829 2889 2893

This examiner grants 38% of resolved cases

Analysis

MAI, ANH D is assigned to Tech Center 2800 and art unit 2800. The profile contains 709 resolved cases, with an allowance rate of 37.7%. The median days to allowance is 1339, indicating that applicants should prepare for extended prosecution and preserve flexibility in amendment and continuation decisions.

The interview lift is 9.6%, so interviews show a positive association with allowance outcomes in the reported matters. The listed companies are Taiwan Semiconductor Manufacturing Company, Ltd., Samsung Display Co., Ltd., and Samsung Electronics Co., Ltd. The listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, CANTOR COLBURN LLP, and Harrity & Harrity, LLP. The portfolio concentration in semiconductor and display technology makes technical claim precision especially important.

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

Performance Statistics

37.7%
Allow Rate
-30.3% vs TC avg
769
Total Applications
+9.6%
Interview Lift
1339
Avg Prosecution Days
Based on 709 resolved cases, 2023–2026

Rejection Statute Breakdown

2.0%
§101 Eligibility
22.0%
§102 Novelty
44.6%
§103 Obviousness
30.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18239248 INTEGRATED CIRCUIT DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18329784 SEMICONDUCTOR DEVICE HAVING CONTACT PLUG WITH AN UPPER CONDUCTIVE PATTERN FORMED ON AN UPPER SURFACE OF A LOWER CONDUCTIVE PATTERN Final Rejection SAMSUNG ELECTRONICS CO., LTD.
18110488 POWER MANAGEMENT INTEGRATED CIRCUIT AND SEMICONDUCTOR PACKAGE INCLUDING THE SAME Final Rejection SAMSUNG ELECTRONICS CO., LTD.
18802243 A TRENCH-TYPE POWER SEMICONDUCTOR DEVICE HAVING P-TYPE REGIONS AND N-TYPE REGIONS ALTERNATIVELY FORMED UNDER AND CONTACTING THE BOTTOM OF TRENCH GATE Non-Final OA FUJI ELECTRIC CO., LTD.
18176130 SILICON CARBIDE SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SILICON CARBIDE SEMICONDUCTOR DEVICE Final Rejection FUJI ELECTRIC CO., LTD.
18238714 DISPLAY DEVICE Non-Final OA LG Display Co., Ltd.
18237044 DISPLAY APPARATUS Non-Final OA SAMSUNG DISPLAY CO., LTD.
18139884 FLEXIBLE WIRING BOARD HAVING SIGNAL LINE FORMED BETWEEN TWO INORGANIC LAYERS AND COVERED BY ORGANIC LAYERS OVER THE INORGANIC LAYERS Non-Final OA Samsung Display Co., Ltd.
17717493 DISPLAY DEVICE HAVING A CAPPING LAYER WITH A THICKNESS OF ABOUT 280 ANGSTROMS TO ABOUT 360 ANGSTROMS DISPOSED ON AN EMISSION ELEMENT AN ANTI-REFLECTION LAYER DISPOSED ON THE CAPPING LAYER AND A FILLING LAYER HAVING A REFRACTIVE INDEX OF ABOUT 1.3 TO ABOUT 1.6 DISPOSED ON THE ANTI-REFLECTION LAYER Final Rejection Samsung Display Co., Ltd.
17715700 DISPLAY APPARATUS INCLUDING AN OXIDE-SEMICONDUCTOR THIN FILM TRANSISTOR FORMED ON A SUBSTRATE HAVING A GATE ELECTRODE OF TWO DIFFERENT MATERIALS STACKED Non-Final OA Samsung Display Co., Ltd.
18577717 SOLID-STATE IMAGING ELEMENT, MANUFACTURING METHOD, AND ELECTRONIC EQUIPMENT Non-Final OA SONY SEMICONDUCTOR SOLUTIONS CORPORATION
18366441 LATERALLY DIFFUSED METAL OXIDE SEMICONDUCTOR (LDMOS) TRANSISTOR INTEGRATION IN INTEGRATED CIRCUIT (IC) PLATFORM Final Rejection QUALCOMM Incorporated
18446919 FIELD EFFECT TRANSISTOR HAVING A PLURALITY OF P-TYPE DEEP LAYERS AND PLURALITY OF N-TYPE DEEP LAYERS LATERALLY AND ALTERNATIVELY FORMED UNDER P-TYPE BODY LAYER EXTENDING IN A SECOND DIRECTION PERPENDICULAR TO THE DIRECTION OF THE TRENCH Non-Final OA DENSO CORPORATION
18583892 SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Non-Final OA Kioxia Corporation
17559296 A SEMICONDUCTOR DEVICE HAVING A DIFFUSION BREAK STRUCTURE WITH A FIRST WIDTH LESS THAN A WIDTH OF GATE TERMINAL Non-Final OA International Business Machines Corporation
18401948 SEMICONDUCTOR DEVICE STRUCTURE AND METHOD FOR FORMING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18447340 TRANSFER FIN FIELD EFFECT TRANSISTOR (finFET) OF A PIXEL SENSOR HAVING A PLURALITY OF CHANNEL FINS COUPLING THE N-TYPE REGION OF A PHOTODIODE TO AN EXTENSION REGION OF FLOATING DIFFUSION (FD) Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
17862422 SEMICONDUCTOR PACKAGE AND MANUFACTURING METHOD THEREOF Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
17303524 METHOD FOR FORMING DEEP TRENCH ISOLATION IN AN IMAGING SENSOR BY SEPARATELY FORMING FIRST SET OF DEEP TRENCHES IN FIRST DIRECTION THEN FORMING SECOND SET OF DEEP TRENCHES IN SECOND DIRECTION Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18781476 SEMICONDUCTOR DEVICE WITH INTEGRATED METAL-INSULATOR-METAL CAPACITORS Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.
16585859 SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
18226988 PRINTED CIRCUIT BOARD Non-Final OA SAMSUNG ELECTRO-MECHANICS CO., LTD.
18227969 POWER DEVICES WITH IMPROVED ON-RESISTANCE Final Rejection Purdue Research Foundation
18952927 TRENCHED SCHOTTKY STRUCTURE HAVING A DOPED REGION LOCATED AT A CENTRAL POSITION BETWEEN FIRST TRENCH AND SECOND TRENCH STRUCTURES Non-Final OA Diodes Incorporated

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Frequently Asked Questions

What is examiner Anh D Mai's allowance rate?

37.7% of resolved applications examined by Anh D Mai were allowed (709 resolved cases), compared with 69.7% across Art Unit 2800 over the last five years.

Does an interview help with examiner Anh D Mai?

This examiner's interview lift is +9.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Anh D Mai take to allow a patent?

Applications allowed by Anh D Mai took 1,339 days on average from filing to allowance.

Which art unit does examiner Anh D Mai work in?

Anh D Mai examines applications in Art Unit 2800 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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