Prosecution Insights
Last updated: October 26, 2026

Alexander N Lee, USPTO Patent Examiner

Listed by the USPTO as LEE, ALEXANDER N

Tech Center 2800 • Art Units: 1716 1737 2812 2891

This examiner grants 75% of resolved cases

Analysis

LEE, ALEXANDER N works in Tech Center 2800 and Art Unit 1716. The record includes 118 resolved cases, an allowance rate of 75.4%, and a median of 1232 days to allowance. Interviews are associated with an 11.0% lift in allowance outcomes. The profile indicates a moderate allowance history and a comparatively extended recorded path to allowance.

The listed companies are Taiwan Semiconductor Manufacturing Company, Ltd., Shin-Etsu Chemical Co., Ltd., and Samsung Electronics Co., Ltd. The listed firms are Studebaker Brackett PLLC, OLIFF PLC, and WHDA, LLP. Counsel can use interviews as a possible supplement to written responses, particularly when discussion may clarify the technical boundaries of the claims.

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

Performance Statistics

75.4%
Allow Rate
+7.4% vs TC avg
155
Total Applications
+11.0%
Interview Lift
1232
Avg Prosecution Days
Based on 118 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
22.7%
§102 Novelty
56.4%
§103 Obviousness
17.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18177742 CHEMICAL LIQUID SUPPLY METHOD AND PATTERN FORMING METHOD Non-Final OA FUJIFILM Corporation
17867327 COLORING RESIN COMPOSITION, FILM, COLOR FILTER, SOLID-STATE IMAGING ELEMENT, AND IMAGE DISPLAY DEVICE Final Rejection FUJIFILM Corporation
18613810 ORGANIC SALT, PHOTORESIST COMPOSITION INCLUDING THE SAME AND METHOD OF FORMING PATTERN BY USING THE PHOTORESIST PATTERN Non-Final OA Samsung Electronics Co., Ltd.
18413399 EXTREME ULTRAVIOLET MASK AND METHOD OF MANUFACTURING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18131279 GAS-PHASE METHOD OF FORMING RADIATION-SENSITIVE PATTERNABLE MATERIAL Non-Final OA ASM IP Holding, B.V.
17758567 POST APPLICATION/EXPOSURE TREATMENTS TO IMPROVE DRY DEVELOPMENT PERFORMANCE OF METAL-CONTAINING EUV RESIST Final Rejection Lam Research Corporation
18565488 COMPOSITION FOR REMOVING EDGE BEAD FROM METAL-CONTAINING RESISTS, AND METHOD OF FORMING PATTERNS INCLUDING STEP OF REMOVING EDGE BEAD USING SAME Final Rejection SAMSUNG SDI CO., LTD.
18511327 LAYER STACK FOR EXTREME ULTRAVIOLET LITHOGRAPHY Non-Final OA Tokyo Electron Limited
18193324 Dry Developing Metal-Free Photoresists Non-Final OA Tokyo Electron Limited
18542142 Reflective Mask Blank, Reflective Mask, and Manufacturing Method Thereof Non-Final OA Shin-Etsu Chemical Co., Ltd.
18207250 ONIUM SALT, RESIST COMPOSITION AND PATTERN FORMING PROCESS Final Rejection Shin-Etsu Chemical Co., Ltd.
18309793 Negative Photosensitive Resin Composition, Patterning Process, Interlayer Insulating Film, Surface Protection Film, And Electronic Component Non-Final OA SHIN-ETSU CHEMICAL CO., LTD.
18180936 RESIST MATERIAL AND PATTERN FORMING METHOD Non-Final OA SHIN-ETSU CHEMICAL CO., LTD.
18447568 PHOTORESIST MATERIALS AND ASSOCIATED METHODS Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18232264 PHOTORESIST COMPOSITION AND METHOD FOR MANUFACTURING A SEMICONDUCTOR DEVICE Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18231540 PHOTORESIST COMPOSITION AND METHOD OF FORMING PHOTORESIST PATTERN Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD
17302880 PHOTORESIST MATERIALS AND ASSOCIATED METHODS Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
17246496 PHOTORESIST COMPOSITION AND METHOD FOR MANUFACTURING A SEMICONDUCTOR DEVICE Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
17875322 NEGATIVE TONE PHOTORESIST FOR EUV LITHOGRAPHY Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
18690984 PHOTOSENSITIVE RESIN PRINTING PLATE PRECURSOR FOR RELIEF PRINTING, AND PRINTING PLATE Non-Final OA TOYOBO MC Corporation

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Frequently Asked Questions

What is examiner Alexander N Lee's allowance rate?

75.4% of resolved applications examined by Alexander N Lee were allowed (118 resolved cases), compared with 45.4% across Art Unit 1716 over the last five years.

Does an interview help with examiner Alexander N Lee?

This examiner's interview lift is +11.0 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Alexander N Lee take to allow a patent?

Applications allowed by Alexander N Lee took 1,232 days on average from filing to allowance.

Which art unit does examiner Alexander N Lee work in?

Alexander N Lee examines applications in Art Unit 1716 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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