Prosecution Insights
Last updated: October 26, 2026

Da Wei Lee, USPTO Patent Examiner

Listed by the USPTO as LEE, DA WEI

Tech Center 2800 • Art Units: 2817

This examiner grants 82% of resolved cases

Analysis

Examiner Lee, Da Wei is assigned to Tech Center 2800 and Art Unit 2817, with 50 resolved cases. The allowance rate is 82.0 percent, showing a high success rate for applications. The interview lift is 14.6 percent, suggesting that interviews are a helpful tool for reaching an allowance. The median days to allowance is 1308 days, which indicates a longer than average duration for the prosecution process.

Major companies like Samsung Electronics Co., Ltd., Sony Group Corporation, and BOE Technology Group Co., Ltd. are active in this examiner's docket. Firms such as OBLON, MCCLELLAND, MAIER & NEUSTADT, L.L.P. and BIRCH STEWART KOLASCH & BIRCH, LLP must manage the 1308 days to allowance when advising their clients. Calderon Safran & Wright P.C. also appears among the top firms for the 50 resolved cases.

The 82.0 percent allowance rate is a positive sign for applicants, but the 1308 days to allowance requires a long-term perspective. The 14.6 percent interview lift provides a clear path for practitioners to resolve outstanding issues. In Art Unit 2817, the combination of a high allowance rate and a moderate interview lift suggests that while the process is slow, the eventual outcome is likely to be favorable.

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

Performance Statistics

82.0%
Allow Rate
+14.0% vs TC avg
91
Total Applications
+14.6%
Interview Lift
1308
Avg Prosecution Days
Based on 50 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
34.2%
§102 Novelty
55.6%
§103 Obviousness
9.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17834240 THREE-DIMENSIONAL SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAME Non-Final OA Samsung Electronics Co., Ltd.
17830488 SEMICONDUCTOR PACKAGE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18550281 SEMICONDUCTOR DEVICE AND IMAGING DEVICE Final Rejection SONY SEMICONDUCTOR SOLUTIONS CORPORATION
18558302 DISPLAY SUBSTRATE AND DISPLAY APPARATUS Non-Final OA BOE TECHNOLOGY GROUP CO., LTD.
18827292 MANUFACTURING SEMICONDUCTOR DEVICE USING SELECTIVE DIELECTRIC ON DIELECTRIC (DOD) DEPOSITION PROCESS Non-Final OA MERCK PATENT GMBH
18646659 PACKAGE COMPRISING A PACKAGE SUBSTRATE THAT INCLUDES AN ENCAPSULATED PORTION WITH INTERCONNECTION PORTION BLOCKS Non-Final OA QUALCOMM Incorporated
18757034 STACKED DIE NETWORK INTERFACE CONTROLLER CIRCUITRY Non-Final OA Altera Corporation
18735435 SEMICONDUCTOR MANUFACTURING APPARATUS, METHOD OF MANUFACTURING SEMICONDUCTOR APPARATUS, AND SEMICONDUCTOR APPARATUS Non-Final OA Mitsubishi Electric Corporation
18672449 SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME Non-Final OA Kioxia Corporation
18620887 SEMICONDUCTOR DEVICES WITH ALTERNATING INSULATING LAYERS AND METHODS OF FABRICATION THEREOF Non-Final OA TEXAS INSTRUMENTS INCORPORATED
18815976 Device with High-Density Memory Cells and Method of Manufacturing the Same Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18631979 SEMICONDUCTOR STRUCTURE AND METHOD FOR MANUFACTURING THE SAME Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18050753 THIN-FILM TRANSISTOR HAVING VERTICAL STRUCTURE AND ELECTRONIC DEVICE Non-Final OA WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
18058956 NANOSTRUCTURE-BASED SUBSTRATE FOR SURFACE-ENHANCED RAMAN SPECTROSCOPY, AND MANUFACTURING METHOD THEREFOR Final Rejection UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION

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Frequently Asked Questions

What is examiner Da Wei Lee's allowance rate?

82.0% of resolved applications examined by Da Wei Lee were allowed (50 resolved cases), compared with 81.7% across Art Unit 2817 over the last five years.

Does an interview help with examiner Da Wei Lee?

This examiner's interview lift is +14.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Da Wei Lee take to allow a patent?

Applications allowed by Da Wei Lee took 1,308 days on average from filing to allowance.

Which art unit does examiner Da Wei Lee work in?

Da Wei Lee examines applications in Art Unit 2817 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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