Prosecution Insights
Last updated: October 26, 2026

Larry Li, USPTO Patent Examiner

Listed by the USPTO as LI, LARRY

Tech Center 3700 • Art Units: 2881 2884 3700

This examiner grants 67% of resolved cases

Analysis

LI, LARRY works in Tech Center 3700 and Art Unit 2881. His profile includes 6 resolved cases, a 66.7% allowance rate, and a median of 991 days to allowance. Interviews show a 66.7% lift. The small resolved-case record limits broad inference, but the figures support considering interviews when a matter presents a clear opportunity for direct clarification.

The listed companies are Hitachi Ltd., ASML Holding N.V., and SHIMADZU Corporation. The leading firms are MATTINGLY & MALUR, PC, THE WEBB LAW FIRM, P.C., and BALLARD SPAHR LLP. Practitioners should assess each application individually and avoid treating the outcome pattern as a settled expectation.

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

Performance Statistics

66.7%
Allow Rate
-3.3% vs TC avg
50
Total Applications
+66.7%
Interview Lift
991
Avg Prosecution Days
Based on 6 resolved cases, 2023–2026

Rejection Statute Breakdown

3.7%
§101 Eligibility
12.5%
§102 Novelty
55.2%
§103 Obviousness
28.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18668768 METAL OXIDE FILM, SEMICONDUCTOR DEVICE, AND METHOD FOR EVALUATING METAL OXIDE FILM Final Rejection SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
18567158 DETECTION PROBE, PROBE MICROSCOPE, AND SAMPLE TEMPERATURE MEASURING METHOD Final Rejection Hitachi, Ltd.
18668327 PHOTOELECTRON EMISSION MICROSCOPE Final Rejection Hitachi High-Tech Corporation
18699609 MULTIPOLE LENS AND CHARGED PARTICLE BEAM DEVICE Non-Final OA Hitachi High-Tech Corporation
18283932 Scanning Probe Microscope, Sample Observation Processing System, and Electric Characteristic Evaluation Device Non-Final OA Hitachi High-Tech Corporation
18509343 METHOD FOR DETECTING DEFECTS IN SEMICONDUCTOR STRUCTURE AND METHOD FOR CLASSIFYING SEMICONDUCTOR STRUCTURE Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
18565713 A THERMAL TRACE ENHANCER SYSTEM Final Rejection TUSAS- TURK HAVACILIK VE UZAY SANAYII ANONIM SIRKETI
18907722 Disinfection System For Wheelchairs Non-Final OA United States Government As Represented By The Department Of Veterans Affairs
18855625 CHARGED-PARTICLE BEAM APPARATUS WITH LARGE FIELD-OF-VIEW AND METHODS THEREOF Non-Final OA ASML Netherlands B.V.
18853983 E-BEAM OPTIMIZATION FOR OVERLAY MEASUREMENT OF BURIED FEATURES Non-Final OA ASML Netherlands B.V.
18759499 BEAM MANIPULATOR IN CHARGED PARTICLE-BEAM APPARATUS Non-Final OA ASML NETHERLANDS B.V.
18517642 CHARGED PARTICLE DEVICE AND METHOD Non-Final OA ASML Netherlands B.V.
18838620 MASS SPECTROMETER Non-Final OA SHIMADZU CORPORATION
18485311 FLOW RATE SWITCHING MECHANISM AND MASS SPECTROMETER Non-Final OA SHIMADZU CORPORATION
18425049 INSPECTION APPARATUS AND OPERATION METHOD OF THE SAME Final Rejection BRIGHTEST TECHNOLOGY TAIWAN CO., LTD.

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Frequently Asked Questions

What is examiner Larry Li's allowance rate?

66.7% of resolved applications examined by Larry Li were allowed (6 resolved cases), compared with 69.6% across Art Unit 2881 over the last five years.

Does an interview help with examiner Larry Li?

This examiner's interview lift is +66.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Larry Li take to allow a patent?

Applications allowed by Larry Li took 991 days on average from filing to allowance.

Which art unit does examiner Larry Li work in?

Larry Li examines applications in Art Unit 2881 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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