Prosecution Insights
Last updated: October 27, 2026

Tung S Lau, USPTO Patent Examiner

Listed by the USPTO as LAU, TUNG S

Tech Center 3600 • Art Units: 1686 2812 2855 2857 2858 2862 2863 3645

This examiner grants 83% of resolved cases

Analysis

LAU, TUNG S is assigned to Tech Center 3600 and art unit 1686. The profile contains 1155 resolved cases and an allowance rate of 83.0%. The median time to allowance is 1044 days, while interviews correspond to a 14.5% lift in the allowance rate. The substantial record gives practitioners a useful basis for setting expectations about examination outcomes and timing.

The listed companies are LG Energy Solution Ltd., Denso Corporation, and Baker Hughes Holdings LLC. The listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, COATS & BENNETT, PLLC, and HARNESS DICKEY (DETROIT). These appearances provide reference points for counsel and technology owners with relevant experience. Applicants can consider interview preparation as part of their strategy, while treating the profile as aggregate guidance rather than a case-specific prediction.

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

Performance Statistics

83.0%
Allow Rate
+31.0% vs TC avg
1,199
Total Applications
+14.5%
Interview Lift
1044
Avg Prosecution Days
Based on 1155 resolved cases, 2023–2026

Rejection Statute Breakdown

24.5%
§101 Eligibility
26.8%
§102 Novelty
27.2%
§103 Obviousness
15.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18755393 METHOD AND APPARATUS WITH OBJECT DETECTION Non-Final OA Samsung Electronics Co., Ltd.
18672610 RANGING DEVICE AND RANGING METHOD Non-Final OA CANON KABUSHIKI KAISHA
18676205 BATTERY DIAGNOSING SYSTEM AND METHOD Non-Final OA LG ENERGY SOLUTION, LTD.
18688294 METHOD FOR ESTIMATING RESISTANCE OF BATTERY AND BATTERY SYSTEM FOR PROVIDING THE METHOD Non-Final OA LG ENERGY SOLUTION, LTD.
18289736 BATTERY DIAGNOSIS METHOD BASED ON DEGREE OF RESISTANCE DEGRADATION AND BATTERY SYSTEM APPLYING THE SAME Non-Final OA LG ENERGY SOLUTION, LTD.
18733252 Estimating Seismic Wavefront Attributes Non-Final OA Saudi Arabian Oil Company
18716418 CONDITION-ESTIMATING DEVICE, FAULT-DETERMINING DEVICE, AND CONDITION-ESTIMATING/FAULT-DETERMINING DEVICE Non-Final OA DENSO CORPORATION
18363511 BATTERY MANAGEMENT SYSTEM Non-Final OA DENSO CORPORATION
18612932 ACOUSTIC FLUID DENSITY DETERMINATION FOR GEOMETRICALLY COMPLEX FLOW CELLS Non-Final OA Baker Hughes Oilfield Operations, LLC
18417528 CEMENT EVALUATION AND CASING ECCENTRICITY DETECTION WITH CBL IN NON-CONCENTRIC CASING STRING WITH NARROW ANNULUS Non-Final OA Baker Hughes Oilfield Operations LLC
18662506 METHOD FOR INSPECTING A POWERPLANT COMPONENT USING AN INSPECTION SCOPE Non-Final OA RTX Corporation
18500041 TRAJECTORY EVALUATION METHOD AND APPARATUS Non-Final OA POSTECH Research and Business Development Foundation
18633654 SYSTEM AND METHOD FOR OPTIMIZING PERFORMANCE OF ONLINE SERVICES Non-Final OA Shopify Inc.
18659141 ANOMALY DETECTION DEVICE AND METHOD THEREOF Non-Final OA INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
18638851 METHODS AND DEVICES FOR PROVIDING REAL-TIME ASPHALT DENSITY AND MOISTURE CONTENT PREDICTION WITH GROUND PENETRATING RADAR Non-Final OA The Board of Trustees of the University of Illinois
18693954 SENSOR CALIBRATION METHOD AND ANALYTE DETECTION DEVICE Final Rejection MEDTRUM TECHNOLOGIES INC.
18715893 A SYSTEM FOR OPERATING A FOOD SERVING SYSTEM Non-Final OA TURUN YLIOPISTO
18137471 BATTERY PERFORMANCE TRACKING ACROSS BATTERY CELLS Non-Final OA REON Technology, Inc.
18399538 TECHNIQUES FOR DETERMINING LIGHTNING THREATS TO ENERGY INFRASTRUCTURE AND OPERATIONS Final Rejection Utopus Insights, Inc.
18263858 DEVICE AND METHOD FOR INSPECTING AN INDUSTRIAL VEHICLE Non-Final OA KIWITRON S.R.L.

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Frequently Asked Questions

What is examiner Tung S Lau's allowance rate?

83.0% of resolved applications examined by Tung S Lau were allowed (1,155 resolved cases), compared with 45.6% across Art Unit 1686 over the last five years.

Does an interview help with examiner Tung S Lau?

This examiner's interview lift is +14.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tung S Lau take to allow a patent?

Applications allowed by Tung S Lau took 1,044 days on average from filing to allowance.

Which art unit does examiner Tung S Lau work in?

Tung S Lau examines applications in Art Unit 1686 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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