Prosecution Insights
Last updated: October 26, 2026

Liang Dong, USPTO Patent Examiner

Listed by the USPTO as DONG, LIANG

Tech Center 3700 • Art Units: 3724 3725 3799

This examiner grants 53% of resolved cases

Analysis

DONG, LIANG works in tech center 3700 and art unit 3724. The record contains 506 resolved cases, a 53.2% allowance rate, and a median of 1084 days to allowance. The 32.7% interview lift is meaningful relative to the allowance rate, so interviews may deserve a defined place in prosecution planning.

The leading companies are MILWAUKEE ELECTRIC TOOL Corporation, Sacmi Cooperativa Meccanici Imola Societa' Cooperativa, and Dorco Co., Ltd. The leading firms are Bookoff McAndrews, PLLC, DORITY & MANNING, P.A. and MILWAUKEE ELECTRIC TOOL, and GREER, BURNS & CRAIN, LTD. Applicants should pair engagement with focused written responses.

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

Performance Statistics

53.2%
Allow Rate
-16.8% vs TC avg
587
Total Applications
+32.7%
Interview Lift
1084
Avg Prosecution Days
Based on 506 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
19.3%
§102 Novelty
51.8%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18788776 CUTTING DEVICE AND CUTTING SYSTEM Non-Final OA BROTHER KOGYO KABUSHIKI KAISHA
18810048 WORKING MACHINE AND VIBRATION DAMPING MEMBER Final Rejection MAKITA CORPORATION
18973388 POWERED SAW HAND DETECTION AND CONTROL Non-Final OA Milwaukee Electric Tool Corporation
18811263 Pilotless Knockout Tool Final Rejection Milwaukee Electric Tool Corporation
18808428 BAND SAW Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18645446 POLE SAW WITH IMPROVED CLAMPING Non-Final OA Milwaukee Electric Tool Corporation
18474346 CHAINSAW CUTTERS Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18469902 GARDEN TOOL AND PARALLEL POSITION SENSING SYSTEM Final Rejection Milwaukee Electric Tool Corporation
18944645 CHAINSAWS AND TENSIONING SYSTEMS FOR CHAINSAWS Final Rejection Techtronic Cordless GP
17817867 RECIPROCATING SAW BLADE Non-Final OA BLACK & DECKER INC.
18652837 VIBRATORY LINEAR ACTUATOR, FASTENING STRUCTURE FOR FASTENING VIBRATORY LINEAR ACTUATOR TO FASTENING PORTION COUNTERPART, AND CUTTER Final Rejection Panasonic Intellectual Property Management Co., Ltd.
18878136 ELECTRIC SHAVER WITH ROTATABLE EXTERNAL CUTTING MEMBER HAVING V-SHAPED HAIR-ENTRY OPENINGS Non-Final OA KONINKLIJKE PHILIPS N.V.
18791130 PUNCHING DEVICE AND PUNCHING METHOD USING SAME Final Rejection SAMSUNG SDI CO., LTD.
18889668 VIBRATORY CUTTING SYSTEM Final Rejection CORNING INCORPORATED
18308998 SENSOR-BASED SYSTEMS AND METHODS OF ANALYZING SHAVING PERFORMANCE Final Rejection The Gillette Company LLC
18557692 HANDHELD POWER TOOL Non-Final OA HUSQVARNA AB
18953671 MEASURING METHOD, MEASURING APPARATUS, AND WORKPIECE PROCESSING METHOD Non-Final OA DISCO CORPORATION
18816079 DIVIDING METHOD Final Rejection DISCO CORPORATION

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Frequently Asked Questions

What is examiner Liang Dong's allowance rate?

53.2% of resolved applications examined by Liang Dong were allowed (506 resolved cases), compared with 47.4% across Art Unit 3724 over the last five years.

Does an interview help with examiner Liang Dong?

This examiner's interview lift is +32.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Liang Dong take to allow a patent?

Applications allowed by Liang Dong took 1,084 days on average from filing to allowance.

Which art unit does examiner Liang Dong work in?

Liang Dong examines applications in Art Unit 3724 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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