Prosecution Insights
Last updated: October 27, 2026

Lillian T Nguyen, USPTO Patent Examiner

Listed by the USPTO as NGUYEN, LILLIAN T

Tech Center 3600 • Art Units: 3615 3655 3659

This examiner grants 84% of resolved cases

Analysis

NGUYEN, LILLIAN T is assigned to tech center 3600 and art unit 3615. The record includes 723 resolved cases and an 84.1% allowance rate. The 13.9% interview lift indicates a positive association between interviews and allowance outcomes. The median time to allowance is 762 days, so the profile supports planning around a defined examination period while preserving attention to substantive claim presentation.

The listed companies are Hitachi Ltd., Hyundai Mobis Co., Ltd., and ZF Friedrichshafen AG. The leading firms are BUCHANAN, INGERSOLL & ROONEY PC, FOLEY & LARDNER LLP, and MATTINGLY & MALUR, PC. Practitioners may use interviews as a supplemental strategy where discussion can resolve focused issues. The allowance record and resolved-case volume provide useful historical context for work in this art unit.

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

Performance Statistics

84.1%
Allow Rate
+32.1% vs TC avg
767
Total Applications
+13.9%
Interview Lift
762
Avg Prosecution Days
Based on 723 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
28.5%
§102 Novelty
35.8%
§103 Obviousness
30.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19154036 FREEWHEEL-AXIAL BEARING ASSEMBLY, AND TORQUE CONVERTER Non-Final OA Schaeffler Technologies AG & Co. KG
19225663 CLUTCH DEVICE WITH REVERSE INPUT BLOCKING FUNCTION Non-Final OA HYUNDAI MOBIS CO., LTD.
18904850 BRAKE DEVICE AND VEHICLE INCLUDING THE SAME Non-Final OA HYUNDAI MOBIS CO., LTD.
18324383 ELECTRICALLY OPERABLE DRIVE TRAIN AND VEHICLE Non-Final OA ZF Friedrichshafen AG
18694730 METHOD FOR OPERATING A BRAKE SYSTEM OF A UTILITY VEHICLE Final Rejection ZF CV Systems Europe BV
18422436 TRANSMISSION ASSEMBLY WITH A PLURALITY OF REDUCTION RATIOS, AND METHOD FOR OPERATING A TRANSMISSION ASSEMBLY Non-Final OA Continental Automotive Technologies GmbH
19117424 VEHICULAR DRIVE DEVICE Non-Final OA AISIN CORPORATION
19112081 CLUTCH ASSEMBLY Non-Final OA AUDI AG
18607572 BRAKE PISTON AND BRAKE SYSTEM INCLUDING THE SAME Final Rejection HL MANDO CORPORATION
18415228 FLOATING BRAKE CALIPER HAVING PLATE SHAPE SECTION FOR RESTING AGAINST BRAKE PAD AS WELL AS TOOL AND METHOD FOR MACHINING THE SAME Non-Final OA HL MANDO CORPORATION
18688876 ELECTRIC BRAKE APPARATUS AND DRIVE UNIT Non-Final OA Hitachi Astemo, Ltd.
18690077 DISK BRAKE Final Rejection Hitachi Astemo, Ltd.
18689886 SHOCK ABSORBER Final Rejection HITACHI ASTEMO, LTD.
18689888 CYLINDER DEVICE Non-Final OA HITACHI ASTEMO, LTD.
18893487 SHOCK-ABSORPTION STRUCTURE Non-Final OA TILTA INC.

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Frequently Asked Questions

What is examiner Lillian T Nguyen's allowance rate?

84.1% of resolved applications examined by Lillian T Nguyen were allowed (723 resolved cases), compared with 79.2% across Art Unit 3615 over the last five years.

Does an interview help with examiner Lillian T Nguyen?

This examiner's interview lift is +13.9 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Lillian T Nguyen take to allow a patent?

Applications allowed by Lillian T Nguyen took 762 days on average from filing to allowance.

Which art unit does examiner Lillian T Nguyen work in?

Lillian T Nguyen examines applications in Art Unit 3615 in Tech Center 3600 (Transportation, E-Commerce & Mechanical Systems).

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