Prosecution Insights
Last updated: October 04, 2026

Examiner: NGUYEN, SON T

Tech Center 3600 • Art Units: 3643

This examiner grants 29% of resolved cases

Analysis

Son T. Nguyen serves as an examiner in Tech Center 3600 and Art Unit 3643. He has managed 1173 resolved cases, establishing a clear record of outcomes for practitioners to analyze. The allowance rate for these cases is 28.8%, which reflects the proportion of applications that successfully result in a patent grant. This 28.8% rate suggests a challenging environment for applicants seeking protection in Art Unit 3643.

The median days to allowance is 1238. This 1238-day figure provides a timeline for the duration of the examination process for successful applications. A median of 1238 days indicates the expected path to a grant in Tech Center 3600. Applicants can use this 1238-day metric to plan their intellectual property strategy and manage expectations regarding the speed of resolution.

The data highlights an interview lift of 16.4%. This 16.4% lift represents the increase in the allowance rate when an interview is conducted. Given the base allowance rate of 28.8%, the 16.4% lift shows that direct communication is a useful tactic for resolving issues. Practitioners should consider the 16.4% lift as a strategy to improve the probability of a successful outcome within the 1238-day median timeframe.

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

Performance Statistics

28.9%
Allow Rate
-23.1% vs TC avg
1,225
Total Applications
+16.3%
Interview Lift
1238
Avg Prosecution Days
Based on 1174 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
19.1%
§102 Novelty
50.2%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18268574 CULTURE FLUID, ADDITIVE FOR CULTURE FLUID, AND CULTIVATION METHOD Final Rejection Kuraray Co., Ltd.
18621666 VEGETABLES, MUSHROOMS OR HERBS IN A BOX Final Rejection RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
19261285 ANIMAL HARNESS WITH SIDE-CONNECT LOOP SYSTEM AND METHOD Non-Final OA Canada Pooch Ltd.
19144798 Plant Lighting System Non-Final OA New AeroFarms, Inc.
19083280 LIGHTING FOR VERTICAL GROWING OF PLANTS Final Rejection Midrib Farms Holding, LLC
19083236 VERTICAL PLANT GROWING SYSTEMS AND TECHNIQUES Non-Final OA Midrib Farms Holding, LLC
19010451 ADJUSTABLE NAIL TRIMMER Final Rejection FOUR PAWS PRODUCTS, LTD.
18668756 TOOTHED PET GROOMING TOOL WITH FUR EJECTING MECHANISM Final Rejection Spectrum Brands, Inc.
18955502 SYSTEM AND METHOD FOR VERTICAL FARMING Final Rejection Oishii Farm Corporation
18846757 CULTIVATION TROUGH AND TRANSPORT SYSTEM Non-Final OA PB TECHNIEK B.V.
18502692 MOBILE TUB SYSTEM FOR HYDROPONIC METHOD FOR RAPIDLY GROWING A VEGETABLE CROP AND METHOD OF USING THE SAME Non-Final OA Element Farms, Inc.
18889198 MICROALGAE-BASED SOIL INOCULATING SYSTEM AND METHODS OF USE Final Rejection MYLAND COMPANY, INC
18818095 SOIL ENRICHMENT SYSTEMS AND METHODS Final Rejection MYLAND COMPANY, INC.
16345841 POULTRY CONTAINER COVER, POULTRY CONTAINER, AND POULTRY CONTAINER ASSEMBLY FOR HOLDING LIVE POULTRY Non-Final OA MAREL POULTRY B.V.
18581367 HIGH EFFICIENCY PLANTER SYSTEM AND METHOD Non-Final OA MEB Holdings LLC
18290571 HOOF PROTECTION MEANS FOR A HOOF OF AN EQUID, AND METHOD FOR PRODUCING AND ATTACHING SAME Non-Final OA Toni Quint
18235649 System for Releasing Beneficial Mites and Uses Thereof Final Rejection Koppert B.V.
18036745 DEVICE AND METHOD FOR DIRECTING PLANT DEVELOPMENT Non-Final OA PARXTRA HOLDING B.V.
18249877 SMART LITTER DEVICE WITH ENTRY BARRIER Final Rejection AUTOMATED PET CARE PRODUCTS LLC
17166629 PLANT GROWING TRAY SYSTEM Final Rejection METHOD INNOVATION PARTNERS INC.

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