Prosecution Insights
Last updated: October 26, 2026

Nelson J Nieves, USPTO Patent Examiner

Listed by the USPTO as NIEVES, NELSON J

Tech Center 3700 • Art Units: 2835 3744 3752 3763

This examiner grants 76% of resolved cases

Analysis

NIEVES, NELSON J is assigned to tech center 3700 and art unit 2835. The record covers 825 resolved cases and shows an allowance rate of 75.5%. The median time to allowance is 937 days. Interview lift is 16.5%, indicating a positive association between interviews and allowance outcomes.

The leading companies are Valeo S.A., Daikin Industries Ltd., and Canon Inc. The listed firms are OLIFF PLC, Spencer Fane LLP, and Bayramoglu Law Offices LLC. Practitioners can use these recurring applicants and counsel as a source of relevant prosecution context. The timing figure supports planning for examination duration, while the allowance and interview measures help frame response and interview decisions.

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

Performance Statistics

75.5%
Allow Rate
+5.5% vs TC avg
854
Total Applications
+16.5%
Interview Lift
937
Avg Prosecution Days
Based on 825 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
15.8%
§102 Novelty
47.7%
§103 Obviousness
34.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19179863 REFRIGERANT DISTRIBUTOR AND AIR CONDITIONER COMPRISING SAME Non-Final OA Samsung Electronics Co., Ltd.
18911736 DISPLAY DEVICE, CONTROL METHOD OF DISPLAY DEVICE AND NON-TRANSITORY COMPUTER READABLE MEDIUM Non-Final OA CANON KABUSHIKI KAISHA
19092376 Latent Heat Thermal Energy Storage Systems Non-Final OA Robert Bosch Gmbh
19075898 HEAT MANAGEMENT SYSTEM AND VEHICLE Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
19040143 VEHICLE AND HEAT MANAGEMENT SYSTEM Non-Final OA Panasonic Automotive Systems Co., Ltd.
19120227 HEAT EXCHANGER AND MANUFACTURING METHOD FOR A HEAT EXCHANGER Non-Final OA FUJITSU GENERAL LIMITED
19100964 TUBE FOR HEAT EXCHANGER Non-Final OA VALEO SYSTEMES THERMIQUES
18984269 PROTECTIVE GRID FOR A HEAT EXCHANGER Non-Final OA VALEO SYSTEMES THERMIQUES
18291444 SUBSTRATE SUPPORTS WITH MESOCHANNEL ASSEMBLIES Non-Final OA LAM RESEARCH CORPORATION
18996467 IMMERSION COOLING DEVICE Non-Final OA MITSUBISHI HEAVY INDUSTRIES, LTD.
19020814 HEAT EXCHANGER AND REFRIGERANT CYCLE APPARATUS Non-Final OA DAIKIN INDUSTRIES, LTD.
19063723 HEAT SINK Non-Final OA Furukawa Electric Co., Ltd.
19111950 A Plate Heat Exchanger Non-Final OA ALFA LAVAL CORPORATE AB
18780820 Heat Pump with Multiple Mini-Compressors Final Rejection Rheem Manufacturing Company
19080158 TWO-PHASE CLOSED THERMOSYPHON WITH INTERNAL ADIABATIC SECTION FOR EFFICIENT ULTRA-LONG-DISTANCE HEAT EXCHANGE Non-Final OA Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
18412529 OPEN AIR VEHICLE OCCUPANT COOLING MIST APPARATUS Final Rejection Individual inventor

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Who Appears Before This Examiner

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Frequently Asked Questions

What is examiner Nelson J Nieves's allowance rate?

75.5% of resolved applications examined by Nelson J Nieves were allowed (825 resolved cases), compared with 56.2% across Art Unit 2835 over the last five years.

Does an interview help with examiner Nelson J Nieves?

This examiner's interview lift is +16.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Nelson J Nieves take to allow a patent?

Applications allowed by Nelson J Nieves took 937 days on average from filing to allowance.

Which art unit does examiner Nelson J Nieves work in?

Nelson J Nieves examines applications in Art Unit 2835 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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