Prosecution Insights
Last updated: April 19, 2026

Examiner: RUPPERT, ERIC S

Tech Center 3700 • Art Units: 1772 3744 3763

This examiner grants 59% of resolved cases

Performance Statistics

59.1%
Allow Rate
-10.9% vs TC avg
794
Total Applications
+24.1%
Interview Lift
1046
Avg Prosecution Days
Based on 739 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
21.1%
§102 Novelty
48.5%
§103 Obviousness
27.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18536493 METHOD AND DEVICE THAT PREVENT GAS HYDRATE FORMATION AND LIQUEFY GAS HYDRATES AFTER FORMATION Final Rejection Saudi Arabian Oil Company
18461878 THERMOSYPHON REBOILER MODIFICATION Non-Final OA Saudi Arabian Oil Company
18697129 HEAT EXCHANGER Non-Final OA Mitsubishi Electric Corporation
18611693 THERMAL ENERGY STORAGE DEVICE AND SYSTEM Final Rejection Mitsubishi Electric Corporation
18825582 HOUSING FOR MULTI-FLOWPATH HVAC SYSTEM Non-Final OA MAHLE INTERNATIONAL GMBH
18239949 GREEN ENERGY THERMAL STORAGE SYSTEM Non-Final OA HOLTEC INTERNATIONAL
18819809 THERMAL MANAGEMENT SYSTEM FOR A VEHICLE Non-Final OA KIA CORPORATION
17473896 COLD PLATE WITH PROTECTIVE MATERIAL TO PREVENT REACTION WITH LIQUID COOLANT Final Rejection Intel Corporation
18649208 HEAT EXCHANGER HAVING A MIXING CHAMBER WITH LOUVERS Final Rejection PRATT & WHITNEY CANADA CORP.
18606474 HEAT EXCHANGE SYSTEM FOR AIRCRAFT ENGINE Non-Final OA PRATT & WHITNEY CANADA CORP.
18386819 HEAT EXCHANGER WITH STIFFENING TUBE CONNECTORS Non-Final OA Hamilton Sundstrand Corporation
18519414 LIQUID COOLING DEVICE Non-Final OA DELTA ELECTRONICS, INC.
18836413 MONITORING DEVICE Non-Final OA MITSUBISHI HEAVY INDUSTRIES, LTD.
18709718 HEAT EXCHANGER AND AIR CONDITIONING SYSTEM HAVING SAME Final Rejection Danfoss A/S
18571543 CONTROLLABLE INJECTION FOR IMPLEMENTING DIFFERENT LOCAL REFRIGERANT DISTRIBUTION Final Rejection Linde GmbH
18847812 Hybrid 3D Printed Heat Sink Non-Final OA National University of Singapore
18358893 ENERGY STORAGE DEVICE Non-Final OA GRAPHITE ENERGY (ASSETS) PTY LIMITED
18272302 AN ENERGY STORAGE DEVICE Non-Final OA GRAPHITE ENERGY (ASSETS) PTY LIMITED
18815250 THERMAL MANAGEMENT SYSTEM FOR A VEHICLE Non-Final OA Vitesco Technologies GmbH
18814689 COOLING APPARATUS Non-Final OA COOLER MASTER CO., LTD.
18886503 DUAL MODE HEAT ENERGY COLLECTOR Non-Final OA Raytheon Systems Limited
18827178 REFRIGERATOR Non-Final OA HAIER SMART HOME CO., LTD.
18324057 AIR HANDLER Final Rejection Rheem Manufacturing Company
18822215 COOLING SYSTEM ASSEMBLY Non-Final OA Purple Cloud Development Pte. Ltd.
18765794 Heat Exchanger Apparatus Non-Final OA Dandelion Energy, Inc.
18735202 VECTOR CANCELLING COMPRESSOR DEVICE AND A METHOD THEREOF Non-Final OA ENTROPY ENGINES LIMITED
18714247 AIR-OIL HEAT EXCHANGER Final Rejection SAFRAN AERO BOOSTERS SA
18711538 HEAT EXCHANGE MODULE Non-Final OA CHASTNOE UCHREZHDENIE PO OBESPECHENIYU NAUCHNOGO RAZVITIYA ATOMNOJ OTRASLI "NAUKA I INNOVACII"
18561649 METHODS AND APPARATUSES FOR MAINTAINING SOLIDS AS A MELT Final Rejection ExxonMobil Chemical Patents Inc.
18438516 HEAT EXCHANGER ASSEMBLY OF THERMAL RETENTION APPARATUS FOR HEATING A LIQUID ON DEMAND Non-Final OA PHASESTOR LLC

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