USPTO Examiner DOUNIS LAERT - Art Unit 3746

Examiner Information

Name: DOUNIS, LAERT
Art Unit: 3746
Total Cases: 313
Last Active: September 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19321141Thermal Energy Storage System for Use with a Low Temperature Heat Source and a Thermal Power Cycle SystemSeptember 2025December 2025Allow300YesNo
19305842THERMOMECHANICALLY ACTUATED PV CLEANING SYSTEMAugust 2025February 2026Allow600YesNo
19189085THERMAL ENERGY STORAGE SYSTEM FOR SIMPLE AND COMBINED CYCLE POWER GENERATIONApril 2025July 2025Allow300YesNo
19054410Thermo-Magnetic MotorFebruary 2025November 2025Allow910YesNo
19032539SUPPORT STRUCTURE OF ELECTRIC COMPRESSORJanuary 2025March 2026Allow1400NoNo
18873978SEALING GASKET WITH ONE OR MORE POSITIONING PROTRUSIONSDecember 2024March 2026Allow1510NoNo
18970300ANTIROTATION REED VALVE SYSTEMS AND METHODS FOR COMPRESSORSDecember 2024February 2026Allow1510YesNo
18969396Rotary inflating and deflating pumpDecember 2024February 2026Allow1510YesNo
18947667SYSTEM FOR COMPRESSING STEAM FROM A NUCLEAR STEAM SUPPLY SYSTEM TO OPERATE A TURBOGENERATORNovember 2024February 2026Allow1510NoNo
18923628PROCESSOR-BASED ORGANIC RANKINE CYCLE SYSTEM FOR PREDICTIVELY-MODELED RECOVERY AND CONVERSION OF THERMAL ENERGYOctober 2024March 2026Allow1610YesNo
18854660SCROLL COMPRESSOR INCLUDING BACK PRESSURE COMMUNICATION UNITOctober 2024February 2026Allow1610YesNo
18850806SCROLL COMPRESSOR WITH SHAFT BALANCER AND BUSHING BALANCERSeptember 2024November 2025Allow1400YesNo
18890017OIL SEPARATOR FOR COMPRESSOR AND COMPRESSOR WITH OIL SEPARATORSeptember 2024March 2026Allow1810YesNo
18889699REAL-TIME CONTROL OF REDUCTANT DROPLET SPRAY MOMENTUM AND IN-EXHAUST SPRAY DISTRIBUTIONSeptember 2024July 2025Allow1000YesNo
18846179MOBILE OIL STREAM ENERGY RECOVERY SYSTEMSeptember 2024October 2025Allow1400YesNo
18845627ELECTRIC COMPRESSOR HAVING AN INTERNAL FLOW PATH ARRANGED ON AN OPPOSITE SIDE OF A SUCTION PORT RELATIVE TO A FIRST PLANESeptember 2024February 2026Allow1710NoNo
18828379ROTOR TILT COMPENSATION IN PDM STATORSSeptember 2024August 2025Allow1100YesNo
18813156PV CLEANING SYSTEM WITH RACK AND PINION WIPERAugust 2024July 2025Allow1100NoNo
18761706CLIP-ON COMBINATION FANJuly 2024July 2025Allow1300NoNo
18722493REFRIGERANT COMPRESSOR WITH A MOTOR ROTOR AND STATOR SEPARATED BY A SEPARATING CANJune 2024October 2025Allow1610NoNo
18744460OPERATION METHOD OF A HEAT ENGINE DEVICE USING A SINGLE IONJune 2024November 2025Allow1710NoNo
18739506PHOTOVOLTAIC INSTALLATION INCLUDING TRIANGULAR TUBE HEAT COLLECTOR AND PISTONJune 2024August 2024Allow200YesNo
18671018SYSTEMS FOR GENERATING GEOTHERMAL POWER IN AN ORGANIC RANKINE CYCLE OPERATION DURING HYDROCARBON PRODUCTION BASED ON WORKING FLUID TEMPERATUREMay 2024June 2025Allow1300YesNo
18711048SYSTEMS, DEVICES, AND METHODS RELATING TO A COOLED RADIOFREQUENCY TREATMENT PROCEDUREMay 2024November 2025Allow1810YesNo
18662203PUMPED HEAT ENERGY STORAGE SYSTEM WITH STEAM CYCLEMay 2024January 2026Abandon2010NoNo
18659889PUMP HAVING HOLLOW ROTOR DISPOSED IN STATORMay 2024October 2025Allow1710YesNo
18654963SUBMERSIBLE PUMPING SYSTEMS WITH INTAKE MODULES HAVING TANGENTIAL FLUID INTAKE PORTSMay 2024November 2025Allow1810YesNo
18653319Thermal Energy Storage System Including a Plurality of Vessels Each Having Hot and Cold Liquid Portions Separated by a Floating PistonMay 2024May 2025Allow1300YesNo
18644113MOTOR DEVICE AND OIL PUMP DEVICEApril 2024May 2025Allow1300NoNo
18703555ROTOR STATOR PUMPApril 2024August 2025Allow1510YesNo
18634573INTERNAL COMBUSTION ENGINE POWERED SYSTEM, CHARGE AIR COOLER ASSEMBLY, AND METHOD OF COOLING CHARGE AIRApril 2024August 2025Allow1610YesNo
18700684AIR GAP MAGNETIC COUPLING WITH THERMAL ISOLATIONApril 2024July 2025Allow1501NoNo
18699771SCROLL COMPRESSORApril 2024November 2025Abandon1910NoNo
18624282EXHAUST GAS RECIRCULATION AND AFTERTREATMENT CONTROLApril 2024September 2025Allow1710YesNo
18605329MOTOR-DRIVEN COMPRESSOR WITH NOISE REDUCTION UNITMarch 2024June 2025Allow1500YesNo
18691955A Method and Apparatus for a Rotary Thermodynamic Cycle with Substantially Isobaric Fluid AdmissionMarch 2024March 2025Allow1210YesNo
18691302ASSEMBLY FOR COMPRESSING GAS HAVING A HOUSING COMPRISING COOLERS IN A CENTRAL SECTION, METHOD FOR COOLING, AND USE OF SUCH AN ASSEMBLYMarch 2024December 2025Allow2120NoNo
18599798CLEANING SYSTEM FOR PHOTOVOLTAIC INSTALLATIONSMarch 2024May 2024Allow200YesNo
18594018ELECTRIC DEVICE INCLUDING STATIC-REMOVING GROUNDING PATHMarch 2024June 2025Allow1500YesNo
18592721TWIN-TYPE SCROLL FLUID MACHINEMarch 2024November 2025Abandon2110NoNo
18588197MORPHING ORIGAMI STRUCTURESFebruary 2024February 2026Allow2400YesNo
18585994AIR COMPRESSOR CYLINDER HEAD AND AIR COMPRESSORFebruary 2024August 2025Allow1710YesNo
18685006MULTI-WELL GEOTHERMAL SYPHONING SYSTEMFebruary 2024February 2026Allow2420YesNo
18437497SCREW COMPRESSOR WITH A VARIABLE PITCH AND A LIQUID FEED MECHANISMFebruary 2024January 2026Abandon2420NoNo
18436547SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER AT A DRILLING RIGFebruary 2024September 2024Allow800NoNo
18432154CATALYTIC WALL FLOW FILTERFebruary 2024March 2025Allow1400YesNo
18432069INFLATION CONTROL SYSTEM HAVING MULTIPLE AIR COMPRESSORSFebruary 2024April 2025Allow1500YesNo
18423995AXIAL FAN HAVING CONTROL BOARD COVER WITH WINDOWS AT TOP SURFACE AND SIDE PERIPHERAL SURFACE OF CONTROL BOARD COVERJanuary 2024June 2025Allow1700NoNo
18422348MODULAR MOBILE HEAT GENERATION UNIT FOR GENERATION OF GEOTHERMAL POWER IN ORGANIC RANKINE CYCLE OPERATIONSJanuary 2024April 2025Allow1410NoNo
18421616CONSTANT SPEED ACCESSORY GEARBOX FOR TURBINE ENGINEJanuary 2024October 2025Allow2120NoNo
18420359ASYMMETRIC GAS BEARING BUSHING FOR THERMO-PUMPJanuary 2024July 2025Allow1820NoNo
18418796SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER AT A DRILLING RIGJanuary 2024August 2024Allow700YesNo
18290789HARVESTING OF THERMAL ENERGY BY NANOMACHINESJanuary 2024March 2025Allow1410NoNo
18412241INTEGRATED CARBON SEQUESTRATION AND POWER GENERATION SYSTEM AND METHODS OF USEJanuary 2024April 2025Allow1510YesNo
18406857REAL-TIME CONTROL OF REDUCTANT DROPLET SPRAY MOMENTUM AND IN-EXHAUST SPRAY DISTRIBUTIONJanuary 2024August 2024Allow700YesNo
18406873SYSTEM AND RELATED METHOD FOR CONVERTING FOSSIL-FUELED GENERATING PLANTS TO CLEAN ENERGYJanuary 2024August 2024Allow700NoNo
18576066Screw Pump with a Tapered Suction-Side Section and a Pressure-Side Section with a Decreasing ClearanceJanuary 2024April 2025Allow1510YesNo
18398886TURBINE WASTEGATE LINKAGE ASSEMBLYDecember 2023July 2024Allow700YesNo
18398878DIRECT CONNECT PISTON-DRIVEN BELLOWS PUMPDecember 2023July 2025Allow1910YesNo
18395886SWIRL STRUCTURE-BASED EXHAUST AFTERTREATMENT DEVICE FOR UNDERGROUND MINING DIESEL VEHICLEDecember 2023July 2024Allow700NoNo
18573658SPEED REGULATION SYSTEM OF A TURBINE AND RELEVANT CONTROL METHODDecember 2023July 2024Allow700YesNo
18392818DUAL-POWERTRAIN PUMPED HEAT ENERGY STORAGE WITH INVENTORY CONTROL AND PURGEDecember 2023August 2024Allow810YesNo
18391922TURBOCHARGER INCLUDING AN ACTUATOR HOUSING WITH A THROUGH HOLEDecember 2023January 2025Allow1320YesNo
18571561COAXIAL CIRCULATION POWER GENERATION DEVICE AND COAXIAL CIRCULATION POWER GENERATION METHODDecember 2023March 2025Allow1510NoNo
18519915GEOTHERMAL POWER SYSTEMS AND METHODS FOR SUBSEA SYSTEMSNovember 2023July 2024Allow810YesNo
18519722GEOTHERMAL POWER SYSTEMS AND METHODS FOR SUBSEA SYSTEMSNovember 2023June 2024Allow710YesNo
18561987STIRLING ENGINE WITH AT LEAST FOUR PISTON ASSEMBLIESNovember 2023June 2025Allow1920NoNo
18561295CONTROLLABLE MECHANICAL MOTOR VEHICLE COOLANT PUMPNovember 2023January 2025Allow1420NoNo
18560359PUMP WITH A DEFORMABLE DIAPHRAGMNovember 2023September 2024Allow1010YesNo
18500413COUPLED ORC HEAT PUMP ELECTRIC GENERATOR SYSTEMNovember 2023April 2024Allow510NoNo
18381884Scroll Compressor With Center HubOctober 2023August 2024Allow1010NoNo
18286998ELECTRIC-MOTOR-DRIVEN HYDRAULIC PUMP ACTUATOROctober 2023May 2024Allow700NoNo
18485712ANTIROTATION REED VALVE SYSTEMS AND METHODS FOR COMPRESSORSOctober 2023August 2024Allow1010YesNo
18482153HIGH MODULUS LINERS IN PDM STATORS WITH DIAMETER RELIEFS COMPENSATING FOR ROTOR TILTOctober 2023May 2024Allow700NoNo
18478563ROTARY POSITIVE DISPLACEMENT DEVICESeptember 2023April 2024Allow700NoNo
18476869SYSTEM FOR OPTIMIZING THERMAL ENERGY GENERATION FROM MULTIPLE ENERGY SOURCESSeptember 2023March 2025Allow1820NoNo
18469183PLANT AND PROCESS FOR ENERGY GENERATION AND STORAGESeptember 2023October 2024Allow1320YesNo
18550151LOW TEMPERATURE MAGNETOHYDRODYNAMICS POWER SYSTEMSeptember 2023August 2025Allow2320YesNo
18460902SCROLL COMPRESSOR INCLUDING A VALVE PLATE HAVING A SURFACE PRESSURE ENHANCEMENT PORTION PROTRUDING TOWARD AN INJECTION VALVESeptember 2023October 2024Allow1320NoNo
18447530HEAT SOURCE TEMPERATURE REGULATION AND WORKING MEDIUM DETECTION FOR CLOSED-CYCLE POWER CONVERSION EQUIPMENTAugust 2023November 2025Abandon2720NoNo
18230386PUMPED THERMAL STORAGE CYCLES WITH TURBOMACHINE SPEED CONTROLAugust 2023August 2024Allow1210NoNo
18273289FLUID HANDLING SYSTEMJuly 2023November 2024Abandon1610NoNo
18223811ACTUATOR COMPRISING ELECTRICALLY CONDUCTIVE POROUS MATERIALJuly 2023April 2025Allow2010NoNo
18354492WIND TURBINE SYSTEM WITH WIND DIRECTORS LOCATED ON EXTERIOR SIDE OF A BUILDINGJuly 2023November 2024Abandon1620NoNo
18340617INTEGRATED COOLING MODULEJune 2023September 2024Allow1410NoNo
18268237HARVESTING OF THERMAL ENERGY BY NANOMACHINESJune 2023September 2024Allow1500YesNo
18256572SCROLL COMPRESSORJune 2023April 2024Allow1000NoNo
18329329CO-ROTATING SCROLL COMPRESSOR HAVING SYNCHRONIZATION MECHANISMJune 2023March 2025Allow2120NoNo
18265014CONTROLLING VALVE ACTUATION OF AN INTERNAL COMBUSTION ENGINE TO PREVENT COMPRESSOR SURGEJune 2023July 2024Allow1410YesNo
18326742Method of automatic load regulation, operation and protection for steam turbine and motor combined drive and power generation in converter saturated steam utilizationMay 2023October 2023Allow510NoNo
18038329A CONTROL METHOD FOR AN AIR INTAKE INTERCOOLER THAT HEATS OR COOLS INTAKE AIR OF AN ENGINE AND A CONTROL SYSTEM THEREOFMay 2023April 2025Allow2210YesNo
18201123THERMAL SLUDGE TO ENERGY TRANSFORMERMay 2023October 2024Abandon1610NoNo
18197743OIL BOX DEVICE OF A ROOTS VACUUM PUMP WITH A CROSSED COOLING WATER TUBE SETMay 2023March 2024Allow1000NoNo
18196057MICRO-VOLUME DISPENSE PUMP SYSTEMS AND METHODSMay 2023March 2025Allow2220YesNo
18195822GEOTHERMAL SYSTEM WITH A PRESSURIZED CHAMBER IN A MAGMA WELLBOREMay 2023May 2025Allow2420NoYes
18195814PARTIALLY CASED WELLBORE IN MAGMA RESERVOIRMay 2023August 2025Allow2720YesNo
18189408SEAL SUPPORT ASSEMBLY FOR A TURBINE ENGINEMarch 2023June 2024Allow1410NoNo
18125208SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER AT A DRILLING RIGMarch 2023February 2024Allow1100YesNo
18187557INTEGRAL COMPOSITE STATOR LABYRINTH SEALMarch 2023March 2025Abandon2430YesNo
18181344ENERGY GENERATION SYSTEM FOR NON-TRADITIONAL COMBUSTIBLE FLUID SOURCEMarch 2023June 2024Allow1510NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner DOUNIS, LAERT.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
2
Examiner Affirmed
1
(50.0%)
Examiner Reversed
1
(50.0%)
Reversal Percentile
78.6%
Higher than average

What This Means

With a 50.0% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
12
Allowed After Appeal Filing
3
(25.0%)
Not Allowed After Appeal Filing
9
(75.0%)
Filing Benefit Percentile
36.3%
Lower than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 25.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is below the USPTO average, suggesting that filing an appeal has limited effectiveness in prompting favorable reconsideration.

Strategic Recommendations

✓ Appeals to PTAB show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

⚠ Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner DOUNIS, LAERT - Prosecution Strategy Guide

Executive Summary

Examiner DOUNIS, LAERT works in Art Unit 3746 and has examined 313 patent applications in our dataset. With an allowance rate of 78.0%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 23 months.

Allowance Patterns

Examiner DOUNIS, LAERT's allowance rate of 78.0% places them in the 45% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by DOUNIS, LAERT receive 1.71 office actions before reaching final disposition. This places the examiner in the 36% percentile for office actions issued. This examiner issues fewer office actions than average, which may indicate efficient prosecution or a more lenient examination style.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by DOUNIS, LAERT is 23 months. This places the examiner in the 87% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +15.7% benefit to allowance rate for applications examined by DOUNIS, LAERT. This interview benefit is in the 55% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 30.0% of applications are subsequently allowed. This success rate is in the 59% percentile among all examiners. Strategic Insight: RCEs show above-average effectiveness with this examiner. Consider whether your amendments or new arguments are strong enough to warrant an RCE versus filing a continuation.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 47.2% of cases where such amendments are filed. This entry rate is in the 71% percentile among all examiners. Strategic Recommendation: This examiner shows above-average receptiveness to after-final amendments. If your amendments clearly overcome the rejections and do not raise new issues, consider filing after-final amendments before resorting to an RCE.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 75.0% of appeals filed. This is in the 66% percentile among all examiners. Of these withdrawals, 33.3% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows above-average willingness to reconsider rejections during appeals. The mandatory appeal conference (MPEP § 1207.01) provides an opportunity for reconsideration.

Petition Practice

When applicants file petitions regarding this examiner's actions, 42.9% are granted (fully or in part). This grant rate is in the 35% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 44% percentile). This examiner makes examiner's amendments less often than average. You may need to make most claim amendments yourself.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.0% of allowed cases (in the 47% percentile). This examiner issues Quayle actions less often than average. Allowances may come directly without a separate action for formal matters.

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

    Relevant MPEP Sections for Prosecution Strategy

    • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
    • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
    • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
    • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
    • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
    • MPEP § 1214.07: Reopening prosecution after appeal

    Important Disclaimer

    Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

    No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

    Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

    Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.