USPTO Art Unit 2838 Prosecution Statistics

Art Unit Information

Art Unit: 2838
Group: 2830
Tech Center: 2800
Total Cases: 33,233
Last Active: March 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19115737POWER-FAILURE HOLD CIRCUIT, POWER SUPPLY PROTECTION METHOD AND APPARATUS, AND POWER SUPPLY CONTROL CIRCUITMarch 2025May 2025Allow200NoNo
19110150METHOD FOR ACTUATING AN ELECTROMECHANICAL SWITCHING ELEMENTMarch 2025June 2025Allow300NoNo
19051761CIRCUIT AND METHOD OF DRIVING ANALOG LOADS USING DIGITAL SIGNALSFebruary 2025April 2025Allow200YesNo
19101053SYSTEMS AND METHODS TO PROTECT A MEMS RELAY SWITCH SYSTEMFebruary 2025June 2025Allow400NoNo
19037402RAPID TRACKING AND ADAPTIVE COMPENSATION METHOD FOR POWER FLUCTUATION OF PULSE LOAD OF SHIPJanuary 2025May 2025Allow400NoNo
19024817Hybrid direct current transmission system and control method thereofJanuary 2025April 2025Allow300NoNo
19011342RECTIFICATION CONTROL SYSTEM, CHARGER AND CONTROL METHOD FOR CHARGERJanuary 2025April 2025Allow310NoNo
18986636Planar Multilayer Transformer With Minimum Noise Injection In Between Primary And Secondary WindingDecember 2024February 2025Allow200NoNo
18979782CERAMIC SUSCEPTORDecember 2024May 2025Allow510NoNo
18979325METHOD AND APPARATUS FOR CONTROLLING REDUNDANCY OF VALVE CONTROL SYSTEM OF CONVERTER VALVEDecember 2024March 2025Allow300NoNo
18869872POWER CONVERTERNovember 2024January 2025Allow200NoNo
18945526ADAPTIVE ARC SUPPRESSION METHOD FOR GROUND FAULTS IN A COMBINED ACTIVE AND PASSIVE DISTRIBUTION NETWORKNovember 2024April 2025Allow500NoNo
18865016HIGH VOLTAGE BYPASS DEVICE, VOLTAGE SOURCE CONVERTER AND OPERATING METHODNovember 2024May 2025Allow610NoNo
18940539Switched-mode power supply startup circuitNovember 2024February 2025Allow310NoNo
18931851MULTI-CHANNEL ALTERNATING CURRENT CONVERSION CIRCUIT, POWER SUPPLY APPARATUS AND ELECTRONIC DEVICEOctober 2024December 2024Allow200NoNo
18920865Electric Distribution Line Ground Fault Prevention Device Using Dual Parameter High Sensitivity Monitoring Small Current Reduction with Small Increase in Negative Sequence CurrentOctober 2024January 2025Allow300NoNo
18913171ELECTRICAL RECEPTACLE FAULT PROTECTIONOctober 2024March 2025Allow510NoNo
18851287TRANSFORMER DC MAGNETIZATION DETECTION AND MITIGATION THROUGH VIBRATION MEASUREMENTSeptember 2024February 2025Allow500YesNo
18812694Circuits and Method for Controlling a Synchronous RectifierAugust 2024May 2025Allow921YesNo
18798347Integrating Trans-Inductor Voltage Regulator (TLVR) in Vertical Power DeliveryAugust 2024January 2025Allow510NoNo
18787231HIGH VOLTAGE MULTIPLIERSJuly 2024October 2024Allow300NoNo
18777388SYSTEM AND METHOD FOR AN OVERLAPPING INDEPENDENT PHASE ELECTRIC MOTOR/GENERATORJuly 2024October 2024Allow300NoNo
18771406Compact Modular Electrical Load Management SystemJuly 2024February 2025Allow700YesNo
18768245SYNCHRONOUS BOOTSTRAP HALF BRIDGE RECTIFIERJuly 2024February 2025Allow700NoNo
18766196High-Voltage Three-Phase Four-Bridge-Arm Topology Structure and InverterJuly 2024October 2024Allow400NoNo
18765706VOLTAGE REFERENCE CIRCUIT AND METHOD FOR PROVIDING REFERENCE VOLTAGEJuly 2024June 2025Allow1100NoNo
18765285Adaptive Power Supply Voltage Transient ProtectionJuly 2024March 2025Allow810YesNo
18763940LOW POWER HYBRID REVERSE BANDGAP REFERENCE AND DIGITAL TEMPERATURE SENSORJuly 2024April 2025Allow1000NoNo
18762703ELECTROSTATIC DISCHARGE CIRCUITS AND METHODS FOR OPERATING THE SAMEJuly 2024June 2025Allow1210NoNo
18761753Magnetic Flux Cancellation for Power Line CommunicationsJuly 2024April 2025Allow1010NoNo
18759289METHODS AND APPARATUS FOR A HIGH VOLTAGE CIRCUITJune 2024June 2025Allow1110NoNo
18758327DC-DC CONVERTER APPARATUS WITH TIME-BASED CONTROL LOOP AND CORRESPONDING CONTROL METHOD, AND COMPUTER PROGRAM PRODUCTJune 2024January 2025Allow700NoNo
18725059TEMPERATURE CONTROL METHOD FOR POWER SUPPLY CONVERSION CHIP, RELATED ASSEMBLY, AND MULTI-PHASE POWER SUPPLY APPARATUSJune 2024October 2024Allow400NoNo
18756699INTEGRATED CIRCUIT AND ELECTRONIC DEVICE INCLUDING THE SAMEJune 2024June 2025Allow1110NoNo
18754219MULTI-MODE CONTROL METHOD FOR GRID-CONNECTED INVERTERJune 2024September 2024Allow300YesNo
18754718Parallel Connected InvertersJune 2024May 2025Allow1010YesNo
18754858METHOD AND APPARATUS FOR DIGITAL, CLOSED-LOOP CONTROL OF CRCM SWITCH-MODE POWER CONVERTERSJune 2024June 2025Allow1210NoNo
18724055ETHERNET DEVICE, AND BIDIRECTIONAL CONVERTER AND CONTROL METHODJune 2024October 2024Allow400YesNo
18752356SEMICONDUCTOR DEVICEJune 2024January 2025Allow700NoNo
18752062SMART CARTRIDGE WAKE UP OPERATION AND DATA RETENTIONJune 2024April 2025Allow1010NoNo
18751267COMPACT POWER CONVERTER WITH TRANSISTORS THERMALLY AND ELECTRICALLY CONNECTED TO A FLUID COOLED BUS BARJune 2024January 2025Allow720YesNo
18749802ZERO CROSSING CONTACTOR AND METHOD OF OPERATINGJune 2024February 2025Allow700NoNo
18722673METHOD FOR OPERATING AN INVERTER ASSEMBLY AND INVERTER ASSEMBLY FOR CARRYING OUT THE METHODJune 2024January 2025Allow710NoNo
18748045EFFICIENT POWER ELECTRONICS ARRANGEMENTJune 2024February 2025Allow700YesNo
18746752VOLTAGE REGULATOR CIRCUIT FOR A SWITCHING CIRCUIT LOADJune 2024May 2025Allow1110NoNo
18745317METHODS AND APPARATUS TO COMPENSATE FOR POWER FACTOR LOSS USING A PHASOR CANCELLATION BASED COMPENSATION SCHEMEJune 2024January 2025Allow700NoNo
18743046SWITCHED-CAPACITOR CIRCUIT CONTROL IN POWER CONVERTERSJune 2024October 2024Allow410YesNo
18742088ACTIVE SWITCH ON TIME CONTROL FOR BIAS SUPPLYJune 2024February 2025Allow810NoNo
18743042PROTECTION OF SWITCHED CAPACITOR POWER CONVERTERJune 2024September 2024Allow310NoNo
18741576SYSTEMS AND METHODS FOR PROVIDING POWER TO PULSE-WIDTH-MODULATION CONTROLLERS OF POWER CONVERTERS DURING NORMAL OPERATIONJune 2024April 2025Allow1010NoNo
18741647SYSTEMS AND METHODS FOR CONTROLLING GATE VOLTAGE INCREASE ON PRIMARY SIDE TO REDUCE VOLTAGE SPIKE ON SECONDARY SIDE OF SWITCHING POWER SUPPLIESJune 2024January 2025Allow800NoNo
18739267ACTUATOR FOR GENERATING VIBRATIONJune 2024January 2025Allow800NoNo
18736856SWITCHING POWER CONVERTER AND ACTIVE EMI FILTER CIRCUIT THEREOFJune 2024January 2025Allow700YesNo
18737099IMPLEMENTING CONTACTOR OPENING AND FUSING STRATEGIES IN A POWER DISTRIBUTION UNITJune 2024February 2025Allow810NoNo
18736804ENERGY REDUCING KEY FOR ELECTRONIC TRIP UNITSJune 2024April 2025Allow1010NoNo
18735204Adaptive Load Optimization Method for Resonant Gate Drive CircuitJune 2024September 2024Allow300YesNo
18735379ELECTROSTATIC CHUCK ASSEMBLY FOR CRYOGENIC APPLICATIONSJune 2024March 2025Allow910YesNo
18736150Controllable Temperature Coefficient Bias CircuitJune 2024January 2025Allow800NoNo
18733812Phase-Shifted Full Bridge Topology With Energy Optimized Current InjectionJune 2024January 2025Abandon710NoNo
18678510SWITCHING REGULATOR WITH CONFIGURABLE SNUBBERMay 2024March 2025Allow1010NoNo
18678327Compact High-Power DC-to-DC Converters with Out-of-Phase Converter Units and Multiple Cooling TypesMay 2024December 2024Allow600NoNo
18678414INDUCTOR PROPERTY IDENTIFICATION FOR POWER CONVERTERSMay 2024December 2024Allow700NoNo
18677237ISOLATED DC/DC CONVERTER TOPOLOGY STRUCTURE FOR FUEL CELL SYSTEMMay 2024August 2024Allow300NoNo
18673927METHOD FOR HYBRID CONTROL OF GRID-CONNECTED INVERTER BASED ON TIME SHARING OF A VOLTAGE SOURCE AND A CURRENT SOURCEMay 2024November 2024Allow600NoNo
18673963CIRCUIT INTERRUPTING DEVICE HAVING PRINTED CIRCUIT BOARD COILSMay 2024April 2025Allow1110YesNo
18671453CLOCK GENERATION FOR MULTI-PHASE CONVERTERSMay 2024May 2025Allow1210NoNo
18669443APPARATUS FOR DETECTION OF ELECTRICAL DISTURBANCES RESULTING FROM ELECTROMAGNETIC PULSE AND SOLAR STORMMay 2024December 2024Allow700YesNo
18668595FIXED FREQUENCY RESONANT INVERTERMay 2024June 2025Allow1330NoNo
18668858REDUNDANT ROBOT POWER AND COMMUNICATION ARCHITECTUREMay 2024April 2025Allow1110YesNo
18667961SATELLITE SYSTEMMay 2024August 2024Allow300NoNo
18666783Inverter System with Reactive Power Support and Control Method ThereofMay 2024September 2024Allow410NoNo
18665996POWER SEQUENCE SYNCHRONIZATION BETWEEN MULTIPLE DEVICESMay 2024February 2025Allow910NoNo
18665134SUBSTRATE HOLDER AND METHODS OF USEMay 2024April 2025Allow1110NoNo
18664092FAST TURN-ON PROTECTION OF A CASCODE SWITCHMay 2024June 2025Allow1310YesNo
18663856SUPPRESSION OF SIGNAL TRANSMISSION OVER A CONDUCTORMay 2024December 2024Allow700YesNo
18709819CONTROL METHOD AND CIRCUIT FOR TWO-STAGE CURRENT LIMITING OF PEAK POWER CURRENTMay 2024January 2025Allow800NoNo
18662796ELECTROSTATIC CHUCKMay 2024June 2025Allow1420YesNo
18709347Systems and Methods for Adaptive Power Factor CorrectionMay 2024August 2024Allow300NoNo
18659472CAPACITOR-LESS LINEAR LOW DROP OUT VOLTAGE REGULATING SYSTEM AND METHOD WITH ENHANCED PSR, LINE-TRANSIENT AND LOAD-TRANSIENT RESPONSESMay 2024October 2024Allow600NoNo
18654429Electrostatic Chuck Assembly for Plasma Processing ApparatusMay 2024November 2024Allow700YesNo
18653852Three-Level Converter and Control Method ThereofMay 2024June 2024Allow200NoNo
18652104DC-DC Converter Based On Piezoelectric ResonatorMay 2024April 2025Allow1110NoNo
18651900SYSTEMS AND METHODS FOR RESISTANCE ADJUSTMENT RELATED TO SWITCH-MODE POWER CONVERTERSMay 2024January 2025Allow800YesNo
18650676SPARK GAP ASSEMBLY FOR OVERVOLTAGE PROTECTION AND SURGE ARRESTERApril 2024March 2025Allow1110NoNo
18649658CHARGING PROTECTION CIRCUIT, CHARGING CIRCUIT, AND ELECTRONIC DEVICEApril 2024June 2025Allow1320NoNo
18648642Conductor Temperature DetectorApril 2024February 2025Allow910NoNo
18649575BALANCING CURRENT CONSUMPTION BETWEEN DIFFERENT VOLTAGE SOURCESApril 2024June 2025Allow1410NoNo
18646937DEVICES FOR OVERVOLTAGE, OVERCURRENT AND ARC FLASH PROTECTIONApril 2024January 2025Allow910NoNo
18647600ROTOR AND METHOD FOR MANUFACTURING ROTORApril 2024February 2025Allow1000NoNo
18645752POWER SUPPLY DEVICE, POWER SUPPLY SYSTEM AND METHOD FOR CONTROLLING THE SAMEApril 2024November 2024Allow700YesNo
18645718NONLINEAR, DISCRETE TIME CONTROL OF POWER FACTOR CORRECTION POWER CONVERTERApril 2024November 2024Allow700YesNo
18643420VOLTAGE CONVERTERApril 2024May 2025Allow1310NoNo
18642039RESETTABLE ELECTRONIC FUSE FOR HIGH-POWER DEVICESApril 2024March 2025Allow1010NoNo
18641384MULTI-PHASE HIGH-PRECISION CURRENT SHARING CONTROL METHOD APPLIED TO CONSTANT ON-TIME CONTROLApril 2024June 2024Allow200NoNo
18638699CORE, STATOR, AND ROTATING ELECTRIC DEVICEApril 2024December 2024Allow800NoNo
18636776BASE STATION APPARATUS, TERMINAL APPARATUS, AND CONTROL METHODS FOR THE SAME FOR CELLULAR COMMUNICATION NETWORK IN WHICH RELAY COMMUNICATION IS PERFORMEDApril 2024March 2025Allow1110NoNo
18636430POWER EXPANDING APPARATUS FOR THREE-PHASE LLC CIRCUITApril 2024July 2024Allow300NoNo
18634182Power Converter With Overdrive Switch ControlApril 2024November 2024Allow700NoNo
18632469MANUFACTURING METHOD OF FLEXIBLE CHARGING PADApril 2024January 2025Allow1010NoNo
18632956POWER ELECTRONICS SYSTEM HAVING A DIFFERENTIAL HALL SENSOR, METHOD OF FABRICATING THE POWER ELECTRONICS SYSTEM, AND METHOD OF OPERATING A POWER SEMICONDUCTOR MODULE OF THE POWER ELECTRONICS SYSTEMApril 2024January 2025Allow1010NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2838.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
136
Examiner Affirmed
72
(52.9%)
Examiner Reversed
64
(47.1%)
Reversal Percentile
92.1%
Higher than average

What This Means

With a 47.1% 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
900
Allowed After Appeal Filing
342
(38.0%)
Not Allowed After Appeal Filing
558
(62.0%)
Filing Benefit Percentile
76.6%
Higher 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, 38.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the top 25% across the USPTO, indicating that filing appeals is particularly effective here. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

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 is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Art Unit 2838 - Prosecution Statistics Summary

Executive Summary

Art Unit 2838 is part of Group 2830 in Technology Center 2800. This art unit has examined 33,233 patent applications in our dataset, with an overall allowance rate of 87.9%. Applications typically reach final disposition in approximately 23 months.

Comparative Analysis

Art Unit 2838's allowance rate of 87.9% places it in the 86% percentile among all USPTO art units. This art unit has a significantly higher allowance rate than most art units at the USPTO.

Prosecution Patterns

Applications in Art Unit 2838 receive an average of 1.21 office actions before reaching final disposition (in the 9% percentile). The median prosecution time is 23 months (in the 85% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

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.