USPTO Art Unit 2846 Prosecution Statistics

Art Unit Information

Art Unit: 2846
Group: 2840
Tech Center: 2800
Total Cases: 8,366
Last Active: January 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19099703MODULAR BRAKING ADJUSTER WITH HYBRID DESIGNJanuary 2025June 2025Allow500NoNo
19025203FAULT DETECTION RESPONSE IN A ROBOT ARMJanuary 2025March 2025Allow200NoNo
19013080FLEXIBLE SENSOR AND METHOD OF DETECTING BIAXIAL WRIST JOINT MOTION, AND ROBOTIC ARMJanuary 2025March 2025Allow200NoNo
18991860INTELLIGENT CONTROL SYSTEM FOR CIRCULAR HIGH-POWER VIBRATION MOTORDecember 2024February 2025Allow200NoNo
18964779ADAPTIVE SPEED CONTROL FOR LINE-FOLLOWING ROBOTS AND METHOD THEREOFDecember 2024March 2025Allow300NoNo
18863671CONVEYANCE SYSTEMNovember 2024April 2025Allow510YesNo
18915421FLUX-WEAKENING CONTROL METHOD AND SYSTEM FOR SALIENT POLE OFFSET PERMANENT MAGNET SYNCHRONOUS MOTOROctober 2024November 2024Allow100NoNo
18916285VEHICLE AUXILIARY POWER SYSTEMOctober 2024January 2025Allow310NoNo
18888195LINEAR BALL GUIDED VOICE COIL MOTOR FOR FOLDED OPTICSeptember 2024January 2025Allow410NoNo
18844071ELECTRIC VALVE/DOOR, AND CONTROL APPARATUS AND METHOD THEREOFSeptember 2024February 2025Allow500NoNo
18819750METHOD FOR DESIGNING SPECIAL FUNCTION ROBOTSAugust 2024January 2025Allow510NoNo
18818066STEPLESS REGULATION FANAugust 2024March 2025Allow610NoNo
18842008METHOD FOR CONTROLLING AN INVERTER COMPRISING SELECTING A SAFETY MODEAugust 2024May 2025Allow910NoNo
18841908Method for Operating an Electric Drive System for a VehicleAugust 2024February 2025Allow500NoNo
18730268MOTOR CONTROL USING PIECEWISE AFFINE MODELJuly 2024March 2025Allow700NoNo
18768201ROTARY PERMANENT MAGNET ELECTRODYNAMIC SUSPENSION DEVICE AND PERMANENT MAGNET ELECTRODYNAMIC SUSPENSION METHOD USING THE SAMEJuly 2024October 2024Allow400NoNo
18763438System And Method For Driving An Ultrasonic Handpiece With A Linear AmplifierJuly 2024April 2025Allow900NoNo
18751697AUXILIARY ENERGY CIRCUIT FOR BATTERY-POWERED POWER TOOLJune 2024April 2025Allow900NoNo
18748934MOTOR CONTROL METHOD AND DEVICEJune 2024October 2024Allow410NoNo
18747942ELECTRIC TOOTHBRUSH, AND MOTOR CONTROL METHOD, DEVICE, SYSTEM, CONTROL BOARD, AND MEDIUM FOR THE SAMEJune 2024March 2025Allow910NoNo
18721458CURRENT DETECTION DEVICE, MOTOR CONTROL DEVICE, AND ELECTRIC POWER STEERING DEVICEJune 2024November 2024Allow400NoNo
18736693MOTOR-DRIVING APPARATUSJune 2024July 2025Allow1310NoNo
18716540MOTOR CONTROL DEVICE AND MOTOR CONTROL SYSTEMJune 2024November 2024Allow500NoNo
18733631POWER MODULE AND MOTOR DRIVE SYSTEM USING THE SAMEJune 2024April 2025Allow1010NoNo
18731781BATTERY-POWERED STAND-ALONE MOTOR UNITJune 2024December 2024Allow600YesNo
18679216ROBOTIC DEVICE AND METHODS FOR FABRICATION, USE AND CONTROL OF SAMEMay 2024May 2025Allow1200NoNo
18677110METHODS AND SYSTEM FOR POSITION STABILIZATIONMay 2024March 2025Allow1010NoNo
18671788VARIABLE POLE SYSTEM FOR ELECTRIC MOTORSMay 2024October 2024Allow510NoNo
18710867ELECTRIC MOTOR CONTROL METHOD AND ELECTRIC MOTOR CONTROL DEVICEMay 2024July 2024Allow200NoNo
18664029INVERTER CIRCUITS AND ELECTRICAL PROPULSION SYSTEMS FOR EVTOL AIRCRAFTMay 2024March 2025Allow1000NoNo
18663960INVERTER CIRCUITS AND ELECTRICAL PROPULSION SYSTEMS FOR EVTOL AIRCRAFTMay 2024July 2024Allow200NoNo
18651830VIBRATION PRESENTING DEVICEMay 2024March 2025Allow1010NoNo
18644996PULSED ELECTRIC MACHINE CONTROLApril 2024January 2025Allow900NoNo
18635827System and Method for Strain and Acceleration Based Analytics in an Independent Cart SystemApril 2024May 2025Allow1300NoNo
18626499LINEAR BALL GUIDED VOICE COIL MOTOR FOR FOLDED OPTICApril 2024June 2024Allow300YesNo
18625554PARAMETER MONITORING AND CONTROL FOR AN ELECTRIC DRIVEN HYDRAULIC FRACKING SYSTEMApril 2024April 2025Allow1300NoNo
18618016Bi-Stable, Sub-Commutated, Direct-Drive, Sinusoidal Motor Controller for Precision Position ControlMarch 2024February 2025Allow1110NoNo
18615089EASY HOLE START OPERATION FOR DRILLING POWER TOOLSMarch 2024March 2025Allow1210NoNo
18606204ELECTRIC MOTOR DRIVING APPARATUS, CONTROL METHOD, VEHICLE, AND READABLE STORAGE MEDIUMMarch 2024September 2024Allow600YesNo
18606620POWER DISTRIBUTION WITHIN AN ELECTRIC MACHINEMarch 2024October 2024Allow700NoNo
18604350TRACKING A POSITION OF A MOTORIZED WINDOW TREATMENTMarch 2024April 2025Allow1410YesNo
18602917TRASH CAN ASSEMBLYMarch 2024May 2024Allow300YesNo
18691122MOTOR BEARING WEAR STATE ESTIMATION DEVICE, BEARING WEAR STATE ESTIMATION METHOD, BEARING WEAR STATE ESTIMATION PROGRAM, AND CANNED MOTOR PUMPMarch 2024May 2024Allow200NoNo
18444944SYSTEMS AND METHODS FOR CONTROLLING MOVEMENTS OF ROBOTIC ACTUATORSFebruary 2024February 2025Allow1210NoNo
18438723POWER TOOL HAVING STAMPED BRAKE RESISTORFebruary 2024February 2025Allow1210NoNo
18430178Motor Angular Position ControlFebruary 2024August 2024Allow600YesNo
18419063ATHERECTOMY SYSTEM CURRENT SENSING, PROCESSING AND DISPLAYJanuary 2024April 2025Allow1420YesNo
18408933MOTOR-DRIVING APPARATUSJanuary 2024March 2025Allow1410NoNo
18576915MOTOR CONTROL METHOD AND MOTOR CONTROL DEVICEJanuary 2024June 2024Allow500NoNo
18576699SYSTEM AND METHOD FOR CONTROLLING A MOTORJanuary 2024August 2024Allow710NoNo
18404293HIGH-SPEED MOTOR SYSTEM WITH AIR BEARING SUPPORTING AND CONTROL METHOD THEREOFJanuary 2024April 2024Allow300NoNo
18401446SYSTEMS AND METHODS FOR ELECTRIC DAMPING OF AIRCRAFT FLIGHT CONTROL SURFACES AND PROPELLERSDecember 2023September 2024Allow810YesNo
18573102MOTOR APPARATUS AND METHOD FOR DRIVING MOTOR APPARATUSDecember 2023June 2024Allow600NoNo
18391936Fan Speed Control DeviceDecember 2023July 2024Allow700NoNo
18393139SMART MOTOR SYSTEMS AND METHODS USING LOCAL INTELLIGENCEDecember 2023June 2025Allow1810NoNo
18545090ELECTROADHESION DEVICE WITH VOLTAGE CONTROL MODULEDecember 2023November 2024Allow1100NoNo
18543777METHODS FOR IMPROVING RATE OF RISE OF TORQUE IN ELECTRIC MACHINES WITH STATOR CURRENT BIASINGDecember 2023March 2025Allow1520YesNo
18535778METHOD FOR IDENTIFYING A CARRIAGE OF A LINEAR TRANSPORT SYSTEMDecember 2023April 2024Allow410NoNo
18533880CONTROL CIRCUIT FOR FANDecember 2023June 2024Allow610NoNo
18531357SYSTEMS AND METHODS FOR, AND COMPONENTS OF, GEARBOXES FOR EVTOL AIRCRAFTDecember 2023February 2024Allow200NoNo
18527559SENSORLESS MOTOR CONTROL FOR A POWER TOOLDecember 2023February 2025Allow1510NoNo
18525650METHODS AND APPARATUS TO CONTROL ENGINE SPEED OF A POWER SYSTEMNovember 2023October 2024Allow1110YesNo
18514519CONTROL CIRCUIT OF A STEPPER MOTOR CAPABLE OF DETECTING AN EXTERNAL MAGNETIC FIELDNovember 2023June 2025Allow1900YesNo
18514583Stall Protection for a Motorized Window TreatmentNovember 2023July 2024Allow700NoNo
18509693Motor Control UnitNovember 2023June 2025Allow1910NoNo
18510028FAN DRIVE SYSTEM AND FANNovember 2023June 2024Allow710NoNo
18508333CROSS-COUPLING CONTROL METHOD FOR MOVING BEAM OF GANTRY MACHINE TOOLNovember 2023June 2025Allow1900NoNo
18388677SURGICAL SYSTEMS COMPRISING CONTROL CIRCUIT FOR CLOSED LOOP CONTROL OF MOTOR VELOCITY OF A SURGICAL STAPLING AND CUTTING INSTRUMENTNovember 2023September 2024Allow1000NoNo
18388810ELECTRONIC CONTROL DEVICE USING SHUNT RESISTOR AND CURRENT DETECTION CIRCUITNovember 2023June 2025Allow1900NoNo
18560061DYNAMICALLY CONFIGURABLE HARDWARE SYSTEM FOR MOTOR SYSTEM AND METHOD FOR OPERATING SAMENovember 2023May 2024Allow600NoNo
18290149SYSTEM FOR MANAGING ENERGY FOR AN AIRCRAFT WITH A HYBRID POWER SOURCE COMPRISING AT LEAST ONE RECHARGEABLE ELECTRICITY SOURCE AND ONE ELECTRICITY GENERATING SOURCENovember 2023May 2024Allow600NoNo
18505167SYSTEM AND METHOD FOR DETERMINING AND UTILIZING TIME CONSTANTS FOR A VARIABLE FREQUENCY DRIVENovember 2023June 2025Allow1900NoNo
18504272ELECTRIC MOTORNovember 2023June 2025Allow1900NoNo
18504262ELECTRIC MOTORNovember 2023June 2025Allow1900NoNo
18387530WIPER DEVICE FOR VEHICLE AND CONTROL METHOD THEREOFNovember 2023June 2025Allow1900NoNo
18387050MOTOR CONTROLLER AND BLDC MOTOR COMPRISING THE SAMENovember 2023June 2025Allow1900NoNo
18500252MOTOR CONTROL FOR GAS ENGINE REPLACEMENT DEVICE BASED ON BATTERY PACK CONFIGURATION DATANovember 2023December 2024Allow1410NoNo
18499731Motor Control Device, Motor Drive Device, Motor System, and Electrical ApparatusNovember 2023June 2025Allow1900NoNo
18289162MOTOR CONTROL DEVICE, INDUSTRIAL MACHINE SYSTEM, AND MOTOR CONTROL METHODNovember 2023June 2025Allow1900NoNo
18498132MOTOR CONTROL APPARATUS THAT PERFORMS FAILURE DETERMINATION AND DETERMINATION OF ROTATIONAL POSITION OF ROTOR, AND IMAGE FORMING APPARATUSOctober 2023October 2024Allow1110NoNo
18498141MOTOR CONTROL APPARATUS AND IMAGE FORMING APPARATUS WITH LIMITING COIL CURRENT FLOWING THROUGH MOTOR COILOctober 2023January 2025Allow1410NoNo
18498753PREDICTIVE CURRENT CONTROL METHOD FOR A SIX-PHASE INDUCTION MOTOROctober 2023June 2025Allow2000NoNo
18384829ARRANGEMENT AND METHOD FOR SUPPLYING ENERGY TO A CONTROL DEVICEOctober 2023May 2025Allow1900NoNo
18384002SYSTEM AND METHOD FOR SHIFTING OPERATION MODES OF VARIABLE FLUX MEMORY MOTORSOctober 2023July 2025Allow2000YesNo
18495594TRACTION INVERTER DC-LINK ACTIVE DISCHARGE METHODOctober 2023June 2025Allow2000NoNo
18384293Oscillating Fan Control System And Control Method ThereofOctober 2023May 2025Allow1800NoNo
18383831OSCILLATING-RESONANT-MODULE CONTROLLEROctober 2023September 2024Allow1110YesNo
18494239FILTERING OF MOTOR SIGNALS FOR CHATTER DETECTIONOctober 2023June 2025Allow1900NoNo
18556753MODE SWITCHING FOR A CENTRIFUGAL COMPRESSOROctober 2023February 2024Allow310NoNo
18492044MOTOR DRIVE SYSTEMOctober 2023June 2025Allow2000NoNo
18491383AIRCRAFT ENGINE START USING MULTIPLE COMMON MOTOR CONTROLLERSOctober 2023June 2025Allow1900NoNo
18491691CONTROL SYSTEMS AND METHODS WITH HAPTIC FEEDBACKOctober 2023May 2025Allow1900YesNo
18382039METHOD FOR CONTROLLING OPERATION OF PERMANENT-MAGNET SYNCHRONOUS MOTOR THROUGH SENSORLESS VECTOR CONTROLOctober 2023May 2025Allow1900YesNo
18489677Robotic Joint System with Length AdapterOctober 2023August 2024Abandon1010NoNo
18488442ON-PULSE TRANSITION TIMES FOR PULSED CONTROLLED ELECTRIC MACHINES USING BOOST VOLTAGESOctober 2023May 2025Allow1900NoNo
18555783ELECTRIC DRIVE UNIT FOR AN ELECTRIC HANDHELD POWER TOOL AND ELECTRIC HANDHELD POWER TOOL HAVING AN ELECTRIC DRIVE UNITOctober 2023June 2025Allow2000NoNo
18487641MOTOR CONTROL SYSTEM FOR ENERGIZING A LOW-VOLTAGE MOTOR FROM A HIGH-VOLTAGE SOURCEOctober 2023May 2025Allow1900NoNo
18379004SYSTEM AND METHOD FOR SPEED CONTROL AS A FUNCTION OF BATTERY CAPABILITY IN AN ELECTRIC AIRCRAFTOctober 2023December 2024Abandon1410NoNo
18484275IDENTIFICATION OF CURRENT GAIN ERRORS AND RESISTANCE IMBALANCE IN FEEDBACK CURRENT-CONTROLLED SYNCHRONOUS MOTOR DRIVE SYSTEMSOctober 2023May 2025Allow1900NoNo
18286236MOTOR CONTROL DEVICE, AND MOTOR CONTROL METHODOctober 2023May 2025Allow1900NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2846.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
73
Examiner Affirmed
32
(43.8%)
Examiner Reversed
41
(56.2%)
Reversal Percentile
95.2%
Higher than average

What This Means

With a 56.2% reversal rate, the PTAB has reversed the examiner's rejections more often than affirming them. 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
233
Allowed After Appeal Filing
90
(38.6%)
Not Allowed After Appeal Filing
143
(61.4%)
Filing Benefit Percentile
79.7%
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, 38.6% 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 2846 - Prosecution Statistics Summary

Executive Summary

Art Unit 2846 is part of Group 2840 in Technology Center 2800. This art unit has examined 8,366 patent applications in our dataset, with an overall allowance rate of 91.0%. Applications typically reach final disposition in approximately 22 months.

Comparative Analysis

Art Unit 2846's allowance rate of 91.0% places it in the 92% 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 2846 receive an average of 1.06 office actions before reaching final disposition (in the 6% percentile). The median prosecution time is 22 months (in the 89% 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.