USPTO Examiner AHMAD SHAHZEB K - Art Unit 2839

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
17119553PREDICTION OF LOAD CURRENT AND CONTROL CURRENT IN A POWER CONVERTER USING OUTPUT VOLTAGE THRESHOLDS BY PRE-SEEDING TARGET CURRENT VALUESDecember 2020June 2023Allow3020NoNo
17114793Switch Mode Regulator With Slew Rate ControlDecember 2020November 2022Allow2310NoNo
17115605POWER CONVERSION CIRCUIT AND POWER CONVERSION APPARATUS WITH SAMEDecember 2020February 2022Allow1400NoNo
15734603SWITCHING ELEMENT UNIT AND SWITCHING ELEMENT MODULE FOR USE IN AN INVERTER CIRCUITDecember 2020April 2022Allow1710NoNo
17092338CONSTANT CURRENT CIRCUIT AND SEMICONDUCTOR APPARATUSNovember 2020June 2022Allow1910NoNo
17087844SINGLE-STAGE DC-DC POWER CONVERTERNovember 2020October 2022Allow2420YesNo
17071041Switching Power Supply DeviceOctober 2020March 2022Allow1700NoNo
17047876A POWER CONVERTER FOR A BIOELECTROCHEMICAL SYSTEMOctober 2020January 2023Allow2700NoNo
17033010INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUITSeptember 2020October 2021Allow1300NoNo
17033494Voltage Regulator CircuitSeptember 2020December 2022Allow2710YesNo
17029991LOW DROPOUT REGULATOR WITH FEEDFORWARD POWER SUPPLY NOISE REJECTION CIRCUITSeptember 2020November 2022Allow2610YesNo
17027125CONVERSION APPARATUS WITH OVERLOAD CONTROL AND OVERLOAD CONTROL METHOD FOR THE SAMESeptember 2020October 2022Allow2510NoNo
17022114FORWARD CONVERTER WITH SECONDARY LCD CONNECTED IN PARALLEL TO REALIZE FORWARD AND BACKWARD ENERGY TRANSMISSIONSeptember 2020February 2022Allow1710NoNo
17022102FORWARD CONVERTER WITH SECONDARY LCD CONNECTED IN SERIES TO REALIZE EXCITATION ENERGY TRANSFERSeptember 2020February 2022Allow1700NoNo
17017127ELECTRONIC CIRCUIT AND ELECTRONIC APPARATUS TO OUTPUT RINGING VOLTAGESeptember 2020August 2022Allow2420NoNo
17009848SOFT START METHOD FOR A SINGLE INDUCTOR MULTIPLE OUTPUT POWER SUPPLYSeptember 2020December 2022Allow2710NoNo
16947995REDUCED VOLTAGE SWITCHING OF A MAIN SWITCH IN FLYBACK POWER CONVERTERSAugust 2020May 2022Abandon2110NoNo
16992662DIGITAL CONTROL FOR VOLTAGE CONVERTERAugust 2020February 2022Allow1810NoNo
16985570POWER DEVICE HEALTH MONITORING UTILISING A BRIDGE ARRANGEMENTAugust 2020January 2023Allow2910NoNo
16944270ACTIVE CLAMP CONTROLLER CIRCUITJuly 2020December 2021Allow1610NoNo
16947266PHASE-CONTROLLED POWER CONVERTERJuly 2020December 2021Allow1610NoNo
16964373LOGARITHMIC CURRENT-TO-VOLTAGE CONVERSION CIRCUIT HAVING TEMPERATURE COMPENSATION FUNCTIONJuly 2020August 2021Allow1200NoNo
16881240LOW DROPOUT REGULATOR WITH LESS QUIESCENT CURRENT IN DROPOUT REGIONMay 2020December 2022Allow3110NoNo
16871145Planar Transformer, Power Conversion Circuit, and AdapterMay 2020March 2021Allow1010NoNo
16869084FREQUENCY COMPENSATION CIRCUIT AND CORRESPONDING DEVICEMay 2020June 2021Allow1400NoNo
16867641Flyback Power Switch Structure for Bridgeless RectifierMay 2020October 2021Allow1710NoNo
16849034CURRENT SENSING SYSTEM COMPRISING A SCALED TRANSISTOR AND METHODS OF OPERATION THEREOFApril 2020April 2021Allow1210NoNo
16651220DEVICE FOR TRANSMITTING AND RECEIVING A WIRELESS RADIO SIGNAL, CORRESPONDING METHOD AND PROGRAMMarch 2020October 2022Allow3110NoNo
16830630ALTERNATING CURRENT-DIRECT CURRENT CONVERSION CIRCUIT, ALTERNATING CURRENT-DIRECT CURRENT CONVERSION METHOD AND CHARGERMarch 2020October 2021Allow1810NoNo
16825071VOLTAGE REFERENCES AND DESIGN THEREOFMarch 2020January 2024Abandon4621NoNo
16823505REDUCED VOLTAGE SWITCHING OF A MAIN SWITCH IN FLYBACK POWER CONVERTERSMarch 2020January 2021Allow1010NoNo
16818347NONLINEAR TRIM HEAD POWER SUPPLY WITH A WIDE INPUT RANGE AND A HIGH EFFICIENCYMarch 2020December 2022Allow3320YesNo
16818362DIGITAL REGULATOR SYSTEM AND CONTROL METHOD THEREOFMarch 2020May 2022Allow2610NoNo
16813838VOLTAGE REFERENCE CIRCUIT FOR COUNTERING A TEMPERATURE DEPENDENT VOLTAGE BIASMarch 2020November 2021Allow2010NoNo
16810108LOW DROPOUT REGULATOR (LDO) CIRCUIT WITH SMOOTH PASS TRANSISTOR PARTITIONINGMarch 2020May 2022Allow2610NoNo
16790920TERMINATION VOLTAGE REGULATION APPARATUS WITH TRANSIENT RESPONSE ENHANCEMENTFebruary 2020October 2021Allow2010NoNo
16781549PRECISION REFERENCE CIRCUITFebruary 2020August 2022Allow3020NoNo
16742703CONTROL CIRCUIT FOR AN INPUT FILTER CAPACITOR IN A SWITCH-MODE POWER SUPPLYJanuary 2020March 2021Allow1400NoNo
16737403INPUT OVERVOLTAGE PROTECTION CIRCUITS FOR POWER SUPPLIESJanuary 2020October 2021Allow2100NoNo
16725312HYBRID MULTILEVEL INVERTER TOPOLOGY WITH REDUCED SWITCH COUNT AND DC VOLTAGE SOURCESDecember 2019March 2021Allow1510YesNo
16703440IDLE RING DETECTION FOR A MULTI-OUTPUT POWER CONVERTERDecember 2019November 2020Allow1210YesNo
16613909SEMICONDUCTOR SWITCHING ARRANGEMENTNovember 2019April 2022Allow2910NoNo
16591183Power Module Including Multiple Signal Wiring Patterns Disposed On An Insulating SubstrateOctober 2019April 2020Allow600YesNo
16589814DC TRANSMISSION APPARATUS, SURGE CONTROL CIRCUIT AND METHODOctober 2019April 2021Allow1800NoNo
16582156POWER CONVERTER, POWER CONVERSION SYSTEMSeptember 2019April 2022Allow3030NoNo
16579420SYSTEM AND APPARATUS TO PROVIDE CURRENT COMPENSATIONSeptember 2019July 2022Allow3410NoNo
16579633PWM/PFM Drive Scheme for Mutually Coupled Inductive CoilsSeptember 2019July 2020Allow1010YesNo
16496618METHOD FOR SUPPRESSING COMMON-MODE CURRENT OF NEUTRAL LINE IN T-TYPE THREE-LEVEL THREE-PHASE INVERTERSeptember 2019March 2020Allow600YesNo
16571092VOLTAGE DOUBLING VARIABLE FREQUENCY DRIVESeptember 2019October 2021Abandon2530NoNo
16569924POWER CONVERTER WITH ACTIVE CLAMPSeptember 2019March 2020Allow700NoNo
16543314LOW POWER REFERENCE VOLTAGE GENERATING CIRCUITAugust 2019May 2022Allow3330YesNo
16534324BALANCING POWER DISTRIBUTIONAugust 2019July 2022Allow3510YesNo
16531495SELF-BIASED ACTIVE VOLTAGE DOUBLER FOR ENERGY HARVESTING SYSTEMSAugust 2019April 2021Abandon2010NoNo
16530394LLCC SECONDARY OVERTONE RESONANT POWER CONVERTERAugust 2019November 2020Allow1600NoNo
16528906Charge Pump Transient Response Optimization by Controlled Flying Capacitor Discharge During Bypass to Switching Mode TransitionAugust 2019February 2021Allow1910NoNo
16528487Resonant Charge Pump Circuit with Synchronized SwitchingJuly 2019August 2020Abandon1320NoNo
16528495Power Conversion Device with Selective Voltage ControlJuly 2019March 2021Allow1910NoNo
16520180Three-Phase Electronic Control Unit for Enclosure Air ConditionersJuly 2019March 2021Allow2010NoNo
16513127METHODS AND APPARATUS TO USE A SWITCHED-MODE POWER SUPPLY AS A SOURCE OF POWER IN A SERVICE PACKJuly 2019March 2021Allow2020NoNo
16503603CONVERTER OUTPUT STAGE WITH MOSFETS HAVING DIFFERENT CHARACTERISTICSJuly 2019June 2021Allow2430YesNo
16460206POWER CONTROLLERS AND CONTROL METHODS FOR REDUCING OUTPUT VOLTAGE RIPPLE WHEN LINE VOLTAGE IS LOWJuly 2019July 2021Allow2420NoNo
16458357TOTEM-POLE BRIDGELESS PFC CONVERSION DEVICE AND METHOD OF OPERATING THE SAMEJuly 2019May 2020Allow1010YesNo
16459169LOW POWER VOLTAGE REFERENCE CIRCUITSJuly 2019September 2022Allow3911NoNo
16448024SYNCHRONOUS RECTIFIER CONTROL CIRCUITJune 2019January 2021Allow1910NoNo
16447864OPERATING A FLYBACK CONVERTER USING A SIGNAL INDICATIVE OF A RESONANT TANK CURRENT OF THE FLYBACK CONVERTERJune 2019January 2021Allow1930YesNo
16471898POWER SUPPLY DEVICE AND METHOD FOR CONTROLLING THE MULTI-PHASE INTERLEAVING OPERATION OF THE POWER SUPPLY DEVICEJune 2019September 2020Allow1520NoNo
16430772Hybrid DC-DC Power Converter with Small Voltage Conversion RatioJune 2019January 2021Allow1911NoNo
16431006A POWER SUPPLY SYSTEM WITH FIRST AND SECOND AC VOLTAGE GENERATORS AND RESPECTIVE 6-PULSE RECTIFIER UNITSJune 2019January 2020Allow710NoNo
16466622MATRIX CONVERTER CONTROL USING PREDICTED OUTPUT CURRENTJune 2019November 2020Allow1710NoNo
16396911SEMICONDUCTOR APPARATUS AND METHOD OF OPERATING THE SAME FOR PREVENTING PHOTOMASK PARTICULATE CONTAMINATIONApril 2019July 2022Allow3920YesNo
16396939CAPACITANCE-COUPLED VOLTAGE TRANSFORMER MONITORINGApril 2019August 2021Allow2700NoNo
16395587CERAMIC HEATERApril 2019October 2020Allow1700NoNo
16394347ZERO CROSSING CONTACTOR AND METHOD OF OPERATINGApril 2019July 2021Allow2620YesNo
16394341INTERNAL VOLTAGE-CANCELING CIRCUIT AND USB DEVICE USING THE SAMEApril 2019May 2021Allow2510NoNo
16393657MULTI-LEVEL STEP-UP CONVERTERS WITH FLYING CAPACITORApril 2019July 2020Abandon1520NoNo
16388857THREE-STAGE POWER CONVERTERS FOR ELECTRIC VEHICLE CHARGINGApril 2019August 2020Allow1620NoNo
16342997CURRENT SOURCE WITH NONVOLATILE STORAGE ELEMENTApril 2019December 2021Allow3240YesNo
16382069Apparatus for True Power Shedding via Switchable Electrical ConnectionsApril 2019October 2020Allow1920NoNo
16381947MODEL PREDICTIVE CONTROL FOR MATRIX CONVERTER OPERATING IN CURRENT CONTROL MODE WITH LOAD CURRENT ESTIMATIONApril 2019November 2021Allow3110NoNo
16341208CONTROL DEVICE AND METHOD FOR CONTROLLING A DC-TO-DC CONVERTER HAVING INPUT INTERFERENCEApril 2019July 2020Allow1520YesNo
16382032ACOUSTIC NOISE REDUCTION IN A DC-DC CONVERTER USING VARIABLE FREQUENCY MODULATIONApril 2019September 2020Abandon1720NoNo
16381366DC BUS CAPACITOR BALANCING FOR THREE-LEVEL, SIX-PHASE VOLTAGE SOURCE CONVERTERSApril 2019February 2022Abandon3460NoNo
16380962CURRENT THRESHOLD REGULATION METHOD USED IN SWITCHING CONVERTERSApril 2019August 2020Allow1620NoNo
16380610CURRENT SENSING SYSTEM COMPRISING A SCALED TRANSISTOR AND METHODS OF OPERATION THEREOFApril 2019December 2019Allow910YesNo
16376358LOW DROPOUT REGULATOR AND PHASE-LOCKED LOOPApril 2019November 2020Allow1940YesYes
16375625AC/DC COMBINED POWER CONVERTING APPARATUS AND HOME APPLIANCE INCLUDING THE SAMEApril 2019January 2020Allow910YesNo
16353031POWER SUPPLY CONTROL DEVICE FOR SETTING MINIMUM ON WIDTH OF OUTPUT SWITCHMarch 2019January 2021Allow2210NoNo
16330458CURRENT LIMITING CIRCUIT FOR LIMITING THE MAGNITUDE OF AN ALTERNATING CURRENTMarch 2019January 2022Allow3410NoNo
16282847Bandgap Current Architecture Optimized for Size and AccuracyFebruary 2019October 2020Allow2011NoNo
16273862VOLTAGE BOOSTER ISOLATION TRANSFORMER SYSTEM AND METHOD OF OPERATING THE SAMEFebruary 2019September 2020Abandon1920NoNo
16270499CURRENT SENSING WITH RDSON CORRECTIONFebruary 2019August 2020Abandon1920NoNo
16248876WAVEFORM SHAPING CIRCUIT, SEMICONDUCTOR DEVICE, AND SWITCHING POWER SUPPLY DEVICEJanuary 2019May 2020Allow1620NoNo
16248154POWER CONVERTER TOPOLOGIES AND CONTROL METHODS FOR WIDE INPUT AND OUTPUT VOLTAGE RANGESJanuary 2019November 2020Allow2240YesNo
16317893RESONANT POWER CONVERSION DEVICE INCLUDING AN ADJUSTMENT AMOUNT CALCULATORJanuary 2019March 2020Allow1400YesNo
16238237SYSTEM AND METHOD FOR POWER CONVERTER INCLUDING INVERTER, RESONANT CIRCUIT. AND VOLTAGE MULTIPLIERJanuary 2019October 2020Allow2130NoNo
16222557DC-DC CONVERTER CIRCUIT WITH SYNCHRONIZATION MODULE AND CORRESPONDING CONVERSION METHODDecember 2018March 2020Allow1520YesNo
16205561METHOD AND APPARATUS FOR LOW-OUTPUT-NOISE, HIGH-POWER-SUPPLY-REJECTION AND HIGH-PRECISION TRIMMABLE BAND-GAP VOLTAGE REFERENCE SUITABLE FOR PRODUCTION TESTNovember 2018February 2020Allow1510YesNo
16198033SWITCHING REGULATOR WITH A FREQUENCY CHARACTERISTICS SEPARATION CIRCUIT AND A PHASE COMPENSATION CIRCUITNovember 2018January 2020Allow1420YesNo
16302399STACKABLE ISOLATED VOLTAGE OPTIMIZATION MODULENovember 2018June 2021Allow3110NoNo
16191592SINGLE INDUCTOR MULTI-OUTPUT BUCK-BOOST CONVERTER AND CONTROL METHOD THEREOFNovember 2018April 2022Allow4140NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner AHMAD, SHAHZEB K.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
3
Examiner Affirmed
1
(33.3%)
Examiner Reversed
2
(66.7%)
Reversal Percentile
86.8%
Higher than average

What This Means

With a 66.7% 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
7
Allowed After Appeal Filing
2
(28.6%)
Not Allowed After Appeal Filing
5
(71.4%)
Filing Benefit Percentile
43.7%
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, 28.6% 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 AHMAD, SHAHZEB K - Prosecution Strategy Guide

Executive Summary

Examiner AHMAD, SHAHZEB K works in Art Unit 2839 and has examined 123 patent applications in our dataset. With an allowance rate of 87.8%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 21 months.

Allowance Patterns

Examiner AHMAD, SHAHZEB K's allowance rate of 87.8% places them in the 68% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by AHMAD, SHAHZEB K receive 1.63 office actions before reaching final disposition. This places the examiner in the 29% 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 AHMAD, SHAHZEB K is 21 months. This places the examiner in the 90% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +5.1% benefit to allowance rate for applications examined by AHMAD, SHAHZEB K. This interview benefit is in the 31% percentile among all examiners. Recommendation: Interviews provide a below-average benefit with this examiner.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 29.5% 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 42.2% of cases where such amendments are filed. This entry rate is in the 65% 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.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 66.7% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 56% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences show above-average effectiveness with this examiner. If you have strong arguments, a PAC request may result in favorable reconsideration.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 66.7% of appeals filed. This is in the 50% 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, 80.0% are granted (fully or in part). This grant rate is in the 83% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 25% 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 1.9% of allowed cases (in the 69% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

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.