USPTO Examiner TAN RICHARD - Art Unit 2849

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18964719COMBO CIRCUIT WITH ELECTROSTATIC DISCHARGE PROTECTIONDecember 2024January 2026Allow1310YesNo
18957985VOLTAGE CONTROLLED OSCILLATOR (VCO) CIRCUITSNovember 2024February 2026Allow1510YesNo
18938290ULTRASONIC OSCILLATOR ELEMENT AND ULTRASONIC TRANSDUCER DEVICENovember 2024October 2025Allow1100NoNo
18933854EMERGENCY DRIVER AND INTELLIGENT MODULE FOR THE EMERGENCY DRIVEROctober 2024January 2026Allow1410NoNo
18929917Solid-State Transformer for Mitigation of Common Mode InsultsOctober 2024October 2025Allow1210YesNo
18891567SOLAR STEPLESS DIMMING LAMPSeptember 2024March 2026Abandon1810NoNo
18828782VOLTAGE-CONTROLLED OSCILLATOR (LC VCO) AND METHOD OF OPERATION THEREOFSeptember 2024February 2026Abandon1710NoNo
18772558MULTI-NODE SERVER AND RACK SERVERJuly 2024November 2025Allow1610NoNo
18769242METHOD AND SYSTEM FOR TRACKING THE OSCILLATION PATH OF A DIRECT DRIVE WIND FARMJuly 2024January 2026Allow1910YesNo
18761432METHOD OF REGULATING FREQUENCY OF PLURALITY OF UNINTERRUPTIBLE POWER SUPPLY UNITS AND CORRESPONDING UNINTERRUPTIBLE POWER SUPPLY UNITJuly 2024December 2025Allow1710YesNo
18761129WIRELESS POWER TRANSMITTING DEVICE AND COMMUNICATION METHOD BY WIRELESS POWER TRANSMITTING DEVICEJuly 2024September 2025Allow1510NoNo
18747631POWER MANAGEMENT SYSTEM AND POWER MANAGEMENT METHODJune 2024September 2025Allow1410NoNo
18745315APPARATUSES, SYSTEMS, AND METHODS FOR NON-MECHANICAL BUTTONSJune 2024July 2025Allow1310NoNo
18677830CAPACITY-OPTIMIZED GRID-FORMING CONTROLMay 2024September 2025Allow1510YesNo
18670969SYSTEMS AND METHODS OF LOAD PRE-CHARGINGMay 2024October 2025Allow1710YesNo
18653179Backup System, Backup Interface Module, and Base PlateMay 2024April 2025Allow1210NoNo
18646872PROCESS FOR CONTROLLING ISOLATED MICROGRIDS BASED ON POWER-BASED CONTROL AND MODIFIED VOLT-VAR FUNCTION METHODSApril 2024October 2025Allow1710YesNo
18703576BATTERY RACK MANAGEMENT APPARATUS AND METHOD FOR OPERATING SAMEApril 2024November 2025Allow1910YesNo
18635329ENERGY PROVISIONINGApril 2024December 2024Allow800NoNo
18618053INDUCTIVE PROXIMITY SWITCH AND METHOD OF OPERATION OF AN INDUCTIVE PROXIMITY SWITCHMarch 2024July 2025Allow1610NoNo
18610488LOAD CONTROL SYSTEM RESPONSIVE TO SENSORS AND MOBILE DEVICESMarch 2024February 2026Allow2310NoNo
18688284ENERGY STORAGE SYSTEM FOR OPTIMAL OPERATION OF NEWLY INSTALLED BATTERY RACK AND CONTROL METHOD THEREFORFebruary 2024November 2025Allow2010YesNo
18589506UNAUTHORIZED READOUT PREVENTION MECHANISM AND UNMANNED VEHICLEFebruary 2024December 2025Allow2110NoNo
18589625SYSTEMS AND METHODS FOR CONTROLLING POWER DEVICESFebruary 2024August 2025Allow1810YesNo
18686669POWER MANAGEMENT APPARATUS AND POWER MANAGEMENT METHODFebruary 2024November 2025Abandon2110NoNo
18438405VOLTAGE CONVERSION DEVICE, AND CONTROL DEVICE FOR VOLTAGE CONVERSION DEVICEFebruary 2024April 2025Allow1400NoNo
18431068APPARATUS AND METHOD FOR COUPLING ELECTROMAGNETIC ENERGY INTO A CAVITY OF A RESONATOR WHICH INCLUDES ONE OR MORE LOOP-GAP RESONATORSFebruary 2024October 2025Allow2010YesNo
18293232Installation Test Circuit For PV System With Rapid ShutdownJanuary 2024July 2025Allow1810NoNo
18423324CONTROL METHOD FOR HOME ENERGY SYSTEM, SYSTEM, ENERGY MANAGEMENT DEVICE, AND STORAGE MEDIUMJanuary 2024August 2025Allow1910NoNo
18418163DISAGGREGATED SOLID STATE POWER DISTRIBUTION SYSTEMJanuary 2024February 2026Allow2520YesNo
18290752CONTACTOR AND GENERAL SWITCHING DEVICE COMPRISED THEREOFJanuary 2024July 2025Allow1810YesNo
18401356PORTABLE POWER SOURCEDecember 2023March 2025Allow1410NoNo
18390825VOLTAGE-CONTROLLED OSCILLATOR (VCO) HAVING CASCODE TRANSISTORS WITH IMPROVED SIGNAL QUALITY AND GAINDecember 2023January 2026Allow2520NoNo
18544776MULTIPHASE-TO-SINGLE-PHASE AUTOMATIC TRANSFER SWITCHDecember 2023July 2025Allow1910NoNo
18570248METHOD AND SENSOR BUS SYSTEMDecember 2023June 2025Allow1810YesNo
18538793REVERSED POWER AND GRID SUPPORT WITH A MODULAR APPROACHDecember 2023January 2025Allow1310NoNo
18535357PASSIVE ELEMENT-THYRISTOR PARALLEL CONNECTION FOR MITIGATING INRUSH CURRENT IN STATIC TRANSFER SWITCHDecember 2023March 2026Allow2720NoNo
18523050SYSTEMS AND METHODS TO HAVE MULTIPLE WELDING-TYPE POWER SUPPLIES CONCURRENTLY SET UPNovember 2023July 2025Allow2010YesNo
18563303POWER SOURCE TRANSFER CIRCUITNovember 2023March 2025Allow1610YesNo
18505191METHOD FOR ESTABLISHING A SUPPLY VOLTAGE AND INVERTERNovember 2023June 2025Allow1910YesNo
18503724SYSTEMS AND METHODS FOR ELECTRIC VEHICLE CHARGING POWER DISTRIBUTIONNovember 2023December 2025Abandon2601NoNo
18386785CONTROLLED ENERGY SYSTEMNovember 2023February 2025Abandon1510NoNo
18558733POWER SUPPLY SYSTEM AND ELECTRICITY STORAGE DEVICENovember 2023April 2025Allow1710NoNo
18385030BATTERY PACKOctober 2023August 2025Allow2110NoNo
18555627A DISPATCHABLE DATACENTRE ENERGY SYSTEM AND A METHOD OF OPERATIONOctober 2023September 2025Allow2310NoNo
18484840OPTIMIZED POWER DISTRIBUTION TO TRANSPORT CLIMATE CONTROL SYSTEMS AMONGST ONE OR MORE ELECTRIC SUPPLY EQUIPMENT STATIONSOctober 2023November 2024Allow1310YesNo
18375748Method and apparatus for receiving FSK signalsOctober 2023July 2024Allow1010YesNo
18373956POWER CABLE WITH DIFFERENT TYPES OF CONNECTORSSeptember 2023June 2025Allow2110NoNo
18368631POWER SUPPLY CONTROL APPARATUS, METHOD AND RECORDING APPARATUSSeptember 2023April 2025Allow1910NoNo
18466310POWER SYSTEM AND METHOD FOR ADJUSTING A RELEASE VOLTAGE OF A BI-DIRECTIONAL CONVERTERSeptember 2023January 2025Allow1710YesNo
18243423FOUR QUADRANT PARALLELING CONTROL FOR INVERTERSSeptember 2023October 2025Allow2610YesNo
18459833AUTOMATED EXTERNAL DEFIBRILLATION (AED) ELECTRODESSeptember 2023February 2026Allow3020YesNo
18459304PHYSICS PACKAGES INCLUDING ATOMIC OR MOLECULAR VAPORS AND SUB-WAVELENGTH GRATING WAVEGUIDES AND/OR RADIO FREQUENCY WAVEGUIDESAugust 2023August 2025Allow2410YesNo
18279303ENERGY STORAGE SYSTEM ASSOCIATED WITH SOLAR SYSTEM AND METHOD FOR CONTROLLING ENERGY STORAGE SYSTEMAugust 2023May 2025Allow2110NoNo
18239212AC SWITCH PFC WITH INTEGRATED CHARGER AND DC-DC FOR ONLINE UPS SYSTEMSAugust 2023June 2024Allow910NoNo
18547992MOTOR AND DRIVERAugust 2023March 2025Allow1910YesNo
18278424OVEN-CONTROLLED CRYSTAL OSCILLATORAugust 2023February 2025Allow1710NoNo
18229230APPARATUS AND METHOD FOR TRANSMITTING POWER WIRELESSLYAugust 2023April 2025Abandon2010NoNo
18364403ELECTRONIC DEVICE FOR WIRELESSLY TRANSMITTING POWER INCLUDING A PLURALITY OF COILS, AND METHOD OF OPERATING THE SAMEAugust 2023February 2025Allow1810YesNo
18227132SERIES RESONANT POWER CONVERTERJuly 2023March 2025Allow2010NoNo
18226316SYSTEMS AND METHODS FOR INVERTER AND DC/DC CONVERTER OPERATIONJuly 2023January 2025Allow1710NoNo
18359401MULTI-FUNCTION CONVERTER UNITJuly 2023October 2024Allow1510YesNo
18351848ELECTRONIC DEVICE AND METHOD FOR CONTROLLING HEAT IN ELECTRONIC DEVICEJuly 2023January 2025Allow1810NoNo
18343962ENERGY STORAGE SYSTEMJune 2023December 2024Allow1700NoNo
18259851PIN-SHORT DAMAGE PROTECTIONJune 2023May 2025Allow2310YesNo
18341854INTEGRATED LC OSCILLATOR OF COMPACT LAYOUT AND LOW PHASE NOISE AND METHOD THEREOFJune 2023January 2025Allow1910NoNo
18213093SCALABLE RULES-BASED OBJECT-ORIENTED POWER SYSTEM CONTROL SCHEMEJune 2023January 2026Allow3120YesNo
18210319SYSTEM AND METHOD TO CONNECT AND DISCONNECT ONE OR MORE LITHIUM-ION BATTERYJune 2023February 2026Allow3220YesNo
18321105OSCILLATOR WITH FREQUENCY CONTROLMay 2023May 2025Allow2420YesNo
18313677RADIATOR FOR PROVIDING TERAHERTZ ELECTROMAGNETIC RADIATIONMay 2023November 2025Allow3020YesNo
18310612METHOD AND APPARATUS FOR OSCILLATOR FREQUENCY CALIBRATIONMay 2023August 2025Allow2710NoNo
18141849System and Method for a Backup Power SupplyMay 2023November 2024Abandon1920NoNo
18310278SYSTEMS AND METHODS FOR SYNCHRONIZING GROUND POWER UNITSMay 2023April 2025Allow2310YesNo
18306619CRYSTAL OSCILLATOR AND METHOD OF MAKING THE SAMEApril 2023January 2025Allow2110NoNo
18306255CHIP WITH AUTOMATIC CLOCK SIGNAL CORRECTION AND AUTOMATIC CORRECTION METHODApril 2023December 2024Allow2010YesNo
18305996FLIP-FLOP CELLApril 2023April 2025Allow2430YesNo
18250182UNINTERRUPTIBLE POWER SUPPLY APPARATUSApril 2023October 2024Allow1810YesNo
18030862SYSTEM AND METHOD FOR SUPPORTING CREATION OF SYSTEM PLAN TO CHANGE CONFIGURATION OF POWER SYSTEMApril 2023August 2024Allow1700NoNo
18124963ELECTRONIC DEVICE FOR TRANSMITTING WIRELESS POWER AND OPERATING METHOD THEREFORMarch 2023March 2025Allow2410YesNo
18120493SYSTEM FOR CONTROLLING POWER TO LOAD FROM POWER SUPPLY LINEMarch 2023February 2024Allow1210YesNo
18024135BATTERY SWAPPING STATION HAVING MODE IN WHICH BATTERY PACK IS OPERATED AT TIME OF POWER SUPPLY INTERRUPTIONMarch 2023September 2024Allow1910NoNo
18114233PORTABLE POWER SOURCEFebruary 2023April 2024Abandon1310NoNo
18113202QUANTUM INTERFERENCE DEVICEFebruary 2023November 2024Allow2000NoNo
18108657MEMORY PACKAGE AND MEMORY MODULE INCLUDING THE MEMORY PACKAGEFebruary 2023February 2026Allow3630YesNo
18160451TECHNIQUES FOR ENERGY HARVESTING USING A SQUARE WAVEFORMJanuary 2023February 2025Allow2410NoNo
18156558VOLTAGE COMPENSATION APPARATUS, INVERTER APPARATUS, AND PHOTOVOLTAIC POWER GENERATION SYSTEMJanuary 2023March 2025Allow2610YesNo
18005765ELECTRIC-POWER CONVERTERJanuary 2023June 2024Allow1700NoNo
18088608OSCILLATOR CIRCUIT AND TEMPERATURE COMPENSATION METHOD FOR OSCILLATOR CIRCUITDecember 2022July 2024Allow1810YesNo
18066552ELECTRICAL ARCHITECTURE COMPRISING AT LEAST ONE LINEAR PHOTOVOLTAIC INSTALLATION FORMED BY SEVERAL GROUPS OF PHOTOVOLTAIC PANELS AND BY A DC NETWORK, CONNECTED TO AN AC TRANSMISSION NETWORK AND/OR AN AC DISTRIBUTION NETWORK WITH ARBITRATION OF THE POWER INJECTED FROM THE DC NETWORK TO THE AC NETWORKDecember 2022May 2025Abandon2920NoNo
18061550POWER CONTROL METHOD AND SYSTEM FOR BATTERY CHARGING AND SWAP STATION, MEDIUM, APPARATUS, AND BATTERY CHARGING AND SWAP STATIONDecember 2022July 2024Allow1910NoNo
17927393WIND POWER PLANT COLLECTOR SYSTEMNovember 2022November 2024Allow2420YesNo
17992560MICROGRID SYSTEM FOR SOLAR WATER PUMPSNovember 2022October 2024Abandon2310NoNo
17989842CONTROL OF VEHICLE AND HOME ENERGY STORAGE SYSTEMSNovember 2022August 2024Allow2110YesNo
17989376POWER ELECTRONIC REGULATORNovember 2022May 2025Allow3010YesNo
18047842CONVERTIBLE TRANSFER SWITCHOctober 2022August 2024Allow2230NoNo
17969194Power Supply System, Power Supply Method, Control Apparatus, and Computer Storage MediumOctober 2022March 2024Allow1610NoNo
17960273SWITCH DEVICE FOR A DISTRIBUTION NETWORK FED BY MORE THAN ONE INDEPENDENT POWER SOURCEOctober 2022October 2024Allow2510NoNo
17956554POWER SUPPLY CIRCUIT WITH SYNCHRONIZATION FUNCTIONALITYSeptember 2022January 2024Allow1610YesNo
17915992MEDIUM-VOLTAGE PHOTOVOLTAIC GRID-CONNECTION INVERTER SYSTEM, AND PHOTOVOLTAIC POWER GENERATION SYSTEMSeptember 2022May 2024Allow2010NoNo
17955510ELECTRONIC DEVICESeptember 2022May 2025Allow3120NoNo

Appeals Overview

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

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
5
Examiner Affirmed
3
(60.0%)
Examiner Reversed
2
(40.0%)
Reversal Percentile
62.3%
Higher than average

What This Means

With a 40.0% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is above the USPTO average, indicating that appeals have better success here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
10
Allowed After Appeal Filing
5
(50.0%)
Not Allowed After Appeal Filing
5
(50.0%)
Filing Benefit Percentile
80.7%
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, 50.0% 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.

Examiner TAN, RICHARD - Prosecution Strategy Guide

Executive Summary

Examiner TAN, RICHARD works in Art Unit 2849 and has examined 263 patent applications in our dataset. With an allowance rate of 93.2%, this examiner allows applications at a higher rate than most examiners at the USPTO. Applications typically reach final disposition in approximately 22 months.

Allowance Patterns

Examiner TAN, RICHARD's allowance rate of 93.2% places them in the 80% percentile among all USPTO examiners. This examiner is more likely to allow applications than most examiners at the USPTO.

Office Action Patterns

On average, applications examined by TAN, RICHARD receive 1.64 office actions before reaching final disposition. This places the examiner in the 32% 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 TAN, RICHARD is 22 months. This places the examiner in the 89% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +4.3% benefit to allowance rate for applications examined by TAN, RICHARD. This interview benefit is in the 28% 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, 34.1% of applications are subsequently allowed. This success rate is in the 75% percentile among all examiners. Strategic Insight: RCEs are highly effective with this examiner compared to others. If you receive a final rejection, filing an RCE with substantive amendments or arguments has a strong likelihood of success.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 54.9% of cases where such amendments are filed. This entry rate is in the 81% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 200.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 96% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences are highly effective with this examiner compared to others. Before filing a full appeal brief, strongly consider requesting a PAC. The PAC provides an opportunity for the examiner and supervisory personnel to reconsider the rejection before the case proceeds to the PTAB.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 61.5% of appeals filed. This is in the 39% percentile among all examiners. Of these withdrawals, 12.5% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner shows below-average willingness to reconsider rejections during appeals. Be prepared to fully prosecute appeals if filed.

Petition Practice

When applicants file petitions regarding this examiner's actions, 71.4% are granted (fully or in part). This grant rate is in the 78% 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 26% 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 3.3% of allowed cases (in the 75% 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:

  • Consider after-final amendments: This examiner frequently enters after-final amendments. If you can clearly overcome rejections with claim amendments, file an after-final amendment before resorting to an RCE.
  • RCEs are effective: This examiner has a high allowance rate after RCE compared to others. If you receive a final rejection and have substantive amendments or arguments, an RCE is likely to be successful.
  • Request pre-appeal conferences: PACs are highly effective with this examiner. Before filing a full appeal brief, request a PAC to potentially resolve issues without full PTAB review.

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.