USPTO Examiner CHEN ZHITONG - Art Unit 2649

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19171996VECTOR DATA PROJECTION AND FEATURE MATCHING TO DETERMINE THREE-DIMENSIONAL STRUCTUREApril 2025December 2025Allow820NoNo
18721863System for coordinating a presentation on a group of mobile computing devicesJune 2024October 2025Abandon1510NoNo
18665454COEFFICIENT DETERMINATION DEVICE, PIGMENT CONCENTRATION CALCULATION DEVICE, COEFFICIENT DETERMINATION METHOD, AND INFORMATION PROCESSING PROGRAMMay 2024May 2025Allow1200NoNo
18640744EDITABLE CLOCK POSITIONS IN LOCAL CLOCK INCORPORATING NATIONAL CONTENTApril 2024October 2025Allow1810NoNo
18621844USER APPROVAL OPTIONS TO ALLOW OR REJECT NEAR-FIELD ACCESS FOR TECHNICIAN TO CONNECT TO THE SYSTEMMarch 2024March 2026Allow2300NoNo
18617046METHOD AND SYSTEM FOR IMAGE BATCH PROCESSING RECOGNITIONMarch 2024July 2024Allow410NoNo
18596061IMAGE CODING/DECODING METHOD AND APPARATUS THEREFORMarch 2024April 2025Allow1400NoNo
18585547REAL-TIME VIDEO DIMENSIONAL TRANSFORMATIONS OF VIDEO FOR PRESENTATION IN MIXED REALITY-BASED VIRTUAL SPACESFebruary 2024February 2025Allow1200NoNo
18443666METHOD AND APPARATUS FOR SUBJECT IDENTIFICATIONFebruary 2024August 2025Allow1800NoNo
18442446Wearable Personal Wireless Media StationFebruary 2024July 2025Abandon1710NoNo
18422429FLOORPLAN GENERATION BASED ON ROOM SCANNINGJanuary 2024March 2026Allow2530YesNo
18417414Engagement Detection and Attention Estimation for Human-Robot InteractionJanuary 2024March 2025Allow1310YesNo
18412497GENERATION METHOD, DETECTION METHOD, GENERATION DEVICE, AND DETECTION DEVICE OF ZERO WATERMARKING FOR TRAJECTORY DATA, AND STORAGE MEDIUMJanuary 2024March 2024Allow200NoNo
18515421User-Context Aware Rendering Dataset SelectionNovember 2023December 2024Allow1310YesNo
18508081PARTICULATE MATTER IMAGING, IDENTIFICATION, AND ANALYSIS SYSTEMS AND METHODSNovember 2023December 2024Allow1310YesNo
18503312SYSTEMS AND METHODS FOR ENRICHING MODELING TOOLS AND INFRASTRUCTURE WITH SEMANTICSNovember 2023December 2024Allow1310YesNo
18499742IMAGING APPARATUS AND IMAGING SYSTEMNovember 2023February 2025Allow1610YesNo
18280476FLYING OBJECT SURVEILLANCE SYSTEM, COMMUNICATION SATELLITE, AND SURVEILLANCE SATELLITESeptember 2023October 2025Allow2510NoNo
18546988UPLINK POWER CONTROL METHOD AND USER EQUIPMENTAugust 2023February 2026Allow3010NoNo
18449945SIGNAL PRE-SHAPING TO SUPPRESS POWER SUPPLY DISTURBANCESAugust 2023November 2025Allow2700NoNo
18224975SEMI-COHERENT GRAVITATIONAL WAVE BEAM GENERATION AND RELATED APPARATUS, SYSTEMS, AND METHODSJuly 2023August 2025Allow2500NoNo
18347747APPARATUSES, SYSTEMS, AND METHODS FOR INDIRECT ANTENNA TESTINGJuly 2023March 2026Abandon3210NoNo
18346778X-RAY BASED MEASUREMENTS IN PATTERNED STRUCTUREJuly 2023August 2024Allow1410NoNo
18216595METHOD AND APPARATUS FOR PERFORMING UPLINK OPERATION FOR LAYER 2 MOBILITY IN MOBILE WIRELESS COMMUNICATION SYSTEMJune 2023December 2025Allow2910NoNo
18345673Mobile System Including Base Station and Wireless EarbudJune 2023December 2024Abandon4410YesNo
18216272Method for the recovery of analog backscattered informationJune 2023March 2026Abandon3210NoNo
18339479OVERSHOOTING MITIGATION IN OPEN RADIO ACCESS NETWORKJune 2023October 2025Allow2810YesNo
18268059RELAY APPARATUS, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD AND PROGRAMJune 2023December 2025Allow3010NoNo
18332910COMMUNICATION SYSTEM AND METHOD FOR CORRELATING WIRELESS COMMUNICATION PERFORMANCE WITH VEHICLE SYSTEM CONFIGURATIONSJune 2023August 2025Allow2600NoNo
18331549ADVANCED VIDEO DATA STREAM EXTRACTION AND MULTI-RESOLUTION VIDEO TRANSMISSIONJune 2023October 2024Allow1610NoNo
18200480PHONE USER INTERFACEMay 2023March 2026Allow3420YesYes
18195425SMALL CELL BEAM-FORMING ANTENNASMay 2023November 2024Allow1920YesNo
18306285INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHODApril 2023June 2024Allow1310YesNo
18303818Electronic device case with integrated medication containerApril 2023February 2026Abandon3410NoNo
18303274FOLDABLE ELECTRONIC DEVICE COMPRISING ANTENNAApril 2023December 2025Allow3210YesNo
18133309UPLINK POWER CONTROL FOR DISTRIBUTED WIRELESS COMMUNICATIONApril 2023February 2025Allow2220NoNo
18298547WIRED TRANSCEIVER WITH OVERVOLTAGE PROTECTIONSApril 2023January 2026Allow3310NoNo
18297195DATA REMOTE TRANSMISSION AND CHARGING CIRCUIT APPLIED TO VR DEVICE AND DEVICE THEREOFApril 2023July 2025Allow2700NoNo
18247664MOBILITY ATTENUATION TESTING EQUIPMENT FOR 5G HIGH BANDApril 2023October 2025Allow3110NoNo
18191476ELECTRONIC DEVICEMarch 2023December 2025Allow3210NoNo
18246971Window Display Method and DeviceMarch 2023March 2026Allow3511YesNo
18189784RULE INDUCTION TO FIND AND DESCRIBE PATTERNS IN DATAMarch 2023July 2025Allow2840YesNo
18246320METHOD AND SYSTEM FOR PROCESSING SEISMIC IMAGES TO OBTAIN SEISMIC HORIZON SURFACES FOR A GEOLOGICAL FORMATIONMarch 2023February 2024Allow1120YesNo
18186884ELECTRONIC DEVICEMarch 2023October 2025Allow3110NoNo
18183724MOBILE HYBRID RADIO RECEIVER SERVICE FOLLOWING SOURCE SELECTIONMarch 2023November 2025Allow3210YesNo
18175977HOST SATELLITE HAVING PRIORITIZED ANALYTICS ASSOCIATED WITH DETECTED OBJECTS AND MISSION CONSTRAINTS FOR COMMUNICATION WITH CLIENT TERMINALFebruary 2023February 2026Allow3510YesNo
18114851SYSTEMS AND METHODS FOR TRANSMITTING RADIO FREQUENCY SIGNALSFebruary 2023December 2025Allow3410YesNo
18172631User-Context Aware Rendering Dataset SelectionFebruary 2023August 2023Allow610YesNo
18171961METHOD AND DEVICE FOR MEASURING PERFORMANCE IN WIRELESS COMMUNICATION SYSTEMFebruary 2023October 2025Allow3210NoNo
18111067SYSTEMS AND METHODS FOR RESIDUE BUNCH DETECTIONFebruary 2023July 2024Allow1720NoNo
18170569Wearable Personal Wireless Media StationFebruary 2023July 2024Abandon1710NoNo
18170455VARIABLE EXPOSURE PORTABLE PERFUSION MONITORFebruary 2023May 2023Allow310NoNo
18041296APPARATUS, METHODS, AND COMPUTER PROGRAMSFebruary 2023December 2025Allow3410NoNo
18106514A SYSTEM AND METHOD FOR COMPUTING AN ORGANIZATION'S INSURANCE UNDERWRITING SCORE FOR CYBER INSURANCE USING AIFebruary 2023February 2024Allow1210YesNo
18162048SYSTEM WITH ACCESS POINT AND DIRECTIONAL ANTENNAJanuary 2023October 2025Allow3310NoNo
18005902LEARNING MODEL GENERATION METHOD, INFORMATION PROCESSING DEVICE, AND INFORMATION PROCESSING SYSTEMJanuary 2023August 2025Allow3110NoNo
18097759CAMERA SYSTEM FOR PROVIDING AN IN-STORE EXPERIENCE TO A REMOTE USERJanuary 2023October 2023Allow921YesYes
18004521COMMUNICATION SYSTEM AND EVALUATION METHODJanuary 2023January 2026Abandon3610NoNo
18091800ACTUATOR FOR MULTIPHASE SHIFTERDecember 2022August 2025Allow3210NoNo
18069643REAL-TIME VIDEO DIMENSIONAL TRANSFORMATIONS OF VIDEO FOR PRESENTATION IN MIXED REALITY-BASED VIRTUAL SPACESDecember 2022April 2024Abandon1611YesNo
18065628SMART ADAPTION OF TRANSMITTER PROPERTIES WITH RESPECT TO REGULATORY LIMITS FOR RADIATED POWERDecember 2022December 2025Allow3611NoNo
18065176VIDEO RECOGNITION METHOD AND APPARATUS, AND STORAGE MEDIUMDecember 2022February 2026Abandon3820NoNo
18072866METHOD, DEVICE AND SYSTEM OF MULTI-CARRIER CONSTANT ENVELOPE GNSS WAVEFORMS COMPATIBLE WITH EXISTING USER EQUIPMENTDecember 2022June 2025Allow3100NoNo
17927766NOISE JUDGMENT METHOD, NOISE JUDGMENT DEVICE AND PROGRAMNovember 2022May 2025Allow3000NoNo
17992694SYSTEMS AND METHODS FOR USING ARTIFICIAL INTELLIGENCE TO PRESENT GEOGRAPHICALLY RELEVANT USER-SPECIFIC RECOMMENDATIONS BASED ON USER ATTENTIVENESSNovember 2022October 2025Allow3520YesNo
18055010SYSTEMS AND METHODS FOR INSPECTING A RAILROADNovember 2022November 2023Allow1310NoNo
17986244METHOD AND APPARATUS FOR DETERMINING IMAGE DEPTH INFORMATION, ELECTRONIC DEVICE, AND MEDIANovember 2022June 2023Allow710NoNo
17985986MULTIPLE STATION VOICE TRACK CONFLICT AVOIDANCENovember 2022February 2024Allow1500NoNo
17971984WIRELESS EARSETOctober 2022August 2025Allow3410NoNo
170425503D SHAPE MATCHING METHOD AND DEVICE BASED ON 3D LOCAL FEATURE DESCRIPTION USING SGHSOctober 2022January 2025Allow5210NoNo
17957028FILTERING NOISE IN AN EVENT DEVICE SYSTEMSeptember 2022July 2025Allow3310YesNo
17956510GAIN BOOSTING IN ENVELOPE TRACKING POWER AMPLIFIERS USING RF-COUPLED FEEDBACKSeptember 2022March 2025Allow2900NoNo
17913554Switch Switching Method and Related ApparatusSeptember 2022January 2026Allow3920NoNo
17949323PROVISION OF A COMPARISON DATASETSeptember 2022March 2025Allow2910NoNo
17911475INTERFERENCE DETECTION APPARATUS, RADIO BASE STATION, INTERFERENCE DETECTION METHOD, AND PROGRAMSeptember 2022October 2025Abandon3710NoNo
17944093Bit Inversion for Thermal Mitigation in Wireless Power and Data Transfer SystemSeptember 2022October 2025Allow3710NoNo
17902283ELECTRONIC DEVICE AND COMMUNICATION CONTROL METHOD THEREOFSeptember 2022May 2025Allow3310YesNo
17892427Automated Generation And Use Of Building Videos With Accompanying Narration From Analysis Of Acquired Images And Other Building InformationAugust 2022January 2026Allow4120YesYes
17799524SYSTEM AND METHOD FOR SMART CONTOUR COMPLETIONAugust 2022April 2025Allow3210NoNo
17815361Engagement Detection and Attention Estimation for Human-Robot InteractionJuly 2022October 2023Allow1410YesNo
17851066Medical Image Registration Method Based on Progressive ImagesJune 2022October 2024Allow2710NoNo
17847424SYSTEM FOR BINDING MULTIPLE SIM CARDS TO AN ELECTRONIC DEVICEJune 2022October 2023Allow1610YesNo
17840269ADVANCED VIDEO DATA STREAM EXTRACTION AND MULTI-RESOLUTION VIDEO TRANSMISSIONJune 2022March 2023Allow900NoNo
17840074ROBOTIC PICKING SYSTEM AND METHOD OF USEJune 2022July 2023Allow1310NoNo
17839455METHOD AND APPARATUS FOR SUBJECT IDENTIFICATIONJune 2022October 2023Allow1610NoNo
17836146DIGITAL DOMAIN PHOTON PEAK EVENT DETECTION SYSTEM AND METHODJune 2022April 2025Allow3511NoNo
17835218ULTRASOUND IMAGING APPARATUS, SIGNAL PROCESSING METHOD, AND SIGNAL PROCESSING PROGRAMJune 2022March 2025Allow3310NoNo
17782736Dopaminergic Imaging to Predict Treatment Response in Mental IllnessJune 2022December 2025Allow4320NoNo
17826159COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN INFORMATION PROCESSING PROGRAM, INFORMATION PROCESSING APPARATUS, AND METHOD FOR PROCESSING INFORMATIONMay 2022January 2025Allow3210NoNo
17752403MEDICAL IMAGE PROCESSING APPARATUS, MEDICAL IMAGE PROCESSING METHOD, AND PROGRAMMay 2022January 2025Allow3210YesNo
17756276BIOMETRIC INFORMATION DISPLAY APPARATUS, METHOD, AND PROGRAMMay 2022November 2024Allow3010YesNo
17748378METHOD AND AN ELECTRONIC APPARATUS FOR ACQUIRING A FLOOR MAP OF A ROOM LAYOUTMay 2022November 2024Allow3030YesNo
17756174METHOD FOR ASSISTANCE INFORMATION TRANSMISSION AND APPARATUS, TERMINAL, ACCESS NETWORK DEVICE AND STORAGE MEDIUMMay 2022May 2025Allow3620NoNo
17746490IMAGING APPARATUS AND IMAGING SYSTEMMay 2022July 2023Allow1410NoNo
17741177Image data augmentation apparatus and methodMay 2022April 2025Allow3520NoNo
17735626REMOTE ASSISTANCE SYSTEM AND REMOTE ASSISTANCE METHODMay 2022January 2025Abandon3210NoNo
17732432RECEIVER DEVICE AND EYE PATTERN-BASED CONTROL PARAMETER ADJUSTMENT METHODApril 2022March 2025Allow3510YesNo
17731285METHOD AND DEVICE FOR MEASURING CELL CONTRACTILITYApril 2022March 2025Allow3511NoNo
17755151PROBABLISTIC SEGMENTATIONApril 2022December 2025Allow4430YesNo
17725191METHOD AND TERMINAL FOR IMPLEMENTING COMMUNICATIONApril 2022July 2024Allow2710NoNo

Appeals Overview

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

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
15
Examiner Affirmed
10
(66.7%)
Examiner Reversed
5
(33.3%)
Reversal Percentile
52.3%
Higher than average

What This Means

With a 33.3% 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
33
Allowed After Appeal Filing
9
(27.3%)
Not Allowed After Appeal Filing
24
(72.7%)
Filing Benefit Percentile
39.8%
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, 27.3% 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 CHEN, ZHITONG - Prosecution Strategy Guide

Executive Summary

Examiner CHEN, ZHITONG works in Art Unit 2649 and has examined 415 patent applications in our dataset. With an allowance rate of 75.4%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 31 months.

Allowance Patterns

Examiner CHEN, ZHITONG's allowance rate of 75.4% places them in the 41% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by CHEN, ZHITONG receive 2.11 office actions before reaching final disposition. This places the examiner in the 56% percentile for office actions issued. This examiner issues a slightly above-average number of office actions.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by CHEN, ZHITONG is 31 months. This places the examiner in the 55% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +22.0% benefit to allowance rate for applications examined by CHEN, ZHITONG. This interview benefit is in the 67% 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, 34.7% of applications are subsequently allowed. This success rate is in the 77% 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 22.6% of cases where such amendments are filed. This entry rate is in the 29% percentile among all examiners. Strategic Recommendation: This examiner shows below-average receptiveness to after-final amendments. You may need to file an RCE or appeal rather than relying on after-final amendment entry.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 35.3% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 34% percentile among all examiners. Note: Pre-appeal conferences show below-average success with this examiner. Consider whether your arguments are strong enough to warrant a PAC request.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 60.5% of appeals filed. This is in the 37% percentile among all examiners. Of these withdrawals, 39.1% 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, 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 21% percentile). This examiner rarely makes examiner's amendments compared to other examiners. You should expect to make all necessary claim amendments yourself through formal amendment practice.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.0% of allowed cases (in the 27% 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:

  • 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.

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.