USPTO Examiner CHAN TSZFUNG JACKIE - Art Unit 2837

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18715106TRANSFORMER SYSTEM FOR A DIRECT CURRENT CONVERTER SYSTEMMay 2024March 2025Allow920YesNo
18633202COMMON MODE FILTERApril 2024March 2025Allow1110NoNo
18442523COIL ELECTRONIC COMPONENTFebruary 2024June 2025Allow1611YesNo
18494370INDUCTOR COMPONENTOctober 2023June 2025Allow2021YesNo
18494529COIL COMPONENTOctober 2023October 2024Allow1110YesNo
18490879INDUCTOR COMPONENTOctober 2023September 2024Allow1111NoNo
18381797COIL COMPONENT AND MANUFACTURING METHOD FOR THE SAMEOctober 2023April 2025Allow1821YesNo
18451635MAGNETIC COUPLING COIL ELEMENTAugust 2023April 2025Allow2021NoNo
18309657INDUCTOR COMPONENTApril 2023June 2024Allow1311NoNo
18104835Wireless Power Transfer Using Inductive CouplingFebruary 2023February 2024Allow1310NoNo
18015356ELECTRICAL INDUCTION DEVICE WITH CONTACT ARRANGEMENT FOR ELECTRICALLY CONTACTING AN ELECTRICAL CONDUCTORJanuary 2023June 2023Allow500NoNo
18072845COMMON MODE FILTERDecember 2022January 2024Allow1310NoNo
17884121COIL COMPONENTAugust 2022June 2024Allow2221YesNo
17866976COIL COMPONENTJuly 2022May 2025Allow3440YesNo
17731498SUBSTRATE EMBEDDED MAGNETIC CORE INDUCTORS AND METHOD OF MAKINGApril 2022October 2024Allow3021YesNo
17653134MULTI-WINDING INDUCTOR AND POWER SUPPLY MODULEMarch 2022June 2025Allow4000YesNo
17563004MULTILAYER ELECTRONIC COMPONENTDecember 2021June 2025Allow4200YesNo
17617235SOUNDPROOFING TRANSFORMERDecember 2021December 2024Allow3601YesNo
17541993ELECTRONIC COMPONENTDecember 2021January 2024Allow2610YesNo
17525527TEMPERATURE REGULATION OF AN INDUCTOR ASSEMBLYNovember 2021February 2024Allow2700NoNo
17514292ELECTRONIC COMPONENTOctober 2021July 2023Allow2000NoNo
17504330COIL COMPONENT AND MANUFACTURING METHOD THEREFOROctober 2021January 2025Allow3911NoNo
17499801COIL COMPONENTOctober 2021March 2025Allow4220YesNo
17476430INDUCTOR COMPONENTSeptember 2021May 2025Allow4421YesNo
17472301COIL COMPONENTSeptember 2021April 2024Allow3200NoNo
17437680INDUCTORSeptember 2021September 2024Allow3610YesNo
17437682INDUCTORSeptember 2021August 2024Allow3610YesNo
17465503COIL DEVICESeptember 2021June 2025Allow4621YesNo
17462902SURFACE MOUNT INDUCTORAugust 2021May 2025Abandon4401NoNo
17425999HIGH-FREQUENCY TRANSFORMERJuly 2021April 2024Allow3300YesNo
17381745INDUCTORJuly 2021June 2025Allow4721YesNo
17358318Integrated Circuit with Laminated Magnetic Core Inductor and Magnetic Flux Closure LayerJune 2021May 2024Allow3511YesNo
17339847COMMON-MODE CHOKE COIL AND METHOD OF MANUFACTURING COMMON-MODE CHOKE COILJune 2021November 2023Allow3011YesNo
17336430TRANSFORMER WITH INTEGRATED COOLINGJune 2021August 2024Allow3910NoNo
17318722COIL COMPONENTMay 2021July 2023Allow2620YesNo
17292827REACTORMay 2021July 2024Allow3810NoNo
17290655MEMS SOLENOID TRANSFORMER AND MANUFACTURING METHOD THEREOFApril 2021December 2024Allow4411NoNo
17236232INDUCTOR DEVICEApril 2021September 2024Allow4111YesNo
17236215INTEGRATED CIRCUITApril 2021August 2024Allow4010NoNo
17235642SURFACE MOUNTED INDUCTOR AND METHOD FOR MANUFACTURING THE SAMEApril 2021February 2025Abandon4620YesNo
17235762INDUCTOR COMPONENTApril 2021August 2024Abandon4021YesNo
17220093THERMAL MANAGEMENT OF PLANAR TRANSFORMER WINDINGS AND CORESApril 2021December 2024Allow4411NoNo
17218955COIL COMPONENTMarch 2021March 2025Allow4721YesNo
17202069INDUCTOR COMPONENTMarch 2021April 2025Abandon4921NoNo
17274932STATIONARY INDUCTION APPARATUSMarch 2021January 2024Allow3400NoNo
17191971COIL COMPONENTMarch 2021March 2025Allow4830YesNo
17189835COIL COMPONENTMarch 2021December 2024Allow4621NoNo
17159728COIL COMPONENTJanuary 2021April 2025Allow5021YesNo
17159658System To Optimize Voltage Distribution Along High Voltage Doubler StringJanuary 2021November 2023Allow3401NoNo
17141695COMMON MODE FILTERJanuary 2021September 2022Allow2000NoNo
17257482CURRENT TRANSFORMERDecember 2020June 2024Abandon4110NoNo
17106086COIL DEVICE AND METHOD FOR MANUFACTURING THE SAMENovember 2020June 2024Allow4321NoNo
17056778BLANK FOR A CONDUIT ARRANGEMENTNovember 2020August 2024Allow4511YesNo
16949573Inductor Made of Component Carrier Material Comprising Electrically Conductive Plate StructuresNovember 2020February 2024Allow4011NoNo
17035914STACKED INDUCTOR DEVICESeptember 2020April 2024Allow4311NoNo
17033833PRIMARY COIL ASSEMBLY FOR TRANSFORMER AND TRANSFORMER INCLUDING THE SAMESeptember 2020July 2023Allow3400YesNo
17026171CABLE TELEVISION APPARATUS WITH HIGH SATURATION CURRENT TRANSFORMERSeptember 2020August 2024Abandon4711NoNo
17023678INDUCTOR DEVICESeptember 2020July 2024Allow4621YesNo
17021842INDUCTOR COMPONENT AND METHOD FOR MANUFACTURING INDUCTOR COMPONENTSeptember 2020December 2024Allow5131YesNo
17018455COIL COMPONENTSeptember 2020January 2025Allow5221NoNo
17015331INDUCTOR DEVICESeptember 2020August 2023Allow3611NoNo
17014063INDUCTOR DEVICESeptember 2020May 2024Allow4521YesNo
17003042Devices and Methods for an Electromagnetic CoilAugust 2020October 2023Abandon3701NoNo
16999042Integrally-Molded Inductor and Method for Manufacturing SameAugust 2020September 2024Abandon4921NoNo
16990218COIL COMPONENTAugust 2020August 2023Allow3611NoNo
16929280COIL COMPONENTJuly 2020December 2023Allow4121YesNo
16928407COMMON MODE FILTERJuly 2020October 2020Allow300NoNo
16928934INDUCTOR COMPONENTJuly 2020August 2023Allow3721YesNo
16901281TransformerJune 2020March 2024Allow4541YesNo
16894701INDUCTOR COMPONENT, PACKAGE COMPONENT, AND SWITCHING REGULATORJune 2020November 2023Allow4121YesNo
16860337Compact Vertical Inductors Extending in Vertical PlanesApril 2020December 2020Allow710NoNo
16843686INDUCTOR COMPONENTApril 2020November 2023Allow4311YesNo
16842713INDUCTOR AND TRANSFORMERApril 2020October 2022Allow3000NoNo
16834274COIL COMPONENTMarch 2020April 2023Allow3711YesNo
16829112INDUCTOR DEVICEMarch 2020March 2024Allow4721NoNo
16825912MULTILAYER COIL COMPONENT AND METHOD FOR MANUFACTURING SAME, AS WELL AS CIRCUIT BOARD CARRYING MULTILAYER COIL COMPONENTMarch 2020August 2023Allow4111NoNo
16814893MULTILAYER COIL COMPONENTMarch 2020May 2023Allow3820YesNo
16808593REACTOR HAVING IRON CORES AND COILSMarch 2020January 2021Allow1010NoNo
16804047PLANAR TRANSFORMERFebruary 2020April 2023Allow3711NoNo
16778738Magnetic Structures for Large Air GapJanuary 2020April 2023Allow3931YesNo
16777778INDUCTOR COMPONENTJanuary 2020July 2023Allow4211NoNo
16744484INTEGRATED TRANSFORMERJanuary 2020December 2021Allow2321NoNo
16719709LAMINATED TRANSFORMER AND MANUFACTURING METHOD THEREOFDecember 2019May 2024Allow5341NoNo
16719016COIL COMPONENTDecember 2019February 2021Allow1411YesNo
16718690Electronic Package for an Electrically Small Device with Integrated Magnetic Field BiasDecember 2019August 2023Allow4411NoNo
16690691COMMON MODE FILTERNovember 2019June 2020Allow700NoNo
16680324MODULATED INDUCTANCE MODULENovember 2019August 2021Allow2120NoNo
16669909Integrated Voltage Regulator with Integrated Air-Core InductorOctober 2019September 2023Allow4711NoNo
16668700COIL COMPONENTOctober 2019August 2023Allow4521NoNo
16668611COIL COMPONENTOctober 2019March 2023Allow4121NoNo
16666965COIL COMPONENTOctober 2019November 2022Allow3720NoNo
16655417INDUCTOR DEVICES AND STACKED POWER SUPPLY TOPOLOGIESOctober 2019September 2024Abandon5921NoNo
16597490COIL ELECTRONIC COMPONENTOctober 2019March 2025Allow6030YesNo
16592593COIL ELECTRONIC COMPONENTOctober 2019March 2023Allow4221YesNo
16591283COIL ELECTRONIC COMPONENTOctober 2019November 2023Allow4931YesNo
16588655INDUCTOR STRUCTURESeptember 2019October 2024Abandon6021NoNo
16498575ARRANGEMENT OF INTERLEAVED WINDINGS FOR POWER TRANSFORMERSSeptember 2019June 2022Allow3210YesNo
16575565COIL-EMBEDDED CERAMIC SUBSTRATESeptember 2019September 2022Allow3500YesNo
16572862Coil ComponentSeptember 2019September 2024Allow6040YesNo
16573340COIL ELECTRONIC COMPONENTSeptember 2019May 2025Allow6040YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner CHAN, TSZFUNG JACKIE.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
10
Examiner Affirmed
6
(60.0%)
Examiner Reversed
4
(40.0%)
Reversal Percentile
61.6%
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
19
Allowed After Appeal Filing
5
(26.3%)
Not Allowed After Appeal Filing
14
(73.7%)
Filing Benefit Percentile
35.3%
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, 26.3% 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 CHAN, TSZFUNG JACKIE - Prosecution Strategy Guide

Executive Summary

Examiner CHAN, TSZFUNG JACKIE works in Art Unit 2837 and has examined 737 patent applications in our dataset. With an allowance rate of 80.2%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 33 months.

Allowance Patterns

Examiner CHAN, TSZFUNG JACKIE's allowance rate of 80.2% places them in the 43% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by CHAN, TSZFUNG JACKIE receive 1.68 office actions before reaching final disposition. This places the examiner in the 47% 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 CHAN, TSZFUNG JACKIE is 33 months. This places the examiner in the 28% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +18.9% benefit to allowance rate for applications examined by CHAN, TSZFUNG JACKIE. This interview benefit is in the 66% 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, 35.4% of applications are subsequently allowed. This success rate is in the 75% 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 29.7% of cases where such amendments are filed. This entry rate is in the 34% 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, 44.4% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 38% 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 47.4% of appeals filed. This is in the 9% percentile among all examiners. Of these withdrawals, 22.2% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner rarely withdraws rejections during the appeal process compared to other examiners. If you file an appeal, be prepared to fully prosecute it to a PTAB decision. Per MPEP § 1207, the examiner will prepare an Examiner's Answer maintaining the rejections.

Petition Practice

When applicants file petitions regarding this examiner's actions, 57.1% are granted (fully or in part). This grant rate is in the 73% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 1.5% of allowed cases (in the 73% percentile). This examiner makes examiner's amendments more often than average to place applications in condition for allowance (MPEP § 1302.04).

Quayle Actions: This examiner issues Ex Parte Quayle actions in 0.3% of allowed cases (in the 47% 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:

    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.