USPTO Examiner SEHN MICHAEL L - Art Unit 3745

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19293888HYDROELECTRIC POWER GENERATION UTILIZING TIDAL FLOWS AND CORIOLIS FORCEAugust 2025January 2026Allow600YesNo
19252967METHOD TO TIE COMPOSITE VANE PLATFORM AND AIRFOIL DESIGN DETAILSJune 2025January 2026Allow710NoNo
19242046TURBINE ENGINE WITH COMPOSITE AIRFOILSJune 2025December 2025Allow610NoNo
19227642TURBINE ENGINE WITH COMPOSITE AIRFOILSJune 2025August 2025Allow300YesNo
19227649TURBINE ENGINE WITH COMPOSITE AIRFOILSJune 2025December 2025Allow710NoNo
19214414TURBINE ENGINE WITH COMPOSITE AIRFOILSMay 2025November 2025Allow610NoNo
19214354TURBINE ENGINE WITH COMPOSITE AIRFOILSMay 2025October 2025Allow510NoNo
19128462FIBROUS TEXTURE FOR A CASING MADE OF COMPOSITE MATERIAL WITH REINFORCED FLANGESMay 2025November 2025Allow600YesNo
19186738COMPOSITE BLADEApril 2025December 2025Allow810NoNo
19170305SEAL ASSEMBLY FOR A ROTARY MACHINEApril 2025January 2026Allow1020YesNo
19090318COMPRESSOR BLEED AIR COLLECTOR AND EXHAUST DUCTING FOR GAS TURBINE ENGINE SYSTEMSMarch 2025November 2025Allow800YesNo
19089903POWER TURBINE BLADES IN GAS TURBINE ENGINESMarch 2025September 2025Allow610NoNo
19072955IMPELLER WHEELMarch 2025September 2025Allow710NoNo
19067448High Capacity, Shallow Draft, Ocean-Borne Wind TurbineFebruary 2025November 2025Allow810NoNo
19034964VARIABLE PITCH AIRFOIL ASSEMBLY FOR A GAS TURBINE ENGINEJanuary 2025July 2025Allow501NoNo
19033762UMBRELLA CLAMPING FANJanuary 2025September 2025Allow800YesNo
19014587CEILING FAN WITH BLADE HUBJanuary 2025January 2026Allow1310NoNo
18877899TURBOMACHINE BLADING ASSEMBLY COMPRISING MEANS FOR LIMITING VIBRATION BETWEEN PLATFORMSDecember 2024September 2025Allow900YesNo
18876240PITCH CHANGE MECHANISM WITH AN ACTUATOR SURROUNDING A FLUID TRANSFER BEARINGDecember 2024January 2026Allow1310NoNo
18979662FANDecember 2024December 2025Allow1210NoNo
18869635TURBOMACHINE BLADE, TURBOMACHINE AND METHOD FOR MANUFACTURING THE BLADENovember 2024October 2025Allow1110NoNo
18929503PROPELLER GROUND STOP MECHANISMOctober 2024May 2025Allow610YesNo
18860295PROPELLER BLADE OR AIRFOIL WITH WOUND COMPOSITE ROOTOctober 2024June 2025Allow710NoNo
18829998PARTIAL SHEAR TUBE Y-WEAVE TRAILING EDGE FOR A CMC VANE AND METHOD THEREFORSeptember 2024September 2025Allow1310NoNo
18819149DUAL AIR SOURCE BEARING ASSEMBLY HOUSING FOR AN AIRCRAFT PROPULSION SYSTEMAugust 2024October 2025Allow1410NoNo
18840255AXIAL TURBOMACHINE COMPRESSOR WITH CONTROLLED RECIRCULATION BETWEEN THE INNER SHROUD AND THE ROTORAugust 2024November 2025Allow1510NoNo
18806969TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024February 2025Allow610NoNo
18807233TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024January 2025Allow510NoNo
18807374TURBINE ENGINE WITH COMPSITE AIRFOILSAugust 2024February 2025Allow610YesNo
18806835TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024January 2025Allow510NoNo
18792695TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024January 2025Allow610NoNo
18792941TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024January 2025Allow610NoNo
18792952TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024February 2025Allow710NoNo
18792961TURBINE ENGINE WITH COMPOSITE AIRFOILSAugust 2024February 2025Allow610NoNo
18777644TURBINE ENGINE WITH COMPOSITE AIRFOILSJuly 2024February 2025Allow710NoNo
18777725TURBINE ENGINE WITH COMPOSITE AIRFOILSJuly 2024February 2025Allow710NoNo
18772879TIE SHAFT FOR ENGINE ROTATING ASSEMBLYJuly 2024September 2025Allow1410NoNo
18764770TURBINE ENGINE WITH COMPOSITE AIRFOILSJuly 2024January 2025Allow710NoNo
18722026CMC MATERIALS WITH INTEGRATED THERMOCOUPLEJune 2024November 2024Allow500NoNo
18742456POWERED TURBO-EXPANDER COMBINING CENTRIFUGAL COMPRESSOR AND AN AXIAL FLOW TURBINEJune 2024August 2025Allow1420YesNo
18741419TURBINE ENGINE WITH COMPOSITE AIRFOILSJune 2024February 2025Allow810NoNo
18739753PROPELLERJune 2024April 2025Abandon1110YesNo
18717869METHOD FOR PRODUCING A BLADED COMPONENT FOR AN AIRCRAFT TURBINE ENGINEJune 2024December 2025Allow1810NoNo
18736903METHOD FOR SIZING STUBS OPTIMIZED FOR ORBITAL WELDING OF BLADES ON A TURBOMACHINE ROTORJune 2024March 2025Allow1010NoNo
18735569SYSTEM AND METHOD FOR COMPENSATING FOR ROTOR IMBALANCE IN A WIND TURBINEJune 2024May 2025Allow1100NoNo
18731485FAN AND ELECTRONIC DEVICEJune 2024October 2025Allow1610NoNo
18655490PROTECTION SYSTEMMay 2024June 2025Allow1411NoNo
18651545FAN WITH MULTILAYER FAN BLADESApril 2024August 2025Allow1510NoNo
18648597RETAINING NUT WITH INTEGRATED OIL SCOOPApril 2024April 2025Allow1200NoNo
18649081WHEELS INCLUDING A COATING LAYER AND METHODS FOR MAKING THE SAMEApril 2024November 2025Allow1931NoNo
18705827Coating for Aluminum Alloy AerostructuresApril 2024October 2025Allow1811YesNo
18645037HANGING NECK FANApril 2024February 2026Allow2211NoNo
18640177METHOD FOR SIZING STUBS OPTIMIZED FOR ORBITAL WELDING OF BLADES ON A TURBOMACHINE ROTORApril 2024March 2025Allow1110NoNo
18701017BLADE FOR A LOW-NOISE INDUSTRIAL AXIAL FAN, INDUSTRIAL AXIAL FAN AND PROCESS FOR MANUFACTURING A BLADE OF AN INDUSTRIAL AXIAL FANApril 2024July 2025Allow1510NoNo
18632959WOVEN REINFORCING FIBER AIRFOIL STRUCTURE FOR A TURBINE ENGINEApril 2024October 2025Allow1820NoNo
18631471METHOD OF MITIGATING ROTOR BOW IN A TURBINE ENGINE ROTORApril 2024June 2025Allow1411YesNo
18630268WIND TURBINE ROTOR BLADE WITH ACCESS WINDOWApril 2024December 2024Allow810NoNo
18622527METHOD FOR OPERATING A WIND TURBINE AND WIND TURBINEMarch 2024March 2025Allow1110NoNo
18694821METHOD FOR PREPARING A ROOT OF A TURBOMACHINE BLADEMarch 2024May 2025Allow1420YesNo
18610855METHOD AND SYSTEM OF FORMING A COMPOSITE AIRFOIL HAVING A SET OF PLIESMarch 2024October 2025Allow1910YesNo
18604004QUICK INSTALLATION CEILING FAN BLADESMarch 2024August 2024Allow500NoNo
18597343BLOWER WHEEL ASSEMBLIES AND METHODSMarch 2024April 2025Allow1310NoNo
18594594TURBINE ENGINE WITH REDUCED CROSS FLOW AIRFOILSMarch 2024June 2025Allow1530YesNo
18688958AXIAL FAN MOTORMarch 2024February 2025Allow1211NoNo
18592685CENTRIFUGAL FANMarch 2024July 2025Allow1720NoNo
18687560PROPELLER FAN, BLOWER, AND AIR CONDITIONERFebruary 2024January 2025Allow1000YesNo
18588423METHOD FOR MANUFACTURING A COMPOSITE BLADED DISK OR ROTORFebruary 2024March 2025Allow1300NoNo
18682902SEALING DEVICE AND FLOW MACHINE WITH THE SEALING DEVICEFebruary 2024September 2025Allow2000YesNo
18681767METHOD OF CALIBRATING A REFERENCE OF A WIND TURBINEFebruary 2024March 2025Allow1310YesNo
18434152DIFFUSER PIPE FOR AN AIRCRAFT PROPULSION SYSTEMFebruary 2024July 2025Allow1820NoNo
18430341FAN IMPELLER STRUCTUREFebruary 2024March 2026Allow2560YesNo
18418263HANDHELD FANJanuary 2024July 2024Allow611NoNo
18414578AIRFOIL WITH VENTURI TUBEJanuary 2024February 2025Allow1320NoNo
18399070METHOD FOR CONTROLLING A WIND POWER INSTALLATIONDecember 2023June 2025Allow1710YesNo
18571688METHOD FOR BALANCING FAN VANES WITH TRAILING EDGE MACHININGDecember 2023August 2024Allow800YesNo
18571015FIBROUS PREFORM WITH STIFFENERS FORMED BY UNIDIRECTIONAL YARN LAYERSDecember 2023June 2024Allow600YesNo
18534154METHOD TO TIE COMPOSITE VANE PLATFORM AND AIRFOIL DESIGN DETAILSDecember 2023April 2025Allow1611NoNo
18524013METHOD OF CONTROLLING A WIND FARM USING A REINFORCEMENT LEARNING METHODNovember 2023January 2025Allow1310NoNo
18525121COMPOSITE AIRFOILNovember 2023December 2025Allow2410NoNo
18564494DIFFERENTIATED SHORTENING OF STRANDS OF THE FIBROUS REINFORCEMENT OF A FAN BLADENovember 2023November 2024Allow1200NoNo
18513794METHOD OF MANUFACTURING CMC COMPONENTNovember 2023April 2025Allow1700NoNo
18514403BLOWER FANNovember 2023January 2025Allow1410YesNo
18512681TRAVEL STOP FOR A TIP CLEARANCE CONTROL SYSTEMNovember 2023March 2025Allow1611NoNo
18504869PROPELLER GROUND STOP MECHANISMNovember 2023August 2024Allow910YesNo
18502135CENTRIFUGAL COMPRESSOR AND TURBOCHARGERNovember 2023August 2024Allow1000YesNo
18500546AIR-TO-AIR HEAT EXCHANGER POTENTIAL IN GAS TURBINE ENGINESNovember 2023April 2024Allow600NoNo
18496524POWER AMPLIFICATION, STORAGE AND REGENERATION SYSTEM AND METHOD USING TIDES, WAVES AND/OR WINDOctober 2023February 2025Allow1610NoNo
18491574ADDITIVELY MANUFACTURED PROTECTIVE COVER FOR GAS TURBINE COMPONENTSOctober 2023July 2025Allow2130YesNo
18480692CMC AIRFOIL WITH CIRCUMVENTING COOLING PASSAGEOctober 2023January 2026Allow2820YesYes
18480192AIRFOIL ASSEMBLY HAVING A COMPOSITE COREOctober 2023October 2025Allow2440YesNo
18285122VANE COMPRISING A STRUCTURE MADE OF COMPOSITE MATERIAL, AND ASSOCIATED MANUFACTURING METHODSeptember 2023July 2024Allow1010YesNo
18552716TURBINE RING ASSEMBLY FOR A TURBOMACHINESeptember 2023November 2024Allow1420YesNo
18471922FAN FOR A LIGHTING DEVICE OF A MOTOR VEHICLESeptember 2023June 2024Allow910NoNo
18549500CONTROL METHOD AND CONTROL DEVICE FOR WIND TURBINESeptember 2023September 2024Allow1220NoNo
18455293TILTED CMC VANE ARC SEGMENTAugust 2023November 2024Allow1430NoNo
18453564COMPOSITE COMPONENT HAVING AN ADDITIVELY PRINTED INNER PORTIONAugust 2023August 2025Allow2321YesNo
18547099SYSTEM FOR CONTROLLING AERAULIC CONDITIONS ABOVE A LANDING OR DECK-LANDING ZONEAugust 2023March 2026Allow3110NoNo
18447980METHOD FOR EFFICIENT PART LOAD COMPRESSOR OPERATIONAugust 2023August 2025Allow2421YesNo
18447831ROTOR BLADE SYSTEM FOR TURBINE ENGINESAugust 2023May 2025Allow2120YesNo
18229967ENGINE TRIM BALANCE SYSTEMAugust 2023June 2024Allow1010NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner SEHN, MICHAEL L.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
23
Examiner Affirmed
16
(69.6%)
Examiner Reversed
7
(30.4%)
Reversal Percentile
47.2%
Lower than average

What This Means

With a 30.4% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is below the USPTO average, indicating that appeals face more challenges here than typical.

Strategic Value of Filing an Appeal

Total Appeal Filings
54
Allowed After Appeal Filing
12
(22.2%)
Not Allowed After Appeal Filing
42
(77.8%)
Filing Benefit Percentile
29.9%
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, 22.2% 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 face challenges. Ensure your case has strong merit before committing to full Board review.

Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner SEHN, MICHAEL L - Prosecution Strategy Guide

Executive Summary

Examiner SEHN, MICHAEL L works in Art Unit 3745 and has examined 553 patent applications in our dataset. With an allowance rate of 79.2%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 37 months.

Allowance Patterns

Examiner SEHN, MICHAEL L's allowance rate of 79.2% places them in the 48% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by SEHN, MICHAEL L receive 2.25 office actions before reaching final disposition. This places the examiner in the 63% 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 SEHN, MICHAEL L is 37 months. This places the examiner in the 34% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +13.8% benefit to allowance rate for applications examined by SEHN, MICHAEL L. This interview benefit is in the 52% 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, 23.7% of applications are subsequently allowed. This success rate is in the 33% percentile among all examiners. Strategic Insight: RCEs show below-average effectiveness with this examiner. Carefully evaluate whether an RCE or continuation is the better strategy.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 39.4% of cases where such amendments are filed. This entry rate is in the 60% 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, 88.9% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 67% 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 59.6% of appeals filed. This is in the 34% percentile among all examiners. Of these withdrawals, 26.5% 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, 30.4% are granted (fully or in part). This grant rate is in the 18% percentile among all examiners. Strategic Note: Petitions are rarely granted regarding this examiner's actions compared to other examiners. Ensure you have a strong procedural basis before filing a petition, as the Technology Center Director typically upholds this examiner's decisions.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 44% 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 2.7% of allowed cases (in the 72% 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.