USPTO Examiner LEGENDRE CHRISTOPHER RYAN - Art Unit 3745

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18835233HYBRID METAL/COMPOSITE BLADE WITH TEXTILE ORIENTATION ADAPTED TO MECHANICAL STRESSESAugust 2024February 2025Allow600YesNo
18770667PULSATING PNEUMATIC MOTORJuly 2024June 2025Allow1200YesNo
18715101A Multi-Phase Rotor, System and Method for Maintaining a Stable Vapour CavityMay 2024April 2025Allow1000YesNo
18670178TURBINE POWERED BY EXHAUST FANMay 2024November 2024Allow610NoNo
18641130FLUID CONNECTION FOR A HYDROMOTIVE MACHINEApril 2024April 2025Allow1111NoNo
18630833SYSTEMS AND METHODS FOR FLUID FLOW BASED RENEWABLE ENERGY GENERATIONApril 2024March 2025Allow1210YesNo
18628949SYSTEM AND METHOD FOR DETECTING AND RESPONDING TO FAILURES IN A DRIVETRAIN OF A WIND TURBINEApril 2024January 2025Allow900YesNo
18605083FLOW CONVERSION TURBINES AND ASSEMBLIESMarch 2024August 2024Allow510YesNo
18600896FAN STRUCTUREMarch 2024September 2024Allow610YesNo
18600600SEGMENTED VARIABLE FAN OUTLET GUIDE VANE WITH CAM ASSEMBLY AND UNIQUE ACTUATION MECHANISMSMarch 2024January 2025Allow1000YesNo
18596896APPORTIONED SEGMENTS FOR A DUCTED TURBINEMarch 2024March 2025Abandon1310NoNo
18589832AIRCRAFT ENGINE ROTOR ASSEMBLY WITH GYROSCOPIC STIFFENERFebruary 2024January 2025Allow1000YesNo
18432130ROTOR AND AIRCRAFTFebruary 2024November 2024Allow910NoNo
18428452ROTOR FOR RADIAL TURBINEJanuary 2024September 2024Allow710YesNo
18580844HYDROELECTRIC TURBINEJanuary 2024April 2025Allow1500YesNo
18575913CONTROL METHOD AND APPARATUS FOR WIND TURBINE GENERATOR SET, AND DEVICEJanuary 2024May 2025Allow1600NoNo
18390777Biased Passages For TurbomachineryDecember 2023September 2024Allow901YesNo
18568186DETERMINING TOWER TOP ACCELERATION OF A WIND TURBINEDecember 2023May 2025Allow1710YesNo
18528729LOCATING PLATE FOR USE WITH TURBINE SHROUD ASSEMBLIESDecember 2023March 2025Allow1510YesNo
18565695Centrifugal Slurry Pump Impeller Shroud With LipNovember 2023November 2024Allow1110YesNo
18512672ADJUSTABLE POSITION IMPELLER SHROUD FOR CENTRIFUGAL COMPRESSORSNovember 2023March 2025Allow1610NoNo
18290337NACELLE FOR A WIND TURBINENovember 2023September 2024Allow1020NoNo
18559402FLUID TURBINE ASSEMBLY AND METHOD OF ACTUATION OF A FLUID TURBINENovember 2023May 2025Allow1820YesNo
18289434WIND TURBINE BLADE HAVING A DE-ICING SYSTEMNovember 2023March 2025Allow1611YesNo
18557872DETERMINING WIND TURBINE ROTOR SPEEDOctober 2023March 2025Allow1610YesNo
18476683BLADE AND ROTORSeptember 2023May 2025Allow2010YesNo
18283960SUPPLYING A MIXTURE OF AIR AND EXHAUST GAS TO A COMPRESSOR WHEEL OF A COMPRESSORSeptember 2023January 2025Allow1610YesNo
18456126ROTOR ASSEMBLY FOR GAS TURBINE ENGINESAugust 2023January 2025Allow1610NoNo
18278632AIR AMPLIFIERAugust 2023January 2025Allow1620YesNo
18366800FAN ASSEMBLY FOR AN ENGINE HAVING REDUNDANT TRUNNION RETENTIONAugust 2023December 2024Allow1601YesNo
18362346GAS TURBINE ENGINE HAVING A SENSOR ASSEMBLY TO DETECT TORSIONAL VIBRATIONJuly 2023January 2025Allow1701YesNo
18263433CONTROLLING WIND TURBINE BASED ON WIND VEERJuly 2023January 2025Allow1810YesNo
18267465POWER CONVERTER HAVING BOOSTING MECHANISM WITH MULTI-SHAFT VERTICALLY STEPPED TURBINEJune 2023January 2024Allow710YesNo
18207003SYSTEMS AND METHODS FOR INTERLEAVED SYNCHRONOUS PROPELLER SYSTEMJune 2023July 2024Allow1320YesNo
18328177AIRFOIL WITH SANDWICH COMPOSITEJune 2023February 2024Allow801NoNo
18203821STATOR VANE RING AND ROTARY MACHINEMay 2023April 2024Allow1001YesNo
18323551ROTARY COMPRESSOR AND HOME APPLIANCE INCLUDING THE SAMEMay 2023March 2024Allow1000YesNo
18252957BLADE MADE OF COMPOSITE MATERIAL WITH AT LEAST PARTIALLY CERAMIC MATRIXMay 2023April 2025Allow2320YesNo
18195592SHAFTLESS GENERATOR FOR A FLUID TURBINEMay 2023September 2023Allow410YesNo
18035326FANMay 2023April 2024Allow1200YesNo
18249269TURBOMOLECULAR VACUUM PUMP AND METHOD FOR MANUFACTURING A ROTORApril 2023January 2025Abandon2210NoNo
18134922HURRICANE VERTICAL-AXIS WIND TURBINESApril 2023March 2024Allow1110YesNo
18295127VERTICAL AXIS WIND TURBINE WITH BRACING MEMBERSApril 2023April 2024Allow1310NoNo
18186491NEGATIVE POISSON'S RATIO MATERIALS FOR PROPELLERS AND TURBINESMarch 2023January 2024Allow1010YesNo
18025829AXIAL FLOW FANMarch 2023March 2025Abandon2420NoNo
18178897ROTOR BLADE WEIGHT SYSTEMMarch 2023June 2024Allow1520YesNo
18117378DEVICE WITH CONTROLLABLE PITCH PROPELLER FOR OUTBOARD MOTORSMarch 2023January 2025Abandon2210NoNo
18006147GUIDE VANE ASSEMBLY FOR A TURBOMACHINE, COMPRESSOR MODULE, TURBOMACHINE, AND METHOD FOR PRODUCING A GUIDE VANE ASSEMBLYJanuary 2023July 2024Abandon1810NoNo
18095811INDUCED FLOW GENERATOR APPARATUS FOR POWER GENERATIONJanuary 2023September 2024Allow2001YesNo
18085841ROTARY MANIFOLD FOR A COHESION-TYPE DRIVEDecember 2022March 2024Allow1510NoNo
18010771WIND TURBINE BLADE CONTROL FOR A DEGRADATION STATE OF THE BLADEDecember 2022April 2024Allow1600YesNo
18009772Non-Clogging PumpDecember 2022July 2024Allow1920YesNo
17987056FUEL CELL FLUID MACHINENovember 2022April 2025Allow2900YesNo
17979393THERMAL MANAGEMENT SYSTEM FOR GAS TURBINE ENGINENovember 2022December 2023Allow1310YesNo
17997268PLATFORM FOR A FAN ROTOR OF AN AIRCRAFT TURBOMACHINEOctober 2022June 2023Allow800YesNo
17946755COMPACT VERTICAL AXIS TURBINESeptember 2022September 2023Abandon1210NoNo
17906357STRUT COVER FOR A TURBINESeptember 2022May 2023Allow810NoNo
17929823AIRCRAFT PROPELLER BLADE RADIATORSeptember 2022February 2024Allow1810NoNo
17908037COMPOSITE PLATFORM FOR A FAN OF AN AIRCRAFT TURBINE ENGINEAugust 2022November 2023Allow1510YesNo
17802877VARIABLE GEOMETRY TURBINEAugust 2022April 2024Allow2020NoNo
17820730METHOD OF REDUCING TURBINE WHEEL HIGH CYCLE FATIGUE IN SECTOR-DIVIDED DUAL VOLUTE TURBOCHARGERSAugust 2022January 2024Allow1710YesNo
17890162RIM DRIVEN THRUSTER WITH ADJUSTABLE ROTOR BLADE PITCHAugust 2022October 2023Allow1410NoNo
17800015DETERMINING A FREQUENCY OF AN OSCILLATING MOVEMENT OF A WIND TURBINE TOWERAugust 2022August 2024Allow2420YesNo
17880074Balanced Circumferential SealAugust 2022July 2023Allow1120YesNo
17877093FUSED ROTORJuly 2022October 2023Allow1421YesNo
17872665NEGATIVE POISSON'S RATIO MATERIALS FOR PROPELLERS AND TURBINESJuly 2022February 2023Allow610YesNo
17867927Debris Exclusion Seal Guard for a PumpJuly 2022March 2023Allow810YesNo
17861931VARIABLE VANE AND METHOD FOR OPERATING SAMEJuly 2022August 2023Allow1320NoNo
17860028METHOD FOR IDENTIFYING AN EXTREME LOAD ON A WIND POWER INSTALLATIONJuly 2022August 2024Allow2510YesNo
17791331OUTFLOW REGION OF A COMPRESSOR, COMPRESSOR HAVING AN OUTFLOW REGION OF SAID TYPE, AND TURBOCHARGER HAVING THE COMPRESSORJuly 2022September 2023Allow1400YesNo
17856155AZIMUTH SENSORS IN WIND TURBINESJuly 2022August 2023Allow1411YesNo
17841431SYSTEMS AND METHODS FOR FLUID FLOW BASED RENEWABLE ENERGY GENERATIONJune 2022January 2024Allow1920YesNo
17830509VERTICAL AXIS WIND TURBINE AND BLADE THEREFORJune 2022September 2023Allow1630YesNo
17781286TURBINE ROTOR WHEEL FOR AN AIRCRAFT TURBOMACHINEMay 2022June 2023Allow1300NoNo
17779114STOPPING A WIND TURBINE ROTOR USING PRE-SET PITCH RATESMay 2022November 2023Allow1800YesNo
17779112STOPPING A WIND TURBINE ROTOR BASED ON STORED PITCH ANGLE SIGNALMay 2022November 2023Allow1700YesNo
17735885METHOD FOR OPERATING A WIND POWER INSTALLATION, WIND POWER INSTALLATION AND WIND FARMMay 2022October 2024Abandon3021NoNo
17661148VARIABLE GUIDE VANE CONTROL SYSTEMApril 2022January 2023Allow810NoNo
17725568AIRCRAFT PROPELLER AND AIRCRAFTApril 2022February 2023Allow910YesNo
17658608PRODUCING POWER WITH TURBOEXPANDER GENERATORS BASED ON SPECIFIED OUTPUT CONDITIONSApril 2022March 2024Abandon2310NoNo
17711332ENERGY RECOVERY SYSTEM TO BE USED IN NATURAL GAS PIPELINESApril 2022April 2024Allow2420YesNo
17708252SYSTEMS AND METHODS FOR INTERLEAVED SYNCHRONOUS PROPELLER SYSTEMMarch 2022September 2023Abandon1811NoNo
17705628ROTATING SLEEVE CONTROLLING CLEARANCE OF SEAL ASSEMBLY OF GAS TURBINE ENGINEMarch 2022April 2025Allow3720NoYes
17655748METHOD FOR MANUFACTURING A TURBINE ENGINE PART AND THE THEREBY PRODUCED PARTMarch 2022April 2023Allow1210YesNo
17696995FLAPPING HINGE FOR A FAN BLADEMarch 2022March 2023Allow1210YesNo
17641850AIR COMPRESSOR FOR VEHICLEMarch 2022January 2024Allow2210YesNo
17677103FAN BLADE DEVICEFebruary 2022November 2022Allow800NoNo
17671987WIND TURBINE WITH A FLOW DEFLECTION UNITFebruary 2022October 2023Abandon2000NoNo
17633944IMPULSE TURBINE AND TURBINE DEVICEFebruary 2022June 2023Allow1610NoNo
17630986WIND POWER GENERATION APPARATUS AND METHOD FOR STOPPING THE SAMEJanuary 2022June 2024Abandon2911NoNo
17579389METHOD FOR CONTROLLING A WIND POWER INSTALLATIONJanuary 2022December 2023Allow2310YesNo
17647561ROTATING AIRFOIL ASSEMBLY WITH OPENING FORMED THEREIN TO EJECT OR TO DRAW AIRJanuary 2022August 2023Allow1920YesNo
17560544METHOD AND SYSTEM FOR INTEGRATED PITCH CONTROL MECHANISM ACTUATOR HYDRAULIC FLUID TRANSFERDecember 2021January 2024Allow2521YesNo
17619662TURBINE ALIGNMENT BY USE OF LIGHT POLARISING COMPASSDecember 2021April 2024Abandon2810NoNo
17619270FLOW TURBINE ROTOR WITH TWISTED BLADESDecember 2021January 2024Allow2520NoNo
17615095FEEDFORWARD CONTROL METHOD, APPARATUS AND CONTROL SYSTEM FOR WIND TURBINENovember 2021July 2024Allow3120YesNo
17454332CENTRIFUGAL BLOWERNovember 2021January 2024Abandon2610YesNo
17606672ROTOR FOR A WIND TURBINE AND WIND TURBINEOctober 2021October 2024Allow3630YesNo
17482666LOW PRESSURE RATIO FAN ENGINE HAVING A DIMENSIONAL RELATIONSHIP BETWEEN INLET AND FAN SIZESeptember 2021July 2023Allow2120YesNo
17437569ROTOR BEARING OF A WIND TURBINESeptember 2021August 2023Allow2310YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner LEGENDRE, CHRISTOPHER RYAN.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
30
Examiner Affirmed
20
(66.7%)
Examiner Reversed
10
(33.3%)
Reversal Percentile
54.3%
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
50
Allowed After Appeal Filing
14
(28.0%)
Not Allowed After Appeal Filing
36
(72.0%)
Filing Benefit Percentile
38.3%
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, 28.0% 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 LEGENDRE, CHRISTOPHER RYAN - Prosecution Strategy Guide

Executive Summary

Examiner LEGENDRE, CHRISTOPHER RYAN works in Art Unit 3745 and has examined 827 patent applications in our dataset. With an allowance rate of 76.3%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 37 months.

Allowance Patterns

Examiner LEGENDRE, CHRISTOPHER RYAN's allowance rate of 76.3% places them in the 34% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by LEGENDRE, CHRISTOPHER RYAN receive 1.97 office actions before reaching final disposition. This places the examiner in the 64% 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 LEGENDRE, CHRISTOPHER RYAN is 37 months. This places the examiner in the 15% percentile for prosecution speed. Applications take longer to reach final disposition with this examiner compared to most others.

Interview Effectiveness

Conducting an examiner interview provides a +26.6% benefit to allowance rate for applications examined by LEGENDRE, CHRISTOPHER RYAN. This interview benefit is in the 77% percentile among all examiners. Recommendation: Interviews are highly effective with this examiner and should be strongly considered as a prosecution strategy. Per MPEP § 713.10, interviews are available at any time before the Notice of Allowance is mailed or jurisdiction transfers to the PTAB.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 22.5% of applications are subsequently allowed. This success rate is in the 20% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 47.1% of cases where such amendments are filed. This entry rate is in the 66% 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, 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 42.3% of appeals filed. This is in the 6% percentile among all examiners. Of these withdrawals, 22.7% 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, 46.3% are granted (fully or in part). This grant rate is in the 53% 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 0.7% of allowed cases (in the 64% 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 3.2% 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:

  • Prioritize examiner interviews: Interviews are highly effective with this examiner. Request an interview after the first office action to clarify issues and potentially expedite allowance.
  • Plan for extended prosecution: Applications take longer than average with this examiner. Factor this into your continuation strategy and client communications.

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.