USPTO Examiner LETTMAN BRYAN MATTHEW - Art Unit 3746

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19286790FLUID ROUTING PLUGJuly 2025January 2026Allow600NoNo
19276301PORTABLE FAN WITH PREDICTABLE BATTERY LIFE AND METHOD FOR PREDICTING BATTERY LIFE THEREOFJuly 2025October 2025Allow300YesNo
19213760FLUID ROUTING PLUGMay 2025September 2025Allow400YesNo
19127834AN AIR PUMP WITH A CHANNEL SWITCH ASSEMBLYMay 2025November 2025Allow600YesNo
19188205FLUID ROUTING PLUGApril 2025June 2025Allow100NoNo
19036483FLUID ROUTING PLUGJanuary 2025July 2025Allow500YesNo
19028278PORTABLE FAN AND FAN ASSEMBLYJanuary 2025June 2025Allow510YesNo
18808325PUMPING CASSETTEAugust 2024September 2025Allow1300NoNo
18784259Adaptive Learning System for Improving Sump Pump ControlJuly 2024April 2025Allow800YesNo
18779480FLUID ROUTING PLUGJuly 2024September 2024Allow200YesNo
18763761FLUID PUMPING SYSTEMS, DEVICES AND METHODSJuly 2024July 2025Allow1210YesNo
18735199VACUUM SYSTEM HAVING CONDENSER AND ROOT VACUUM PUMP SETJune 2024March 2025Allow1000NoNo
18664059DIAPHRAGM PUMPMay 2024November 2025Allow1800YesNo
18637113HYDRAULIC PUMPApril 2024February 2025Allow1001YesNo
18608120HYDRAULIC PISTON PUMP/MOTOR WITH NON-CANTILEVERED PISTONSMarch 2024November 2025Allow2000YesNo
18692682Positive Displacement PumpMarch 2024February 2026Allow2310NoNo
18595052ELECTRIC FAN AND CLEANING APPARATUSMarch 2024May 2025Allow1500YesNo
18686937TRANSMISSIONFebruary 2024October 2025Allow2010NoNo
18435774REVERSING POLARITY OF A PUMP ON FAILURE, AND APPLICATIONS THEREOFFebruary 2024October 2025Allow2120YesNo
18434354FLUID ROUTING PLUGFebruary 2024January 2025Allow1110YesNo
18425804FLEXIBLE IMPELLER PUMPJanuary 2024May 2025Allow1610YesNo
18420163PORTABLE FANJanuary 2024January 2025Allow1230NoNo
18409456Balanced Pump-Axial Piston PumpJanuary 2024July 2025Allow1901YesNo
18575594METHOD FOR HEAT RECOVERY IN A COMPRESSOR AND A COMPRESSORDecember 2023January 2026Allow2510YesNo
18396991FLUID ROUTING PLUGDecember 2023March 2024Allow300NoNo
18394018End Plates and Inner Plate Bushings For PumpsDecember 2023August 2025Allow2021YesNo
18573308MEMBRANE COMPRESSORDecember 2023April 2025Allow1600YesNo
18539436APPARATUS AND METHOD OF OPERATING A GAS PUMPDecember 2023July 2024Allow700YesNo
18539930FLUID PUMP WITH EMBEDDED HEAT DISSIPATING PLATEDecember 2023November 2025Allow2310NoNo
18538373PUMP FLUID END WITH SUCTION VALVE CLOSURE ASSISTDecember 2023November 2024Allow1102YesNo
18528373Method To Smooth Pump Rate While FracturingDecember 2023November 2025Allow2310YesNo
18517151Control plate of a hydraulic machine and hydraulic machineNovember 2023October 2025Allow2320NoNo
18517054VARIABLE DIAMETER VALVE BORES FOR THRU ROD FLUID ENDSNovember 2023June 2025Allow1810NoNo
18514343METHOD FOR CONTROLLING A GEAR PUMPNovember 2023April 2025Allow1701YesNo
18561344Piston Compressor Having Eccentric Lifting ElementNovember 2023June 2025Allow1910YesNo
18511735LONGITUDINAL IMPEDANCE PUMPNovember 2023April 2025Allow1700YesNo
18558008RADIAL PISTON PUMPSOctober 2023November 2025Allow2410YesNo
18492449POWER END ROD ASSEMBLYOctober 2023July 2025Allow2120NoNo
18480955HOT PLUG REDUNDANT PUMP WITH ELECTRONICALLY CONTROLLED VALVEOctober 2023February 2026Allow2810YesNo
18376167SOFT SERVE ICE CREAM PUMP ASSEMBLYOctober 2023March 2025Allow1800YesNo
18470425PUMP DEVICESeptember 2023December 2024Allow1500NoNo
18369009Adaptive Learning System for Improving Sump Pump ControlSeptember 2023April 2024Allow700YesNo
18464715DOWNHOLE SUCKER ROD PUMPSeptember 2023February 2026Allow3011YesNo
18464688Air Compressor Systems for Remote SettingsSeptember 2023May 2025Allow2000NoNo
18464112CENTER ROD PLUNGER WITH CLUTCH ASSEMBLYSeptember 2023August 2025Abandon2311NoNo
18460492PUMPING CASSETTESeptember 2023April 2024Allow700NoNo
18237266FLUID PRESSURE COMPENSATION APPARATUSAugust 2023March 2025Allow1900YesNo
18546510VACUUM PUMP AND VACUUM EXHAUST APPARATUSAugust 2023September 2025Allow2520YesNo
18366432DIAPHRAGM PUMPAugust 2023October 2025Allow2711YesNo
18357076FLUID PUMPING SYSTEMS, DEVICES AND METHODSJuly 2023February 2024Allow700YesNo
18354685ELECTRICAL SUBMERSIBLE MOTOR PROTECTING SYSTEM AND METHOD WITH CHEMICAL CHAMBERJuly 2023August 2025Allow2521YesNo
18218881APPARATUS AND METHOD OF OPERATING A GAS PUMPJuly 2023September 2023Allow300YesNo
18346798FULL-PLASTIC LIQUID PUMPJuly 2023October 2024Allow1600YesNo
18341070FLUID ROUTING PLUGJune 2023August 2023Allow200YesNo
18213693Hybrid Drive and Distributed Power Systems for Well Stimulation OperationsJune 2023November 2025Allow2931YesNo
18338735SYSTEM OF GAS COMPRESSION UTILIZING VARIABLE INPUT PRESSURES TO PRODUCE A CONSISTENT OUTPUT PRESSUREJune 2023February 2024Allow810YesNo
18338354SYSTEM FOR SUPPLYING CHEMICAL SOLUTIONJune 2023July 2024Allow1310YesNo
18258107ELECTRONIC RAM PUMP CONTROLLERJune 2023March 2026Abandon3300YesNo
18211111NECK FANJune 2023October 2025Allow2801YesNo
18202675PRESSURE CONTROLLED PUMP SYSTEMSMay 2023May 2025Allow2410YesNo
18038720FREQUENCY-ADJUSTABLE WATER DRIPPING DEVICEMay 2023September 2024Allow1600YesNo
18200775UNIFIED AIR COMPRESSORMay 2023September 2024Allow1600YesNo
18037453Vortex ChamberMay 2023October 2025Allow2900NoNo
18315877FLEXIBLE IMPELLER PUMP FOR FLOWABLE FOOD PRODUCTMay 2023March 2025Allow2240YesNo
18034323AN APPARATUS FOR CURING A LINERApril 2023September 2025Allow2900YesNo
18032256BIMETALLIC PRODUCTION TUBINGApril 2023March 2026Abandon3510NoNo
18249146SERVO ARRANGEMENTApril 2023February 2025Abandon2210NoNo
18297098METHODS FOR MEASURING FLUID FLOW OF FLUID SUPPLY ASSEMBLYApril 2023March 2025Allow2311YesNo
18030008TUBEApril 2023March 2026Abandon3510NoNo
18128531ELECTRONIC POSITIVE DISPLACEMENT FLUID PUMP WITH PUMPING RING ALIGNMENTMarch 2023July 2025Abandon2820NoNo
18191720GELS FOR PIPELINE CORROSION MITIGATIONMarch 2023February 2026Abandon3401NoNo
18178963DISPOSABLE PUMP CHAMBER FOR AN INFUSION PUMPMarch 2023January 2026Abandon3420NoYes
18042501GUIDE DEVICE, COOLANT DUCT AND DIFFUSION VACUUM PUMPFebruary 2023October 2024Abandon1910NoNo
18168041FLUID ROUTING PLUGFebruary 2023October 2023Allow810YesNo
18168108HYDRAULIC PUMP WITH SWASH PLATE TILT CONTROLFebruary 2023October 2025Allow3260YesNo
18040916LIQUID BLADE PUMPFebruary 2023July 2024Abandon1810NoNo
18040728LIQUID BLADE PUMPFebruary 2023July 2024Abandon1810NoNo
18040046COOLING FAN ASSEMBLY WITH WATER FORDING FEATURESJanuary 2023January 2025Allow2410YesNo
18161906VACUUM SYSTEM HAVING CONDENSER AND ROOT VACUUM PUMP SETJanuary 2023January 2025Abandon2410NoNo
18007011MODIFIED JET PUMP INCORPORATING A SUPPORT FOR MPLT LOGGING AT THE BOTTOM OF AN OIL WELLJanuary 2023July 2024Allow1700YesNo
18101326SACRIFICIAL ANODE ASSEMBLY FOR A SEAL SECTION OF AN ELECTRIC SUBMERSIBLE PUMP (ESP) ASSEMBLYJanuary 2023September 2024Allow2001YesNo
18015471Nozzle Appliance for a Jet Pump and Jet PumpJanuary 2023December 2024Abandon2320NoNo
18014859ELECTROCHEMICAL ACTUATORS AND ACTUATOR ARRAYSJanuary 2023January 2025Allow2410NoNo
18013495LINEAR COMPRESSORDecember 2022March 2025Allow2610NoNo
18086867METHOD FOR OPERATING AN ELECTRONICALLY CONTROLLED PUMP ASSEMBLYDecember 2022November 2023Allow1110YesNo
18068141Reciprocating Piston Pump for Conveying a MediumDecember 2022May 2025Allow2820YesNo
18000991CROSSHEAD BUSHING SYSTEMS AND METHODSDecember 2022April 2024Allow1600YesNo
17967281TORSION PUMP AND CHEMICAL LIQUID SUPPLY UNITOctober 2022June 2025Allow3210YesNo
17914661ELECTRICALLY OPERATED LINEAR PUMP AND PUMP DRIVESeptember 2022October 2025Allow3710YesNo
17929794WATER-RING VACUUM PUMP INCLUDING BUILT-IN HOGGING FLOW PATHSeptember 2022June 2023Allow900YesNo
17938910Multi-pump integrated mixed fluid delivery deviceSeptember 2022May 2025Allow3200YesNo
17822467FLUID PUMPAugust 2022November 2024Abandon2711NoNo
17802226PUMP WITH SUCTION CHAMBER IMPACT BODYAugust 2022March 2025Allow3100YesNo
17800986COMPRESSION APPARATUS AND FILLING STATION COMPRISING SUCH AN APPARATUSAugust 2022May 2024Allow2110YesNo
17800992COMPRESSION APPARATUS AND FILLING STATION COMPRISING SUCH AN APPARATUSAugust 2022January 2025Abandon2920NoNo
17884736FLUID ROUTING PLUGAugust 2022February 2023Allow610YesNo
17881812Exercise Machine Retrofit with the Capacity to Pump FluidAugust 2022December 2024Abandon2811NoNo
17817357Pump operated by hand or pressurized airAugust 2022August 2023Allow1200NoNo
17879513VALVE ARRANGEMENTAugust 2022May 2024Allow2201YesNo
17816267PUMP FOR ARTICLE OF FOOTWEAR OR APPARELJuly 2022August 2024Allow2520YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner LETTMAN, BRYAN MATTHEW.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
31
Examiner Affirmed
18
(58.1%)
Examiner Reversed
13
(41.9%)
Reversal Percentile
64.6%
Higher than average

What This Means

With a 41.9% 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
77
Allowed After Appeal Filing
25
(32.5%)
Not Allowed After Appeal Filing
52
(67.5%)
Filing Benefit Percentile
50.0%
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, 32.5% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting 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 is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Examiner LETTMAN, BRYAN MATTHEW - Prosecution Strategy Guide

Executive Summary

Examiner LETTMAN, BRYAN MATTHEW works in Art Unit 3746 and has examined 1,001 patent applications in our dataset. With an allowance rate of 68.0%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 35 months.

Allowance Patterns

Examiner LETTMAN, BRYAN MATTHEW's allowance rate of 68.0% places them in the 30% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by LETTMAN, BRYAN MATTHEW receive 2.08 office actions before reaching final disposition. This places the examiner in the 55% 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 LETTMAN, BRYAN MATTHEW is 35 months. This places the examiner in the 41% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +53.6% benefit to allowance rate for applications examined by LETTMAN, BRYAN MATTHEW. This interview benefit is in the 95% 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, 24.7% of applications are subsequently allowed. This success rate is in the 37% 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 22.1% of cases where such amendments are filed. This entry rate is in the 28% 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, 68.8% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 58% 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 59.2% of appeals filed. This is in the 34% percentile among all examiners. Of these withdrawals, 35.6% 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, 57.0% are granted (fully or in part). This grant rate is in the 59% 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 3.2% of allowed cases (in the 80% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 1.5% of allowed cases (in the 65% 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.
  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

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.