USPTO Examiner CARROLL DAVID P - Art Unit 3674

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18875699ROTATION ANGLE CONTROL AND BRAKING DEVICE FOR POWER HEAD OF DIRECTIONAL DRILLJuly 2025November 2025Allow1100NoNo
19136872MILLING AND DEBRIS COLLECTING WITH MULTIPHASE VACUUM PUMPJune 2025February 2026Allow810YesNo
19226414Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsJune 2025October 2025Allow410YesNo
19216811DRILLING METHOD FOR STORAGE WELL FOR LIQUID-GAS TWO-PHASE COMBINED GEOLOGICAL STORAGEMay 2025October 2025Allow510NoNo
19214222COOLING OF ELECTROCRUSHING DRILL ASSEMBLYMay 2025February 2026Allow810YesNo
19189515Downhole Pump Top Plunger Adapter with Improved Sand Handling CapabilityApril 2025October 2025Allow600NoNo
19117651PRESSURE RESPONSE TEST TO DETECT LEAKAGE OF ROTATING CONTROL DEVICEApril 2025December 2025Allow800NoNo
19094520Electro-Hydraulic Tubing PunchMarch 2025November 2025Abandon810NoNo
19081112BACK PRESSURE VALVE FOR CARBON CAPTURE SYSTEMSMarch 2025March 2026Allow1210NoNo
19062552DOWNHOLE CENTRALIZER TOOLFebruary 2025January 2026Allow1110YesNo
19046255PILOTING PULSED POWER DRILLING USING A MULTI-ACTUATOR BASED FLOATING ELECTRODEFebruary 2025January 2026Allow1110YesNo
19034696ADVANCING A TUBULAR STRING IN A WELLBOREJanuary 2025October 2025Allow920YesNo
19009114WIRELINE TOOLS WITH TOOL BRAKE ASSEMBLIESJanuary 2025December 2025Allow1100NoNo
19005428GARTER SPRING ASSEMBLY FOR SEALING DEVICES IN WELL SYSTEMSDecember 2024November 2025Allow1110NoNo
18990073FAIRINGS FOR MOBILE DOWNHOLE TOOLS IN PRODUCING WELLSDecember 2024October 2025Allow1010NoNo
18961299MULTIPURPOSE CONVEYOR SYSTEMNovember 2024May 2025Allow610NoNo
18907044CONNECTOR ASSEMBLY WITH TANDEM-ACTING LOCKING ASSEMBLIESOctober 2024October 2025Allow1210NoNo
18886519PARTIALLY BONDED SEALS FOR WELL SYSTEMSSeptember 2024October 2025Allow1310YesNo
18819912DOWNHOLE CLEANING TOOL AND METHODAugust 2024September 2025Allow1210YesNo
18818873Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsAugust 2024March 2025Allow610YesNo
18842114METHOD OF CREATING A PLURALITY OF LONGITUDINALLY SEPARATED CIRCUMFERENTIAL DENTS IN A WELLBORE TUBULARAugust 2024October 2025Allow1410NoNo
18816470DIRECTIONAL DRILLING TARGET STEERING APPARATUS AND METHODAugust 2024October 2025Allow1410NoNo
18804291Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsAugust 2024March 2025Allow710YesNo
18796416BOTTOM HOLE ASSEMBLY HAVING THREE-POINT CONTACT FOR IMPROVED STEERINGAugust 2024January 2025Allow510YesNo
18787292SEAL ARRANGEMENT FOR A LINER HANGER, METHOD, AND SYSTEMJuly 2024August 2025Allow1310YesNo
18786138WELLBORE BEAM SPRING TRAVEL LIMITERJuly 2024January 2026Allow1810YesNo
18785640DOWN-THE-HOLE HAMMER HAVING AN INVERTED CASINGJuly 2024September 2025Allow1410YesNo
18784380MEASURING WELLBORE FLUID CHARACTERISTICS IN A WELLBOREJuly 2024September 2025Allow1310NoNo
18778355CHAMFERED SINKER BAR CONNECTIONJuly 2024June 2025Allow1110YesNo
18775655METHODS AND APPARATUS TO DECOUPLE DOWNHOLE TOOL SPEED FROM CONVEYANCE TOOLSJuly 2024May 2025Allow1010NoNo
18769886CONTROLLING LOGGING TOOL ORIENTATION IN A WELLBOREJuly 2024October 2025Allow1510YesNo
18768166SYSTEMS AND METHODS FOR PRODUCING A MULTIPHASE FORMATION FLUID UTILIZING ELECTRIC SUBMERSIBLE PUMPSJuly 2024March 2025Allow800YesNo
18763084Rod section of a ground drilling rod, drive element, rod section system, and ground drilling deviceJuly 2024August 2025Abandon1310NoNo
18725199ROTARY TOOL HYDRAULIC POWER SYSTEMJune 2024August 2025Allow1310YesNo
18756391Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsJune 2024January 2025Allow610YesNo
18750652Displaceable Shoe Track AssemblyJune 2024January 2025Allow700NoNo
18720970MULTIPLE EXPANDABLE METAL PACKERS WITH HYDROLOCK PREVENTIONJune 2024May 2025Allow1110YesNo
18718716SNAP LATCH OR COLLET PROFILEJune 2024October 2024Allow400NoNo
18738494BACK PRESSURE VALVE RECOVERY TOOL AND METHODS OF USEJune 2024October 2025Allow1610YesNo
18733928CEMENT PLUG AND METHODS OF USEJune 2024October 2025Allow1610NoNo
18732816Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsJune 2024November 2024Allow510YesNo
18714495PACKER ASSEMBLY WITH AN ANTI-EXTRUSION ASSEMBLYMay 2024May 2025Allow1110YesNo
18671864ELECTRICAL SUBMERSIBLE PUMP CONCENTRIC TUBING COMPLETIONMay 2024July 2025Allow1410NoNo
18661584Hydraulic Powerhouse System For An Oil Well Pumping UnitMay 2024November 2025Allow1810YesNo
18658757Systems and Methods for Rigidizing a SealMay 2024December 2025Allow1910YesNo
18657313SAND SCREEN, METHOD, AND SYSTEMMay 2024October 2025Allow1710YesNo
18652584High Pressure Resistant and Partial Discharge Reduced MLEMay 2024April 2025Allow1220YesNo
18650597Coiled Tubing Section MillApril 2024April 2025Allow1210NoNo
18644250Method of Controlling Tensile-Splitting and Hydro-Shearing Parameters During Completion of Enhanced Geothermal System WellsApril 2024September 2024Allow510YesNo
18640915SELF INDEXING MULE SHOE MECHANISMApril 2024April 2025Allow1210NoNo
18640344SELECTIVE WELL BARRIER BOTTOM, SYSTEM, AND METHODApril 2024September 2025Allow1610NoNo
18635841SELECTABLE HOLE TRIMMER AND METHODS THEREOFApril 2024August 2025Allow1610NoNo
18700191DOWNHOLE TOOL AND METHOD FOR PERFORATING A DOWNHOLE TUBULARApril 2024January 2025Allow900YesNo
18623688Jam release device, system, model and design method for coiled tube drilling rigsApril 2024December 2025Abandon2011NoNo
18618270CLEAN UP AND ACTUATION TOOL, METHOD, AND SYSTEMMarch 2024May 2025Allow1310YesNo
18617572CONNECTION ASSEMBLY AND METHOD TO ASSEMBLE SUCKER RODMarch 2024June 2025Allow1410NoNo
18607513SYSTEMS AND METHODS TO EFFICIENTLY COOL DRILLING MUDMarch 2024July 2025Allow1610NoNo
18603983EXPLOSIVE DOWNHOLE TOOLS HAVING IMPROVED WELLBORE CONVEYANCE AND DEBRIS PROPERTIES, METHODS OF USING THE EXPLOSIVE DOWNHOLE TOOLS IN A WELLBORE, AND EXPLOSIVE UNITS FOR EXPLOSIVE COLUMN TOOLSMarch 2024April 2025Allow1310NoNo
18600713DOWNHOLE PERFORATING TOOL WITH PROPELLANT CHARGE AND METHOD OF USING SAMEMarch 2024June 2025Allow1610YesNo
18593500CEMENT HEAD FLOW DIVERTER FOR TETHERED CEMENT PLUG DEPLOYMENTMarch 2024September 2025Allow1910NoNo
18589161GAS-ACTIVATED VENT VALVE BELOW PACKER FOR STABLE ELECTRICAL SUBMERSIBLE PUMP (ESP) OPERATION IN GASSY WELLSFebruary 2024April 2025Allow1400NoNo
18581202DOWNHOLE FLUID SEPARATOR IN A MULTILATERAL WELLFebruary 2024February 2025Allow1210YesNo
18683652DUAL TUBE DRILL STRING COMPONENTSFebruary 2024April 2025Allow1410NoNo
18425479SLEEVE ASSEMBLIES FOR COILED TUBINGJanuary 2024April 2025Allow1400NoNo
18414046DETECTING RINGOUT ON AN EXPANDABLE TOOLJanuary 2024July 2025Allow1810NoNo
18405349ADJUSTABLE REAMERJanuary 2024August 2024Allow810NoNo
18392261TUBING PRESSURE INSENSITIVE SAFETY VALVE WITH HYDROSTATIC COMPENSATIONDecember 2023May 2025Allow1710NoNo
18542149Resettable Element Back-Up SystemDecember 2023March 2025Allow1520NoNo
18531302LUBRICATOR ASSEMBLY WITH FLANGE OR FLOW BLOCK MOUNTED CATCHERDecember 2023May 2025Allow1710NoNo
18566815SYSTEM AND METHOD FOR POSITION AND ORIENTATION DETECTION OF A DOWNHOLE DEVICEDecember 2023December 2024Allow1210NoNo
18520011NON-ROTATING MECHANICALLY ENHANCED AND PASSIVELY PRELOADED CONNECTION FOR OILFIELD EQUIPMENTNovember 2023October 2025Allow2310NoNo
18511370STEERING DEVICE, METHOD AND SYSTEMNovember 2023June 2025Allow1920NoNo
18560613COMPOSITE CABLE ROPE SOCKETNovember 2023March 2025Allow1610YesNo
18502794Increasing Hydrocarbon Recovery in a Multipurpose WellNovember 2023August 2025Allow2110NoNo
18485216DRILLING RETURN FLOWLINE CONTINUOUS AGITATION FLOCCULANT METERING DISPENSEROctober 2023August 2025Abandon2210NoNo
18377333CEMENT PLUG AND METHODS OF USEOctober 2023August 2024Allow1110NoNo
18554165IMPACT DEVICE FOR A DRILL STRINGOctober 2023March 2025Allow1810NoNo
18375819Downhole Sand SeparatorOctober 2023November 2023Allow100NoNo
18553470CONTRACTION JOINT FOR INTELLIGENT COMPLETION AND DOWNHOLE COMPLETION SYSTEMSeptember 2023January 2025Allow1600NoNo
18477827Coiled Tubing Section MillSeptember 2023January 2024Allow410NoNo
18476241AUTONOMOUS ULTRAVIOLET LIGHT AND BRUSH APPARATUS FOR REMEDIATION AND PREVENTION OF BIOLOGICAL AND CHEMICAL FOULING IN WELLSSeptember 2023April 2025Allow1810NoNo
18475670SYSTEM AND METHOD FOR REHABILITATING A WATER WELL WITH COMPRESSED NITROGENSeptember 2023June 2025Allow2020YesNo
18473545INFLOW CONTROL DEVICESeptember 2023September 2025Allow2410NoNo
18371908EXPLOSIVE DOWNHOLE TOOLS HAVING IMPROVED WELLBORE CONVEYANCE AND DEBRIS PROPERTIES, METHODS OF USING THE EXPLOSIVE DOWNHOLE TOOLS IN A WELLBORE, AND EXPLOSIVE UNITS FOR EXPLOSIVE COLUMN TOOLSSeptember 2023September 2025Allow2440NoNo
18468822FIBER OPTIC WETMATESeptember 2023April 2024Allow700YesNo
18367413Milling Rod Guides and MethodsSeptember 2023December 2024Allow1510NoNo
18460925FLUID FLOW CONTROL SYSTEM EMPLOYING A FLUIDIC DIODE FOR CONTROL PRESSURESeptember 2023August 2025Allow2310NoNo
18239199TIGHT TOLERANCE PACKERAugust 2023November 2024Allow1510NoNo
18239254TIGHT TOLERANCE PACKERAugust 2023November 2024Allow1410NoNo
18278420PERCUSSION DRILLING APPARATUS AND TORQUE TRANSFER METHODAugust 2023April 2025Abandon2010NoNo
18452641TOOL STRING TRANSPORTATION DEVICEAugust 2023January 2024Allow410YesNo
18449782TWO-STAGE TORQUE RELEASE SUBAugust 2023March 2025Allow1910NoNo
18446685Extreme Temperature Retrievable Isolation Packer SystemAugust 2023March 2025Abandon1910NoNo
18366784CASING SHOE WITH FLOW OPERATED DIVERTER VALVEAugust 2023August 2024Allow1310NoNo
18224521DOWN-HOLE CHEMICAL HEATER AND METHODS OF OPERATING SUCHJuly 2023February 2025Allow1920NoNo
18353662PRESSURE MODULATING MULTI-DIAMETER THRUST CUP ARRANGEMENT AND POSITIONING SYSTEMJuly 2023January 2025Allow1810NoNo
18219024SYSTEMS AND METHODS TO EFFICIENTLY COOL DRILLING MUDJuly 2023January 2024Allow610NoNo
18209496INNER TUBE ASSEMBLY OF DRILL TOOL AND ROPE CORING DRILL TOOL THEREOFJune 2023October 2024Allow1620NoNo
18332053Rotating Gin PoleJune 2023April 2025Allow2210NoNo
18201807Bottom Tubing Cap for Downhole Pump SystemsMay 2023November 2024Allow1810NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner CARROLL, DAVID P..

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
4
Examiner Affirmed
3
(75.0%)
Examiner Reversed
1
(25.0%)
Reversal Percentile
41.3%
Lower than average

What This Means

With a 25.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority 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
7
Allowed After Appeal Filing
3
(42.9%)
Not Allowed After Appeal Filing
4
(57.1%)
Filing Benefit Percentile
71.4%
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, 42.9% 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 face challenges. Ensure your case has strong merit before committing to full Board review.

Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Examiner CARROLL, DAVID P. - Prosecution Strategy Guide

Executive Summary

Examiner CARROLL, DAVID P. works in Art Unit 3674 and has examined 421 patent applications in our dataset. With an allowance rate of 81.2%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 24 months.

Allowance Patterns

Examiner CARROLL, DAVID P.'s allowance rate of 81.2% places them in the 52% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by CARROLL, DAVID P. receive 1.43 office actions before reaching final disposition. This places the examiner in the 23% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by CARROLL, DAVID P. is 24 months. This places the examiner in the 84% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +21.1% benefit to allowance rate for applications examined by CARROLL, DAVID P.. This interview benefit is in the 65% 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, 31.9% of applications are subsequently allowed. This success rate is in the 66% 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 31.5% of cases where such amendments are filed. This entry rate is in the 46% 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, 0.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 19% percentile among all examiners. Note: Pre-appeal conferences show limited success with this examiner compared to others. While still worth considering, be prepared to proceed with a full appeal brief if the PAC does not result in favorable action.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 42.9% of appeals filed. This is in the 9% percentile among all examiners. 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, 38.3% are granted (fully or in part). This grant rate is in the 27% 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 39% 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 0.0% of allowed cases (in the 42% 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.