USPTO Art Unit 1729 Prosecution Statistics

Art Unit Information

Art Unit: 1729
Group: 1720
Tech Center: 1700
Total Cases: 9,452
Last Active: November 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19391887SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSNovember 2025February 2026Allow300YesNo
19327004NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, AND ELECTRIC DEVICESeptember 2025March 2026Allow610NoNo
19313125END PLATE, CASE, BATTERY, ELECTRIC DEVICE, AND ASSEMBLING METHOD FOR CASEAugust 2025January 2026Allow510NoNo
19299369CURRENT COLLECTOR, BATTERY CELL, BATTERY AND ELECTRICAL DEVICEAugust 2025February 2026Allow611YesNo
19296899BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUSAugust 2025February 2026Allow710NoNo
19291617BATTERY CELL, BATTERY, ELECTRIC APPARATUS, AND ENERGY STORAGE APPARATUSAugust 2025January 2026Allow510NoNo
19210930SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSMay 2025November 2025Allow620YesNo
19197732SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSMay 2025August 2025Allow400NoNo
19185300HONEYCOMB-IMMERSED HEATING AND COOLING INTEGRATED BATTERY SYSTEM AND THERMAL MANAGEMENT METHOD THEREOFApril 2025September 2025Allow410NoNo
19174132Lithium Secondary Battery, Battery Module and Battery PackApril 2025December 2025Allow810YesNo
19076674SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSMarch 2025February 2026Abandon1111YesNo
19070118LOWER PLASTIC MEMBER, END COVER ASSEMBLY, ENERGY STORAGE APPARATUS, AND POWER CONSUMING DEVICEMarch 2025May 2025Allow200NoNo
19066070HYBRID ELECTROCHEMICAL CELL AND A METHOD OF PRODUCING THEREOFFebruary 2025December 2025Allow1021NoNo
19064652POSITIVE ELECTRODE MATERIALS OF LOW-COST ALKALINE SECONDARY BATTERIES AND PREPARATION METHODS AND APPLICATIONS THEREOFFebruary 2025November 2025Allow811NoNo
19048603ELECTRODE MATERIALS, ELECTRODES, DEVICES, AND METHODS OF MAKING THEREOFFebruary 2025May 2025Allow310NoNo
19033545NONAQUEOUS ELECTROLYTE SOLUTION, SECONDARY BATTERY CONTAINING SAME, AND ELECTRICAL DEVICEJanuary 2025September 2025Allow810NoNo
19030191ELECTRODE MATERIALS, ELECTRODES, DEVICES, AND METHODS OF MAKING THEREOFJanuary 2025September 2025Allow811NoNo
19023905MULTILAYER NANOPOROUS SEPARATORJanuary 2025August 2025Allow720YesNo
19021320STRUCTURAL BEAM, BOX, BATTERY, AND ELECTRIC DEVICEJanuary 2025November 2025Allow1011NoNo
19021913MULTILAYER NANOPOROUS SEPARATORJanuary 2025July 2025Allow620YesNo
19022365MULTILAYER NANOPOROUS SEPARATORJanuary 2025July 2025Allow620YesNo
18879797CARBON NANOTUBE DISPERSION COMPOSITION, CARBON NANOTUBE RESIN COMPOSITION, MIXTURE SLURRY, ELECTRODE FILM, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERYDecember 2024September 2025Allow810YesNo
18948493COMPOSITE NEGATIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE PLATE COMPRISING SAME, SECONDARY BATTERY, AND POWER CONSUMING DEVICENovember 2024November 2025Allow1220NoNo
18909797BATTERY MODULE AND BATTERY PACK INCLUDING THE SAMEOctober 2024June 2025Allow820YesNo
18887798METHOD OF MANUFACTURING BATTERY MODULE WITH FLEXIBLE INTERCONNECTORSeptember 2024March 2026Allow1810NoNo
18883766FUEL CELL SYSTEM INCLUDING ALCOHOL VAPORIZATION COMPONENTS AND METHOD OF OPERATING THE SAMESeptember 2024June 2025Allow1011NoNo
18824314SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSSeptember 2024December 2024Allow310NoNo
18816719CARBON NANOTUBE SODIOPHILIC METAL ANODE-FREE SODIUM METAL BATTERY ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR AND APPLICATION THEREOFAugust 2024December 2024Allow410NoNo
18841175LITHIUM ION CONDUCTIVE SOLID ELECTROLYTEAugust 2024August 2025Abandon1210NoNo
18799795ELECTRODE MATERIALS, ELECTRODES, DEVICES, AND METHODS OF MAKING THEREOFAugust 2024January 2025Allow610NoNo
18795082SILICON CARBON COMPOSITE MATERIAL AND PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE PLATE, ELECTRODE ASSEMBLY, BATTERY, ELECTRIC EQUIPMENT, AND CARBON SUBSTRATEAugust 2024March 2025Allow811NoNo
18783548VOLTAGE DROP CIRCUIT ASSEMBLY OF LITHIUM BATTERY AND 1.5V LITHIUM BATTERYJuly 2024December 2024Allow401NoNo
18832651CATHODE MATERIAL FOR SODIUM-ION BATTERIES, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOFJuly 2024September 2025Allow1420NoNo
18779553FLEXIBLE BATTERYJuly 2024June 2025Abandon1111YesNo
18832057BATTERY PACK AND VEHICLE INCLUDING THE SAMEJuly 2024February 2025Allow710NoNo
18730036ELECTROLYTE SUPPLY SYSTEM AND SECONDARY BATTERY USING SAMEJuly 2024October 2024Allow300YesNo
18771951Zeolite Battery HeaterJuly 2024July 2025Allow1211YesNo
18757501SECONDARY BATTERY INTERNAL PRESSURE MEASUREMENT METHODJune 2024March 2026Allow2020NoNo
18752240Secondary Battery And Method For Manufacturing The SameJune 2024December 2024Allow610NoNo
18750818POLYMER-MODIFIED POROUS MATERIAL, MEMBRANE ELECTRODE, SECONDARY BATTERY, AND ELECTRIC DEVICEJune 2024November 2024Allow510NoNo
18741975Organic and Inorganic Composite Polymer Electrolyte and All Solid State Battery Comprising the SameJune 2024August 2025Allow1430NoNo
18741165SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSJune 2024January 2025Allow810NoNo
18741181SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSJune 2024April 2025Allow1020YesNo
18741348DRY ELECTRODE MANUFACTURE WITH COMPOSITE BINDERJune 2024December 2025Allow1820YesNo
18738427ELECTRODE WITH CONDUCTIVE INTERLAYER AND METHOD THEREOFJune 2024August 2025Abandon1511NoNo
18735216LIQUID COOLING PLATE AND BATTERY MODULEJune 2024December 2024Allow710NoNo
18711744BATTERY PACK AND VEHICLE INCLUDING THE SAMEMay 2024December 2024Allow710YesNo
18662557LITHIUM METAL ANODE, FABRICATION METHOD THEREOF, AND LITHIUM SECONDARY BATTERY COMPRISING SAME ANODEMay 2024November 2025Allow1830YesNo
18659291SOLID OXIDE FUEL CELL COMPRISING ANODE ALKALINE-BASED PROMOTER LOADEDMay 2024May 2025Allow1210NoNo
18656001BATTERY COOLING PLATEMay 2024February 2025Allow910NoNo
18655565RECHARGEABLE ELECTROCHEMICAL DEVICES AND METHODS FOR THE SAMEMay 2024July 2025Allow1530YesNo
18655905SILICON ANODES WITH WATER-SOLUBLE MALEIC ANHYDRIDE-, AND/OR MALEIC ACID-CONTAINING POLYMERS/COPOLYMERS, DERIVATIVES, AND/OR COMBINATIONS (WITH OR WITHOUT ADDITIVES) AS BINDERSMay 2024July 2025Allow1410NoNo
18650789SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSApril 2024July 2024Allow300NoNo
18641687ELECTROLYTES FOR HIGH-VOLTAGE CATHODE MATERIALS AND OTHER APPLICATIONSApril 2024December 2024Allow810NoNo
18637019BOTTOM SUPPORT FOR BATTERY CELL, BATTERY CELL, BATTERY, AND ELECTRIC DEVICEApril 2024September 2025Abandon1730NoYes
18634226BATTERY CONTAINERApril 2024December 2024Allow810YesNo
18634689INTEGRATED ENERGY STORAGE SYSTEMApril 2024July 2025Allow1520NoNo
18624613System and Method For a Battery Safety DeviceApril 2024August 2025Allow1611NoNo
18620269Secondary Battery And Method For Manufacturing The SameMarch 2024February 2025Allow1110NoNo
18618609Secondary Battery And Method For Manufacturing The SameMarch 2024February 2025Allow1110NoNo
18616052POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR PREPARATION THEREOF, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY AND ELECTRICAL DEVICE CONTAINING THE SAMEMarch 2024July 2024Allow401NoNo
18615291NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND BATTERY MODULEMarch 2024January 2025Allow1010NoNo
18611976SEALED BATTERY AND ASSEMBLED BATTERYMarch 2024December 2024Allow910NoNo
18607974Integrated battery comprising a secondary battery with charge maintained by a semiconductor batteryMarch 2024June 2025Allow1510YesNo
18608743BATTERY CELL, METHOD AND APPARATUS FOR MANUFACTURING THE SAME, BATTERY, AND ELECTRIC APPARATUSMarch 2024February 2025Allow1111NoNo
18608314TOP CAP ASSEMBLY, BATTERY, AND ELECTRICAL DEVICEMarch 2024October 2024Allow710NoNo
18606206BATTERY PACK WITH AIRGAP SIZING FOR PREVENTING EJECTA DEBRIS CLOGGINGMarch 2024March 2025Allow1210NoNo
18603247HOMOLOGOUS HETEROSTRUCTURE FeSe ELECTRODE MATERIAL WITH HIGH TAP DENSITY AND PREPARATION METHOD THEREOFMarch 2024June 2025Allow1520NoNo
18600071ELECTRODE ASSEMBLY HAVING IMPROVED SAFETY OF USE BY MEANS OF OUTERMOST ELECTRODE STRUCTURE AND CURRENT COLLECTOR MATERIAL, AND LITHIUM-ION SECONDARY BATTERY HAVING SAMEMarch 2024November 2024Allow810NoNo
18597783SEPARATOR FOR ELECTROCHEMICAL DEVICE AND ELECTROCHEMICAL DEVICE INCLUDING THE SAMEMarch 2024July 2025Allow1640NoNo
18588179BATTERY MODULE AND A METHOD FOR COOLING A BATTERY MODULE OF AN ELECTRIC VEHICLEFebruary 2024August 2025Allow1830YesNo
18585236SOLID ELECTROLYTE WITH PROTRUSION AND ALL SOLID-STATE BATTERIES COMPRISING SAMEFebruary 2024August 2025Allow1820YesNo
18435761SYSTEM AND METHOD FOR FIRE DETECTION AND MITIGATION FOR ENERGY STORAGE SYSTEMSFebruary 2024July 2024Allow601YesNo
18427349Systems and Methods for Monitoring Thermal Conditions of Batteries in a Storage AreaJanuary 2024September 2024Allow810YesNo
18420078ELECTROLYTE MEMBRANE FOR LITHIUM-AIR BATTERY, METHOD OF MANUFACTURING SAME AND LITHIUM-AIR BATTERY COMPRISING SAMEJanuary 2024September 2025Allow2020YesNo
18418877HIGH-ENTROPY SODIUM ION BATTERY CATHODE MATERIALJanuary 2024December 2025Abandon2340NoNo
18418102BATTERY MODULES COMPRISING IMMERSION-COOLED PRISMATIC BATTERY CELLS AND METHODS OF FABRICATING THEREOFJanuary 2024August 2024Allow711YesNo
18580932Battery Cell and Battery Module Comprising SameJanuary 2024July 2024Allow600NoNo
18415666ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAMEJanuary 2024August 2025Allow1930YesNo
18413239HYDROVOLTAIC POWER GENERATION DEVICES UTILIZING CARBON SPHERE-COATED NICKEL FOAM/PET SUBSTRATEJanuary 2024March 2024Allow200NoNo
18410795ELEMENTAL METAL AND CARBON MIXTURES FOR ENERGY STORAGE DEVICESJanuary 2024January 2025Allow1210NoNo
18408852SELECTIVELY ACTIVATED METAL-AIR BATTERYJanuary 2024November 2024Allow1010NoNo
18407401LITHIUM-ION BATTERY WITH PRE-FORMED SOLID ELECTROLYTE INTERFACE LAYER AND IMPROVED SPECIFIC CAPACITY AFTER INITIAL CHARGEJanuary 2024January 2026Abandon2511NoNo
18404251ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE INCLUDING SAMEJanuary 2024March 2025Allow1420YesNo
18402467BATTERY PACK HAVING STRUCTURE CAPABLE OF SWELLING CONTROL AND VEHICLE INCLUDING THE BATTERY PACKJanuary 2024June 2025Allow1730YesNo
18402347SWAPPABLE BATTERY MODULES COMPRISING IMMERSION-THERMALLY CONTROLLED PRISMATIC BATTERY CELLS AND METHODS OF FABRICATING THEREOFJanuary 2024May 2024Allow410NoNo
18400498POSITIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOFDecember 2023April 2025Allow1531NoNo
18398983CATHODE MATERIAL AND METHODS OF FORMINGDecember 2023December 2025Allow2450YesNo
18399062THREE-DIMENSIONAL BATTERIES WITH COMPRESSIBLE CATHODESDecember 2023June 2025Allow1711YesNo
18398445SEALED BATTERY AND ASSEMBLED BATTERYDecember 2023October 2024Allow1010NoNo
18393712ELECTRODE ASSEMBLY, AND LITHIUM ION ELECTRIC ROLL USING THE ELECTRODE ASSEMBLYDecember 2023November 2024Allow1120YesNo
18392832ENERGY STORAGE DEVICE AND POWER CONSUMING DEVICEDecember 2023February 2024Allow200NoNo
18392979ENERGY-STORAGE DEVICE AND ELECTRICITY-CONSUMPTION DEVICEDecember 2023June 2024Allow610NoNo
18389965NEGATIVE ELECTRODEDecember 2023February 2026Allow2640NoNo
18543515SYSTEMS AND METHODS FOR MINIMIZING AND PREVENTING DENDRITE FORMATION IN ELECTROCHEMICAL CELLSDecember 2023April 2024Allow310YesNo
18544234LITHIUM-SULFUR BATTERYDecember 2023April 2025Allow1620YesNo
18542616Integrated Battery USING AIRFLOW SENSOR FOR CONTROLDecember 2023June 2024Allow610NoNo
18542508ELECTROLYZER AND METHOD OF USEDecember 2023September 2025Allow2111NoNo
18539853IMPROVED ELECTROCHEMICAL MEMBRANEDecember 2023April 2025Allow1620NoNo
18537953METHOD FOR PREPARING SODIUM SUPER IONIC CONDUCTOR SOLID ELECTROLYTE BY LOW-DIMENSIONAL CRYSTALLIZATIONDecember 2023June 2024Allow610NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1729.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
279
Examiner Affirmed
168
(60.2%)
Examiner Reversed
111
(39.8%)
Reversal Percentile
79.5%
Higher than average

What This Means

With a 39.8% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
745
Allowed After Appeal Filing
228
(30.6%)
Not Allowed After Appeal Filing
517
(69.4%)
Filing Benefit Percentile
41.0%
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, 30.6% 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.

Art Unit 1729 - Prosecution Statistics Summary

Executive Summary

Art Unit 1729 is part of Group 1720 in Technology Center 1700. This art unit has examined 9,452 patent applications in our dataset, with an overall allowance rate of 64.3%. Applications typically reach final disposition in approximately 36 months.

Comparative Analysis

Art Unit 1729's allowance rate of 64.3% places it in the 21% percentile among all USPTO art units. This art unit has a significantly lower allowance rate than most art units at the USPTO.

Prosecution Patterns

Applications in Art Unit 1729 receive an average of 2.46 office actions before reaching final disposition (in the 86% percentile). The median prosecution time is 36 months (in the 26% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more challenging examination environment compared to the USPTO average.
  • With more office actions than average, plan for multiple rounds of prosecution.
  • The median prosecution time is longer than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

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.