USPTO Art Unit 1728 Prosecution Statistics

Art Unit Information

Art Unit: 1728
Group: 1720
Tech Center: 1700
Total Cases: 1,976
Last Active: June 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19242841PASSIVATED CONTACT STRUCTURE, SOLAR CELL, MODULE AND SYSTEMJune 2025December 2025Allow600NoNo
19237048DETECTION METHOD AND APPARATUS FOR INVERTER SYSTEM AND INVERTER SYSTEMJune 2025October 2025Allow501NoNo
19233526CATHODE ACTIVE MATERIAL PRECURSOR, CATHODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAMEJune 2025November 2025Allow510YesNo
19117099NEAR-FIELD THERMAL RADIATION POWER GENERATION ELEMENTMarch 2025March 2026Allow1100YesNo
19069577Solar Energy JacketMarch 2025October 2025Allow821YesNo
19056192END COVER ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRICAL APPARATUSFebruary 2025January 2026Allow1121NoNo
19044248Solar Panel Secured to a Portable Electronic DeviceFebruary 2025February 2026Allow1331YesNo
18969778MULTI-GLASS MODULE FOR A SOLAR TRACKER APPARATUSDecember 2024March 2026Allow1511NoNo
18948558SELF-POWERED DISPLAY DEVICENovember 2024March 2026Allow1611NoNo
18945987SOLAR CELL UNIT AND SOLAR CELL UNIT MAINTENANCE SYSTEMNovember 2024January 2026Allow1410NoNo
18940465THIN-FILM CRYSTALLINE SILICON SOLAR CELL USING A NANOIMPRINTED PHOTONIC-PLASMONIC BACK-REFLECTOR STRUCTURENovember 2024January 2026Allow1410NoNo
18859318SUPPORTING STRUCTURE FOR PHOTOVOLTAIC PANELSOctober 2024March 2026Abandon1710NoNo
18918588Integrated Bypass Diode Schemes for Solar ModulesOctober 2024February 2026Allow1610NoNo
18854587PHOTOVOLTAIC AND THERMAL SOLAR PANELOctober 2024March 2026Allow1720NoNo
18853051VEHICLE WINDOW COMPRISING A SOLAR CELL ARRANGEMENTSeptember 2024March 2026Abandon1710NoNo
18889599Device for converting thermal energy into electric powerSeptember 2024December 2025Allow1511NoNo
18890730METHOD FOR MAKING ITO PEROVSKITE SOLAR CELLSSeptember 2024October 2025Allow1310NoNo
18848041Method for Controlling Fuel Cell System and Fuel Cell SystemSeptember 2024April 2025Allow710NoNo
18882266Method For Manufacturing A Co-Axial Glass-To-Metal Seal For A Case-Neutral Electrochemical CellSeptember 2024January 2025Allow410NoNo
18829421PHOTOVOLTAIC SCREEN SYSTEMSeptember 2024September 2025Allow1231YesNo
18810265Auto-Engaging Electrical Connections for Solar PanelsAugust 2024September 2024Allow150NoNo
18803636PHOTOVOLTAIC MODULEAugust 2024July 2025Allow1100NoNo
18790822BACK CONTACT CELL AND SOLAR CELL MODULEJuly 2024October 2025Allow1531NoNo
18780194Window Systems and ComponentsJuly 2024March 2026Allow2020YesNo
18729256THERMOELECTRIC MODULEJuly 2024February 2026Allow1910NoNo
18773335PRESSURE JIG APPARATUS FOR BRINGING ELECTRODE LEAD INTO CLOSE CONTACT WITH BUS BAR AND BATTERY MODULE MANUFACTURING SYSTEM INCLUDING SAMEJuly 2024December 2025Allow1710NoNo
18764305PHOTOVOLTAIC POWER GENERATION DEVICE FOR FACILITATING HEAT DISSIPATIONJuly 2024December 2025Abandon1810NoNo
18758348SENSING ROOFING SYSTEM AND METHOD THEREOFJune 2024March 2026Allow2121NoNo
18752249SYSTEMS AND METHODS FOR TRACKER-LEVEL PROTECTIONJune 2024November 2025Allow1710NoNo
18745582HYBRID RECEIVER FOR CONCENTRATED PHOTOVOLTAIC-THERMAL POWER SYSTEMS, AND ASSOCIATED METHODSJune 2024October 2025Allow1610NoNo
18719370PHOTOVOLTAIC MODULE AND METHOD FOR PRODUCING A PHOTOVOLTAIC MODULEJune 2024March 2026Abandon2111NoNo
18740195Conductive Power Rod for Electrochemical CellJune 2024February 2025Abandon820YesNo
18680234Solar CellMay 2024March 2026Allow2110NoNo
18672012BOX, BATTERY, ELECTRICAL APPARATUS, AND METHOD AND APPARATUS FOR PREPARING BATTERYMay 2024January 2026Allow2000NoNo
18669915ANODE ACTIVE MATERIAL, METHOD FOR PRODUCING ANODE ACTIVE MATERIAL AND LITHIUM ION BATTERYMay 2024May 2025Allow1110NoNo
18667109PHOTOVOLTAICS PANEL, PHOTOVOLTAICS SYSTEM AND EVAPORATING SYSTEM FOR PHOTOVOLTAICS SYSTEMMay 2024February 2026Allow2120NoNo
18659349THERMOELECTRIC CHARGERS EMBEDDED IN THERMALLY INSULATED CONTAINERS AND METHODS OF CHARGING ELECTRONIC DEVICES USING THE SAMEMay 2024December 2025Allow1941YesNo
18654149HIGHLY ACTIVE, ROBUST AND VERSATILE MULTIFUNCTIONAL, FULLY NON-NOBLE METALS BASED ELECTRO-CATALYST COMPOSITIONS AND METHODS OF MAKING FOR ENERGY CONVERSION AND STORAGEMay 2024July 2025Allow1401NoNo
18653824RECHARGEABLE BATTERYMay 2024April 2025Allow1210NoNo
18646474SOLAR CELL, TANDEM SOLAR CELL, AND PHOTOVOLTAIC MODULEApril 2024August 2025Allow1610NoNo
18643682NEGATIVE ELECTRODE AND SECONDARY BATTERY INCLUDING THE SAMEApril 2024October 2025Allow1830YesNo
18638486ELECTRODES, LITHIUM-ION BATTERIES, AND METHODS OF MAKING AND USING SAMEApril 2024September 2025Allow1710NoNo
18700990SOLAR TRACKER SUPPORT SYSTEM AND INSTALLATION APPARATUSApril 2024February 2026Allow2211NoNo
18629681POWER GENERATION DEVICEApril 2024August 2025Allow1620NoNo
18626279SOLAR CELL AND METHOD FOR PREPARING THE SAME, TANDEM SOLAR CELL, AND PHOTOVOLTAIC MODULEApril 2024September 2025Allow1810YesNo
18625105BATTERY CELL, BATTERY, ELECTRICAL APPARATUS, METHOD AND DEVICE FOR MANUFACTURING BATTERY CELLApril 2024July 2024Allow401NoNo
18624445CERIA-CARBON-SULFUR COMPOSITE, METHOD FOR PREPARING SAME, AND POSITIVE ELECTRODE AND LITHIUM-SULFUR BATTERY COMPRISING SAMEApril 2024August 2025Allow1720NoNo
18623301Receptor material, synthesis method and use thereofApril 2024August 2025Allow1631NoNo
18621417SHINGLED SOLAR CELL MODULEMarch 2024December 2025Allow2110NoNo
18696561THERMOELECTRIC CONVERSION ELEMENT AND METHOD FOR PRODUCING SAMEMarch 2024March 2026Abandon2411NoNo
18617788SOLAR CELL AND PHOTOVOLTAIC MODULEMarch 2024September 2025Allow1811NoNo
18612233POWER STORAGE CELLMarch 2024June 2025Allow1510NoNo
18612303ORGANIC ELECTROLUMINESCENCE DEVICE AND HETEROCYCLIC COMPOUND FOR ORGANIC ELECTROLUMINESCENCE DEVICEMarch 2024August 2025Allow1720YesNo
18692815LIGHT-EMITTING SOLAR ENERGY COLLECTION DEVICE AND MANUFACTURING METHOD THEREFORMarch 2024February 2026Abandon2311NoNo
18605467CONTROLLING USAGE OF SOLAR PANEL ENERGYMarch 2024October 2025Abandon1901NoNo
18604365METHODS FOR IMPROVING PEROVSKITE SOLAR CELLSMarch 2024December 2025Allow2111YesNo
18603764Electrode StructureMarch 2024April 2025Allow1310NoNo
18602023SOLAR CELL, PHOTOVOLTAIC MODULE, AND ELECTRICAL DEVICEMarch 2024December 2025Allow2120YesNo
18690854ENERGY HARVESTING DEVICE AND ENERGY HARVESTING SYSTEMMarch 2024January 2026Allow2220NoNo
18690294ADHESIVE COMPOSITIONS, LAYERED ARTICLES AND PHOTOVOLTAIC SHEETSMarch 2024October 2025Allow1900NoNo
18599318Co-Axial Glass-To-Metal Seal For A Case-Neutral Electrochemical CellMarch 2024February 2025Allow1121YesNo
18689700MEDIUM VOLTAGE ARRANGEMENT OF SOLAR MODULES AND POWER CONVERTERMarch 2024December 2025Allow2211YesNo
18595876SOLAR CELL, METHOD FOR PREPARING THE SAME, AND PHOTOVOLTAIC MODULEMarch 2024July 2025Allow1630NoNo
18593227BATTERYMarch 2024February 2026Allow2330NoNo
18688661SELF SUFFICIENT ENERGY SUPPLIED SYSTEM FOR GENERATING ATMOSPHERIC WATER AND METHOD TO CONTROL THE SYSTEMMarch 2024October 2025Abandon1901NoNo
18687482Three-dimensional photovoltaic moduleFebruary 2024February 2026Allow2320YesNo
18588813BATTERY MODULEFebruary 2024March 2025Allow1210YesNo
18581168METHOD FOR IMPROVING CONTACT RESISTANCE OF A MULTI-JUNCTION SOLAR CELLFebruary 2024January 2026Allow2310NoNo
18443321Solar Cell Connector and String Process for Solar CellsFebruary 2024October 2025Abandon2010NoNo
18443966ELECTROCHEMICAL SENSORFebruary 2024October 2025Allow1910NoNo
18442245SOLAR CELL, MULTI-JUNCTION TYPE SOLAR CELL, SOLAR CELL MODULE, AND SOLAR CELL POWER GENERATION SYSTEMFebruary 2024November 2025Abandon2101NoNo
18439522TRI-LAYER SEMICONDUCTOR STACKS FOR PATTERNING FEATURES ON SOLAR CELLSFebruary 2024August 2025Allow1810NoNo
18438673ALL SOLID STATE BATTERY AND METHOD FOR PRODUCING ALL SOLID STATE BATTERYFebruary 2024January 2026Abandon2330YesNo
18682397FLEXIBLE, EXTENSIBLE, BATTERY MANAGEMENT SYSTEMSFebruary 2024October 2025Allow2021YesNo
18435968SOLAR CELL AND PHOTOVOLTAIC MODULEFebruary 2024December 2025Allow2211YesNo
18434145Transparent Solar Cells For AgrivoltaicsFebruary 2024January 2026Allow2311NoNo
18427841STACKED SOLID STATE BATTERIES AND METHODS OF MAKING THE SAMEJanuary 2024September 2025Abandon2010NoNo
18426591NONAQUEOUS ELECTROLYTE SECONDARY BATTERYJanuary 2024September 2024Allow700NoNo
18292331IN-LINE MANUFACTURING APPARATUS FOR LITHIUM METAL BATTERYJanuary 2024August 2025Allow1830NoNo
18422955PHOTOELECTRIC DEVICE BASED ON QUANTUM DOTS AND ITS MANUFACTURING METHODJanuary 2024July 2025Allow1711NoNo
18420437THERMOELECTRIC CONVERSION ELEMENT AND THERMOELECTRIC CONVERSION DEVICEJanuary 2024February 2026Abandon2520NoNo
18291375SOLAR CELL MODULEJanuary 2024October 2025Abandon2110NoNo
18417088CARBON DIOXIDE PRODUCTION FROM CARBONATE FUEL CELLSJanuary 2024September 2025Allow1901NoNo
18415483MULTI-BRANCH FIXED OFFSHORE PHOTOVOLTAIC STRUCTURE WITH AUTOMATIC PITCH ADJUSTMENTJanuary 2024December 2025Allow2310NoNo
18412644BATTERY CONNECTION MODULEJanuary 2024October 2024Allow910NoNo
18410077APPARATUS FOR SUPPORTING AN ARRAY OF LAYERS OF AMPHIPHILIC MOLECULES AND METHOD OF FORMING AN ARRAY OF LAYERS OF AMPHIPHILIC MOLECULESJanuary 2024October 2025Allow2111NoNo
18577737PRISMATIC SOLAR CONCENTRATORJanuary 2024March 2026Abandon2601NoNo
18577749METHOD FOR CONTROLLING A TRACKING DEVICE FOR MAXIMIZING THE CURRENT PRODUCED BY A BIFACIAL PHOTOVOLTAIC SOLAR MODULE WITH MULTI-JUNCTION CELLSJanuary 2024July 2025Allow1910NoNo
18405779FRONT FAIRINGS FOR VEHICLESJanuary 2024September 2025Allow2110YesNo
18405689BATTERY PACKJanuary 2024June 2025Allow1820NoNo
18405575SEPARATOR FOR ZINC SECONDARY BATTERYJanuary 2024September 2024Allow800YesNo
18406084Solar Cell Interconnection Wire Interconnect Structure with Strain Relief FeaturesJanuary 2024November 2025Allow2201NoNo
18405610CARBON ADHERED GRAPHITE TABS FOR BATTERY TERMINAL FASTENINGJanuary 2024September 2025Allow2021YesNo
18402240Battery Module, Battery Pack Including Same Battery Module, and Automobile Including Same Battery PackJanuary 2024December 2024Allow1120YesNo
18400838BATTERY AND POWER CONSUMING DEVICE HAVING THE SAMEDecember 2023February 2025Allow1310NoNo
18395083ENERGY-STORAGE APPARATUS AND ELECTRICITY-CONSUMPTION DEVICEDecember 2023May 2024Allow410NoNo
18390309SOLID ELECTROLYTE MEMBRANE, METHOD FOR MANUFACTURING THE SAME, AND ALL-SOLID-STATE BATTERY COMPRISING THE SAMEDecember 2023August 2025Allow2041YesNo
18545714CONTROL CIRCUITRY OF A MICROCONTROLLER OF A PHOTOVOLTAIC SYSTEM WITHOUT BATTERY AND ASSOCIATED METHOD AND DEVICESDecember 2023July 2025Allow1910YesNo
18544819LIGHT COLLECTING DEVICEDecember 2023August 2025Allow2010NoNo
18544786ELECTRIC VEHICLE BATTERY PACK HAVING BOTTOM STRIKE SHIELDDecember 2023September 2025Allow2120YesNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 1728.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
25
Examiner Affirmed
14
(56.0%)
Examiner Reversed
11
(44.0%)
Reversal Percentile
88.9%
Higher than average

What This Means

With a 44.0% 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
94
Allowed After Appeal Filing
33
(35.1%)
Not Allowed After Appeal Filing
61
(64.9%)
Filing Benefit Percentile
65.3%
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, 35.1% 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.

Art Unit 1728 - Prosecution Statistics Summary

Executive Summary

Art Unit 1728 is part of Group 1720 in Technology Center 1700. This art unit has examined 1,976 patent applications in our dataset, with an overall allowance rate of 60.1%. Applications typically reach final disposition in approximately 39 months.

Comparative Analysis

Art Unit 1728's allowance rate of 60.1% places it in the 15% 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 1728 receive an average of 2.35 office actions before reaching final disposition (in the 81% percentile). The median prosecution time is 39 months (in the 16% 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.