USPTO Art Unit 2891 Prosecution Statistics

Art Unit Information

Art Unit: 2891
Group: 2890
Tech Center: 2800
Total Cases: 17,171
Last Active: July 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19256431POWER MICROELECTRONIC DEVICEJuly 2025September 2025Allow200NoNo
19257402GAN-BASED DEVICE BASED ON PATTERNED OHMIC CONTACT AND MANUFACTURING METHOD THEREOFJuly 2025August 2025Allow200NoNo
19241538SEMICONDUCTOR DEVICE WITH VERTICALLY STACKED GAN COMPLEMENTARY FETSJune 2025August 2025Allow200NoNo
19027364HIGH MOBILITY TRANSISTOR WITH ALGAN BUFFER LAYERJanuary 2025April 2025Allow300YesNo
19004515WIDE BANDGAP SEMICONDUCTOR STRUCTURE FOR IRRADIATION CHARACTERISTIC TEST AND PREPARATION METHOD THEREOFDecember 2024March 2025Allow300NoNo
18879459OPTOELECTRONIC DEVICE WITH REFLECTORDecember 2024June 2025Allow500NoNo
18869453TRENCH GATE POWER MOSFET AND MANUFACTURING METHOD THEREFORNovember 2024March 2025Allow400NoNo
18864780SUPER-SEMICONDUCTORS BASED ON NANOSTRUCTURED ARRAYSNovember 2024February 2025Allow300NoNo
18924840MONOLITHIC RGB MICROLED ARRAYOctober 2024June 2025Allow801NoNo
18916467P-GAN HIGH ELECTRON MOBILITY TRANSISTOR (HEMT) WITH MOS2-BASED 2D BARRIEROctober 2024December 2024Allow200NoNo
18913184WAFER-SCALE SEPARATION AND TRANSFER OF GAN MATERIALOctober 2024October 2025Allow1311YesNo
18901832OPTOELECTRONIC DEVICE AND MANUFACTURING METHODSeptember 2024March 2025Allow610NoNo
18895947SEMICONDUCTOR DEVICESeptember 2024November 2024Allow200NoNo
18893967METHOD FOR MANUFACTURING SEMICONDUCTOR STACK STRUCTURE WITH ULTRA THIN DIESeptember 2024April 2025Allow611NoNo
18893715SEMICONDUCTOR DEVICESeptember 2024January 2025Allow410NoNo
18884085Method for Packaging Stacking Flip ChipSeptember 2024January 2025Allow401NoNo
18846211MANUFACTURING METHOD FOR POWER SEMICONDUCTOR DEVICE USING LOW-ENERGY ELECTRON RADIATION TO PRODUCE SILICON-ENRICHED LAYERSeptember 2024June 2025Allow910NoNo
18846163SEMICONDUCTOR DEVICE FOR POWER AMPLIFICATIONSeptember 2024March 2025Allow600NoNo
18830089SEMICONDUCTOR DEVICESeptember 2024August 2025Allow1100NoNo
18827272VERTICAL POWER SEMICONDUCTOR DEVICE INCLUDING SILICON CARBIDE (SIC) SEMICONDUCTOR BODYSeptember 2024December 2024Allow400NoNo
18826815ELECTRONIC PACKAGE AND FABRICATING METHOD THEREOFSeptember 2024November 2025Allow1400NoNo
18799155METHOD FOR MANUFACTURING A COLOUR CONVERSION OPTOELECTRONIC DEVICE, INCLUDING A STEP OF OPTICALLY FORMING SURFACE POTENTIAL PATTERNS IN AN ELECTRET LAYERAugust 2024October 2024Allow200NoNo
18791575INHERENT AREA SELECTIVE DEPOSITION OF SILICON-CONTAINING DIELECTRIC ON METAL SUBSTRATEAugust 2024April 2025Allow900NoNo
18788160HIGH ELECTRON MOBILITY TRANSISTOR AND METHOD FOR FABRICATING THE SAMEJuly 2024December 2025Allow1610NoNo
18786937NVM-ALEFT-ISD-LTSEEJuly 2024June 2025Allow1011NoNo
18769106Semiconductor Fin StructuresJuly 2024October 2025Allow1510NoNo
18765720GATE STRUCTURES IN TRANSISTORS AND METHOD OF FORMING SAMEJuly 2024August 2025Allow1310NoNo
18765653METHODS OF FORMING WIRE INTERCONNECT STRUCTURES AND RELATED WIRE BONDING TOOLSJuly 2024April 2025Allow900YesNo
18761282HIGH ELECTRON MOBILITY TRANSISTOR AND METHOD FOR FORMING THE SAMEJuly 2024May 2025Allow1010NoNo
18760559TRANSISTOR ARRANGEMENT WITH A LOAD TRANSISTOR AND A SENSE TRANSISTORJuly 2024May 2025Allow1010NoNo
18758940DISPLAY DEVICE AND MANUFACTURING METHOD THEREOFJune 2024July 2025Allow1210NoNo
18759212SEMICONDUCTOR DEVICE AND METHOD FOR FORMING THE SAMEJune 2024May 2025Allow1010NoNo
18758647INTEGRATED CIRCUIT DEVICEJune 2024September 2025Allow1520NoNo
18754058HETEROGENEOUS INTEGRATION OF RADIO FREQUENCY TRANSISTOR CHIPLETS HAVING INTERCONNECTIONS TO HOST WAFER CIRCUITS FOR OPTIMIZING OPERATING CONDITIONSJune 2024November 2024Allow510YesNo
18723764POWER SEMICONDUCTOR DEVICE AND MANUFACTURIING METHODJune 2024September 2024Allow200NoNo
18752525METHODS OF FORMING MICROELECTRONIC DEVICES INCLUDING DIFFERENTLY SIZED CONDUCTIVE CONTACT STRUCTURESJune 2024June 2025Allow1210NoNo
18750077DISPLAY PANEL AND DISPLAY APPARATUSJune 2024July 2025Allow1310NoNo
18749227PHOTOSENSITIVE IMAGING DEVICES AND ASSOCIATED METHODSJune 2024February 2026Abandon2020YesNo
18746913DISPLAY APPARATUSJune 2024June 2025Allow1210NoNo
18746055INTERCONNECTION STRUCTUREJune 2024October 2025Allow1600NoNo
18744009DISPLAY DEVICEJune 2024July 2025Allow1310NoNo
18741863MULTI-FUNCTION SUBSTRATEJune 2024July 2025Allow1320NoNo
18743061HIGH ELECTRON MOBILITY TRANSISTOR AND METHOD FOR FABRICATING THE SAMEJune 2024March 2025Allow900NoNo
18741602DISPLAY PANEL AND DISPLAY DEVICE INCLUDING DISPLAY PANELJune 2024February 2025Allow900NoNo
18738205DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAMEJune 2024October 2025Allow1720NoNo
18733947TRENCH ISOLATION STRUCTURE FOR SCALED PIXEL REGIONJune 2024February 2026Allow2101NoNo
18732645HIGH ELECTRON MOBILITY TRANSISTOR AND METHOD FOR FABRICATING THE SAMEJune 2024March 2025Allow900YesNo
18679533MEMORY CELL WITH A BUFFER LAYER AND ITS FABRICATION PROCESSMay 2024January 2026Allow2021YesNo
18675405DISPLAY SUBSTRATE, MANUFACTURING METHOD THEREOF, AND DISPLAY DEVICEMay 2024April 2025Allow1010NoNo
18663458DISPLAY PANEL AND MANUFACTURE METHOD THEREOF, AND DISPLAY APPARATUSMay 2024March 2025Allow1010NoNo
18663124BONDING STRUCTURE AND METHOD THEREOFMay 2024February 2026Allow2101NoNo
18662437METHOD OF MANUFACTURING A SEMICONDUCTOR DEVICE AND A SEMICONDUCTOR DEVICEMay 2024August 2025Allow1510YesNo
18660956LATERAL BIPOLAR TRANSISTORSMay 2024April 2025Allow1110NoNo
18658471MANUFACTURING METHOD AND SEMICONDUCTOR DEVICEMay 2024April 2025Allow1210NoNo
18657968DOUBLE-SIDED INTEGRATED CIRCUIT MODULE HAVING AN EXPOSED SEMICONDUCTOR DIEMay 2024October 2025Allow1711YesNo
18655564ORGANIC ELECTROLUMINESCENT DEVICESMay 2024March 2026Allow2230YesNo
18654016BONDING TOOL AND BONDING METHOD THEREOFMay 2024June 2025Allow1301YesNo
18650172ABSORPTION ENHANCEMENT STRUCTURE TO INCREASE QUANTUM EFFICIENCY OF IMAGE SENSORApril 2024August 2025Allow1511YesNo
18649075METHOD OF MANUFACTURING A FIELD EFFECT TRANSISTOR USING CARBON NANOTUBES AND A FIELD EFFECT TRANSISTORApril 2024November 2025Allow1830NoNo
18647027GAN HEMT TRANSISTOR WITH IMPACT ENERGY RELEASE CAPABILITY FOR USE IN AEROSPACE IRRADIATION ENVIRONMENT AND PREPARATION METHOD THEREOFApril 2024January 2025Allow910NoNo
18643860IMAGE SENSOR DEVICE AND MANUFACTURING METHOD THEREOFApril 2024September 2025Allow1711NoNo
18641350IRRADIATION-RESISTANT GaN HEMT WITH DECOUPLING REVERSE CONDUCTION CAPABILITY AND FABRICATING METHOD THEREOFApril 2024December 2025Abandon2020YesNo
18640126METHODS AND STRUCTURES FOR CONTACTING SHIELD CONDUCTOR IN A SEMICONDUCTOR DEVICEApril 2024June 2025Allow1310NoNo
18638735MONOLITHICALLY INTEGRATED GAN-BASED HALF-BRIDGE CIRCUIT AND HALF-BRIDGE CIRCUITApril 2024June 2024Allow200NoNo
18634027SEMICONDUCTOR DEVICEApril 2024June 2025Allow1401NoNo
18631091SEMICONDUCTOR DEVICE AND FABRICATING METHOD THEREOFApril 2024April 2025Allow1220NoNo
18699821SEMICONDUCTOR DEVICEApril 2024August 2024Allow400NoNo
18627193TRANSPARENT DISPLAY PANEL AND TRANSPARENT DISPLAY DEVICE INCLUDING THE SAMEApril 2024April 2025Allow1210NoNo
18624167SEMICONDUCTOR DEVICE WITH CONTACT PLUGSApril 2024August 2025Allow1720YesNo
18622003SOLID-STATE IMAGING ELEMENT AND IMAGING APPARATUSMarch 2024February 2025Allow1110NoNo
18622142EMBEDDED SEMICONDUCTOR REGION FOR A LATCH-UP SUSCEPTIBILITY IMPROVEMENTMarch 2024March 2026Allow2340YesNo
18622615SELF-ALIGNED GATE ENDCAP (SAGE) ARCHITECTURES WITH VERTICAL SIDEWALLSMarch 2024October 2024Allow600NoNo
18619304METHOD AND SYSTEM FOR ETCH DEPTH CONTROL IN III-V SEMICONDUCTOR DEVICESMarch 2024April 2025Allow1310NoNo
18618158FIELD-EFFECT TRANSISTOR INCLUDING TRANSPARENT OXIDE AND LIGHT-SHIELDING MEMBER, AND DISPLAY UTILIZING THE TRANSISTORMarch 2024May 2025Allow1440YesNo
18615936NOVEL RESISTIVE RANDOM ACCESS MEMORY DEVICEMarch 2024April 2025Allow1310NoNo
18609645SEMICONDUCTOR DEVICEMarch 2024September 2024Allow600NoNo
18609778LATERALLY-GATED TRANSISTORS AND LATERAL SCHOTTKY DIODES WITH INTEGRATED LATERAL FIELD PLATE STRUCTURESMarch 2024January 2025Allow1010NoNo
18607571SEMICONDUCTOR PACKAGE AND MANUFACTURING METHOD OF SEMICONDUCTOR PACKAGEMarch 2024January 2025Allow1010NoNo
18608890MANUFACTURING METHOD OF SEMICONDUCTOR DEVICEMarch 2024December 2024Allow910NoNo
18605438SEMICONDUCTOR DEVICE INCLUDING TRENCH GATE STRUCTURE AND BURIED SHIELDING REGION AND METHOD OF MANUFACTURINGMarch 2024January 2025Allow1010NoNo
18603723POWER SEMICONDUCTOR DEVICE AND METHOD OF FABRICATING THE SAMEMarch 2024October 2024Allow700NoNo
18602185METHOD FOR FORMING A PACKAGE STRUCTUREMarch 2024October 2025Allow1911NoNo
18601068SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICEMarch 2024July 2025Allow1620NoNo
18601289DIAMOND-LIKE CARBON COATING FOR PASSIVE AND ACTIVE ELECTRONICSMarch 2024June 2025Allow1510NoNo
18599205SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICEMarch 2024March 2025Allow1210NoNo
18600031SEMICONDUCTOR DEVICE WITH FINE METAL LINES FOR BEOL STRUCTURE AND METHOD OF MANUFACTURING THE SAMEMarch 2024November 2024Allow800NoNo
18600348White Light LED with Rubidium Vapor Emission In Nested Enclosure Optimizing Human Vision and Horticultural Pigment IrradianceMarch 2024May 2024Allow300NoNo
18599051ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAMEMarch 2024January 2025Allow1010NoNo
18599167SYSTEMS AND METHODS FOR MULTI-COLOR LED PIXEL UNIT WITH HORIZONTAL LIGHT EMISSIONMarch 2024July 2025Abandon1600NoNo
18596731INTEGRATED CIRCUITS HAVING CROSS-COUPLE CONSTRUCTS AND SEMICONDUCTOR DEVICES INCLUDING INTEGRATED CIRCUITSMarch 2024September 2025Allow1830YesNo
18597172CHIP BONDING APPARATUS AND SECURING ASSEMBLY THEREFORMarch 2024May 2024Allow200NoNo
18595696SEMICONDUCTOR DEVICES HAVING VARIOUSLY-SHAPED SOURCE/DRAIN PATTERNSMarch 2024January 2026Allow2211NoNo
18596488ULTRA SMALL MOLDED MODULE INTEGRATED WITH DIE BY MODULE-ON-WAFER ASSEMBLYMarch 2024September 2025Allow1911YesNo
18594924SOLID-STATE IMAGING DEVICE AND ELECTRONIC APPARATUSMarch 2024February 2026Allow2410YesNo
18592933DISPLAY DEVICE HAVING AN OXIDE SEMICONDUCTOR TRANSISTORMarch 2024November 2025Allow2100NoNo
18591039VERTICAL GATE FIELD EFFECT TRANSISTORFebruary 2024July 2025Allow1701NoNo
18591803Epitaxial Structure And Transistor Including The SameFebruary 2024November 2024Allow810NoNo
18588783SEMICONDUCTOR DEVICE HAVING WORK FUNCTION METAL STACKFebruary 2024February 2025Allow1210NoNo
18588372SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING SEMICONDUCTOR DEVICESFebruary 2024November 2025Allow2020NoNo
18585574LIGHT BLOCKING LOUVER PANEL FOR AN LED LIGHT DISPLAYFebruary 2024January 2025Allow1110NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2891.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
131
Examiner Affirmed
94
(71.8%)
Examiner Reversed
37
(28.2%)
Reversal Percentile
28.2%
Lower than average

What This Means

With a 28.2% 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
593
Allowed After Appeal Filing
184
(31.0%)
Not Allowed After Appeal Filing
409
(69.0%)
Filing Benefit Percentile
43.9%
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, 31.0% 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 face challenges. Ensure your case has strong merit before committing to full Board review.

⚠ Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Art Unit 2891 - Prosecution Statistics Summary

Executive Summary

Art Unit 2891 is part of Group 2890 in Technology Center 2800. This art unit has examined 17,171 patent applications in our dataset, with an overall allowance rate of 79.4%. Applications typically reach final disposition in approximately 25 months.

Comparative Analysis

Art Unit 2891's allowance rate of 79.4% places it in the 59% percentile among all USPTO art units. This art unit has an above-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 2891 receive an average of 1.74 office actions before reaching final disposition (in the 37% percentile). The median prosecution time is 25 months (in the 80% percentile).

Strategic Considerations

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

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter 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.